To throw, as a musket, diagonally across the body, with the lock in front, the right hand grasping the small of the stock, and the barrel sloping upward and crossing the point of the left shoulder; as, to port arms.
1. A place intended for loading and unloading the cargo or passengers of vessels - it may be within a natural harbor on a coast, or on a river, or within sheltered water produced by artificial jetties. 2. A place where customs officers are stationed for the collection of duties and the control of imports and exports.
A small, circular window. To the left. The left side of a nautical vessel. The color defining port is red. For kitesurfing, this is left-hand-forward riding. Left-hand-forward kitesurfers do not have right of way over starboard riders or vessels. Right does not mean red, guys
The left side of the ship when facing forward, The original term was "larboard" . . . but the possibility of confusing shouted or indistinct orders to steer to larboard with steering to starboard at a crucial moment was both obvious and serious, The term was legally changed to 'port' in the British Navy in 1844, and in the American Navy in 1846, The word 'port' was taken from the fact that ships traditionally took on cargo over their left sides, i.e., the side of the vessel facing the port. This was probably a holdover from much earlier times when ships had Steering-boards over the right side aft; obviously, you couldn't maneuver such a vessel starboard side to the pier without crushing your steering oar. (See: Starboard,) A porthole.
The physical location on an audio or video bridge where a single caller is connected. In a sense, they’re like the ports used for ships: one ship in a port at a time; one caller at a time. Bridges are configured to accommodate a maximum number of calls, depending on the number of ports they are sold with. A bridge with 128 ports can handle up to 128 different callers. One with 1,280 can handle 1,280 callers and so forth. With newer software-based bridges being introduced using packet technology, the one-to-one relationship between calls and ports may blur.
left side of the ship facing forward; a harbor; an opening in the ship's side. The usual opening in the ship's side for light and air is also a port. The glass set in a brass frame that fits against it is called a port light.
i) A harbour, ii) a place of refuge, iii) a town or place possessing a harbour where ships load or unload, esp. one where customs officers are stationed, iv) the left-hand side of a ship. boat, or aircraft [turn to port (the helm)].
a sheltered harbor where marine terminal facilities are provided, consisting of piers or wharves at which ships berth/dock while loading or unloading cargo, transit sheds and other storage areas where ships may discharge incoming cargo, and warehouses where goods may be stored for longer periods while awaiting distribution or sailing. (Philippine Ports Authority)
A software-based "hole" for data transmissions going to or from a computer. There are exactly 65,536 ports, numbered sequentially from 0 to 65,535. Ports can either be open (communication allowed) or closed (communication not allowed). Every Internet application uses a certain port or set of ports to communicate. FTP server software, for example, usually communicates on port 21. However, to allow it to operate through a NAT box, a user must "map" port 21 to the computer running FTP server software. That way, the NAT box knows to automatically forward all requests on port 21 to the specified computer, which allows the software to function as it normally should. Even in situations without a NAT box, ports can be opened or closed for security reasons. This is most often accomplished thru the use of a firewall.
includes: (a) any harbour or haven, whether natural or artificial, or any estuary, channel, river, creek or roadstead, and (b) any navigable water in which vessels may lie for shelter or for the shipment or unshipment of goods or passengers.
A spot where the cruise ships dock?! Actually, no this is an order to move existing phone numbers from those one for one telephone lines to a PRI (see above) so that a client does not lose existing telephone numbers and still streamlines cost.
A transfer of software from one system or machine to another. Or, a sea farers haven. :-) Protocol The protocol is set of rules governing the exchange of data electronically between devices. The Internet uses several protocols such as HTTP and IMAP.
A place where ships and boats can load or unload or be sheltered from storms; a harbor. An opening in the side of a ship to let in light and air or for loading and unloading. The left side of a ship when facing the bow. An opening in a container.
A port is a facility for receiving ships and transferring cargo to and from them. They are usually situated at the edge of an ocean or sea, river, or lake. Ports often have cargo-handling equipment such as cranes (operated by stevedores) and forklifts for use in loading/unloading of ships, which may be provided by private interests or public bodies.
A sweet, fortified wine (originally from a particular region of Portugal), produce by the addition of brandy during active fermentation. The high alcohol content of the added brandy is enough to stifle the yeast's fermentation of sugar, leaving the wine strong and sweet.
A sweet, heavily fortified dessert wine, originating in the region of Oporto, in Portugal. It is usually made from non-muscat type red grapes. It is fortified at an early stage in order to retain the residual sugar, and then it is aged in wood. The period of maturation depends on the Port being produced.
Port is a superb, sweetish dessert wine, a fortified red wine, the name coming from Oporto on the Douro River in Portugal. Port is an after-dinner drink of quite high alcohol content (17 to 20 per cent). They have great keeping qualities thanks to added brandy and high natural sugar content. There are 2 main types of port wines: tawny ports are blended wines that have usually been kept by the maker in wood barrels for some years in order to mature them for drinking when sold; vintage ports (which bear a year of origin on the label) are usually sold early by the maker and the consumer does the cellaring until the wine is ready for drinking
A fortified wine. Tawny ports are ready to drink when sold, they don't mature in the bottle. Vintage ports will mature in the bottle, and are made to be kept by the buyer, who then must decide when it's ready to drink. Very tricky stuff.
A fortified sweet wine from the Duoro Valley of Portugal. It is a blended wine made up of five grapes: Tinta Barroca, Tinta Roriz, Tinto Cao, Touriga Francesa, Touriga Nacional. Ports are divided into two categories: wood-aged ports and bottle-aged ports. The best known style of wood-aged port is Tawny Port which is ready to drink immediately after bottling. The best known style of bottle-aged port is Vintage Port which should be decanted.
sweet heavy red wine fortified with brandy, most frequently imbibed by Regency gentlemen at dinner parties after the ladies had withdrawn to the drawing room for tea. Port gets its name from the country of Portugal. England had sworn off French wine during the war years, and instead began importing wine from this allied country instead.
A fortified wine of Portugal, also known as Oporto. Very richly flavoured and sweet. There are a number of different styles: tawny - aged in wooden barrels, rather than the bottle, the age (10 years etc.) refers to the average age of the wine in the barrel: colheita - refers to a port of a single vintage that has been aged in wooden barrels: vintage- port of a specific year that is aged in the bottle; late bottled - aged in the barrel but not for as long as a tawny port; ruby - about three years old, sweet and ruby red coloured, usually fruity and ready to drink.
1. n. a wine fortified with brandy, traditionally from Portugal; 2. n. a harbor where people dock their boats and drink port; 3. v. to trans port, or otherwise translate and/or modify a computer program or Director Projector from one platform to another, as in, "Who is going to port this mess to Windows?"; 4. n. a program which has been translated to operate on another platform, as in "Who messed up the Windows port? I need a glass of port".
A vin doux naturel, or a wine that is fortified during fermentation. Some residual sweetness remains because the yeast has not yet depleted all of the natural sugars in the must. Six major grape varieties are grown throughout Portugal's Douro valley in steep, rocky hillside vineyards. After fortification, wines are classified either into bottle or wood-aged ports. Bottle aged ports include ruby and vintage, the most expensive. Wood aged ports are further aged before release in barrels, and thus are further developed, or oxidized, by the time they are bottled. Tawny and late-bottled vintage ports are in this category. A glass of port is a nice way to round down an evening. Serve 1 ounce in a port glass or in a very small white wine glass with blue-veined cheeses, bittersweet chocolate, or cigars. Vintage ports require decanting off of their sediment and spoil within 48 hours of opening. If you are just starting out, try $12 ruby port and compare it with the sweeter tawny version. These bottles will remain fresh for months
A fortified wine from the Douro region of Portugal. Styles of Port include Late Bottle (LB), Tawny Ruby, Aged, and Vintage. Mostly sweet and red, Port is usually served after dinner as a dessert wine. All Port is made by Port houses in Vila Nova de Gaia, on the southern bank of the Douro across from Portugal's second largest city, Oporto. Until recently, most Port houses were British-owned.
Port or Porto is fortified wine from the Douro region of Portugal. While the term Port is used as a generic term to describe all port-type wines, only wines produced in Portugal may use the Porto appellation.
Networked applications communicate among themselves via a combination of IP address and port number and specify the service to be called up on each target computer. Port 80, for instance, is normally used for HTTP and Ports 20 and 21 for FTP. A firewall can control data exchange of individual ports.
An interface that allows you to plug in an external device. Serial ports are male (have pins), while parallel ports are female (have holes). Newer Universal Serial Bus (USB) ports transfer data much faster, and can connect more devices, than serial and parallel ports.
A connection or socket on a computer. Ports are used for connecting devices, such as modems, monitors, and printers to your computer. Ports are used to send information between computer and devices.COM (serial ports) and LPT (parallel ports) are the most commonly used ports.
Although your computer has a physical port in the back into which you plug things, TCP/IP ports are also values defined in the protocol. For example, most computers which accept Telnet sessions create a port "23" to accept Telnet transmissions. When a packet comes in with the Telnet request, it carries a request for port 23. Each application has a unique port number associated with it. See also Transmission Control Protocol. WWWebfx Home Page
A port is an endpoint to a logical connection in a communication system, such as UDP and TCP/IP networks. The port number identifies what type of port it is. For example, port 6000 is the location for the listener socket to "listen" on the kernel server.
A fixture that allows for the transfer of data between computer components through a conduit, when one of the components is located outside of the computer case. It is usually a place for a cable of some sort to be attached.
A connection on the back of a computer to which are attached various peripherals. The two primary ports are the serial port and the printer port, although the keyboard and monitor connections can also be called ports.
Is the physical interface or connection point between different elements of a system. I.e. one extension port on the Central Control Unit (CCU), will connect one extension to the system. There are ports on the CCU for other types of connection interface, including telephone line s and computers. Optipoint system phones can also have ports for connection to headsets etc.
A location on a server from which content streams to a client. A port is represented by a number that is part of a URL. Windows Media server components, when in use, bind to ports. By default, the Windows Media Unicast service binds to port 1755 and the Windows Media Station service binds to port 7007. If HTTP streaming is enabled for a service, then that service switches to use port 80, which is the preferred port for any HTTP streaming. You can change the ports that any of the Windows Media server components use by editing the registry.
A point at which an external device connects to the SGI Media Server. Video ports, used by video input and output devices. MFCODE C video ports are named MFCODEC_n (for example, MFCODEC_2). The term media port refers to either a video or a deck control port.
A logical connection "channel" for network applications to talk to each other. Ports help applications know what traffic is destined for them rather than other applications on the same host. Certain applications communicate at certain ports. For example a typical e-mail client sends mail to the server on port 25, and checks for new mail on port 110. Your web browser requested this web page on port 80. There are 65,536 ports for the TCP protocol, and 65,536 for the UDP protocol.
Port can mean two things: To transfer or translate data or program files from one computer platform to another, such as from a PC to a Macintosh. Software programs usually have to be rewritten to be successfully ported. A connector on a computer to which peripheral devices, such as a printer or modem, are attached. Typically, these are serial ports, parallel ports, and modem ports.
(1) A portal through which an open application can exchange information with another open application using the PPC Toolbox. A port is designated by a port name and a location name. An application can open as many ports as it requires so long as each port name is unique within a particular computer. (2) A connection between the CPU and main memory or a device (such as a terminal) for transferring data. (3) A socket on the back panel of a computer where you plug in a cable for connection to a network or a peripheral device.
A communication endpoint of various IP based protocols, notably TCP and UDP. A server program waits for connections ("listens") on a port, and a client program connects to this port. IANA (the Internet Assigned Numbers Authority) maintains a list of port numbers registered for certain purposes.
Communication port. Internet communications software provides many different (virtual) entry and exit ports to channel information between the user's PC and the Internet. By convention certain well known ports are used for certain types of traffic. This allows the communications software to segregate and multiplex different types of traffic across the same physical connection. For example, the Internet connection can be used to transfer email at the same time as the user is browsing web pages. Firewalls are used to monitor the ports and close unwanted ones. However, some stealthy P2P software and viruses can bypass simple firewalls by finding and misusing any open ports.
1. A connection to a computer to enable other devices, such as printers, modems, monitors, keyboards, mice, etc. to interface with the computer. 2. A logical connection to a network. Different port numbers are used for different purposes, for example, HTTP usually uses port 80. See List of Common Port Numbers
A connection point on a computer that is used for connecting peripherals, e.g. serial (COM) port and parallel (LPT/printer) port. Or a virtual connection point (a memory allocation) to run certain applications in a server, e.g. FTP (port 21), SMTP (port 25), and HTTP (port 80).
Because most network interfaces have only one or two physical ports (the means by which data comes into the computer from outside), you need to designate port numbers for different kinds of IP traffic. For example, port 80 is commonly used for HTTP traffic and port 21 is used for FTP. Fibre Channel ports come in a number of flavours depending on the topology of the Fibre Channel. N_Ports are simple equipment node ports in a point-to-point connection topology. NL_Ports are node ports connected to an Arbitrated loop. F_Ports are point-to-point ports connected to a fabric. Generally this means that the F_Port is a port on a switch. FL_Ports are ports connecting from one loop to a switch and thus to a fabric. E_Ports are expansion ports used to interconnect switches together. G_Ports are classified by some switch companies as ports that can be either E_Ports or F_Ports depending on usage.
Communication with servers take place through ports, which usually have unique numerical addresses. These numbers may be changed by a system-administrator, but generally they do not need to be specified or tampered with. Here is a list of typical web-related ports. Service Port
An interface on a computer for connecting peripherals or devices to the computer. A printer port, for example, is an interface that is designed to have a printer connected to it. Ports can be defined by specific hardware (such as a keyboard port) or through software.
A channel in or out of your computer. Some ports are associated with standard network protocols; for example, HTTP (Hypertext Transfer Protocol) is traditionally addressed to port 80. Port numbers range from 1 to 65535.
1. Interface on an internetworking device (such as a router). 2. In IP terminology, an upper-layer process that is receiving information from lower layers. 3. To rewrite software or microcode so that it will run on a different hardware platform or in a different software environment than that for which it was originally designed. 4. A female plug on a patch panel which accepts the same size plug as an RJ45 jack. Patch cords are used in these ports to cross connect computers wired to the patch panel. It is this cross connection which allows the LAN to function. 4. A female plug on a patch panel which accepts the same size plug as an RJ45 jack. Patch cords are used in these ports to cross connect computers wired to the patch panel. It is this cross connection which allows the LAN to function.
1) The termination of the Path at the Roles .It is used to indicate carnality of roles in Role Models and the Contracts it supports. 2) An Object Class of the Connection Graph Fragment of TINA Network Resource Information Model that models a source or a sink of information flows. It is a non-instantiable Object Class ; its instantiable subclasses are logical Port and physical Port. 3) In a Role the indication that the role has reference to the role in the far end. Expresses possibility for communication between connected roles. source: EU-P103 - PIR2.3,ST3.4.1 domain: Information Model usage: EU-P103
point to which a server can be bound and clients can connect, usually in the range 0-32767 but sometimes higher depending on the operating system. Ports less than 1024 are reserved and can only be bound by the super-user in UNIX (the same is not true in Winsock as there is, in my opinion, no real concept of users)
In hardware, a port is an Input/Output adapter used to connect a device to an Input/Output bus, network or a peripheral. In software, a port is a memory address that identifies the physical circuit used to transfer information between a microprocessor and a peripheral.
Most generally, a physical connection through which information goes into and/or out of a computer. On the Internet, "port" can also refer to a number that is part of a URL. Every service on an Internet server "listens" on a particular port number on that server. Most Web servers, for example, listen on port 80. Services can also listen on non-standard ports, in which case the port number must be specified in the URL address. Finally, to "port" a piece of software is to translate it from one type of computer system to another.
A conduit for trasferring information between a computer and an external devide. Examples of these found on most computers are USB ports and serial ports. Some items that can be plugged into these include scanners, printers, joysticks modems and digital cameras.
The TCP/IP numeric identifier that a program or service seeks so it can communicate with a computer in a networked environment. Programs are assigned different port numbers so the computer knows what to do when it accesses that port number.
The mechanism used by TCP and UDP to associate data with an application. Typically, an application server will listen to a well known port for clients; the client normally uses a 'randomly' selected port to transmit and receive data on.
When referred to in networking terms, the port refers to a virtual location on your computer's network interface where a server is running, ready to respond to requests that come to it. For example, you can have 4 different web sites hosted on your one computer just by having each one use a different port number. By default, when you browse to a website, you are connecting to port 80 on the server, but the browser does not show you this. When you specify a different port, you append a colon and the port number to the end of the URL like this example that specifies port 83 -- http://mycomputer.com:83
The connection point of a device such as a host or switch to a bus or network. Incipient NSP ports are represented with a worldwide name (WWN) and can be virtual connection points. Fibre Channel switch ports have many different logical operating modes, such as N_Port, F_Port, E_Port.
The point of access into a switch, system or network; the interface through which communications occur. Each port has a specific configuration, defined by system software attributes and the values of these attributes.
A logical channel in a communications system. Each server program, for example, has a unique port number associated with it, defined in the Network Information Service "services" database. HTTP defaults to port 80. HTTPS defaults to port 443. FTP defaults to port 25.
A point of access into a computer, a network, or other electronic device; the physical or electrical interface through which one gains access; the interface between a process and a communications or transmission facility.
A port, in terms of TCP/IP, is a 16-bit number (the allowed range being 1 through 65535) used by the protocols of the transport layer - the TCP and UDP protocols. Ports are used to address applications. In other words, when a packet is received by the computer, the operating system uses port information to determine which application will receive the data within the packet.
A number that identifies a particular Internet application. When your computer sends a packet to another computer, that packet contains information about what protocol it's using, and what application it's trying to communicate with. The "port number" identifies the application. For example, the Orbis port from the Multi-Protocol Gateway (MPG) is 06520, so if you were to telnet to the MPG without including a port number in the address (umpg.cis.yale.edu), you would get the MPG screen. If, however, you were to attach the appropriate port number to the telnet address (umpg.cis.yale.edu 06520), you would go directly to Orbis, bypassing the MPG screen.
computers use a series of numbered 'ports' to communicate with each other. Different services (email, ftp, etc) use different ports. Some worms expoloit weakness in system to spread directly from computer to computer.
A numeric identifier for an Internet service used to distinguish between different services offered by hosts. Web servers, for example, use port 80 by default. Network ports are unrelated to hardware ports, such as printer ports on PCs.
A 16-bit identifier used to distinguish between different applications using the same transport protocol on the same network node. When sending data from one application to another, the port number of the destination must be known. Some port numbers are standardized for specific applications. For example, TCP port 80 is typically used for HTTP (web) server s. Port numbers are also important when using firewalls, as firewalls may restrict traffic based on the port number. Note that TCP port numbers are completely independent from UDP port numbers. That is TCP port 8080 is not the same as UDP port 8080, and each can be used separately. Note that MTP uses UDP port numbers.
The term for entry and exit methods of a computer. There are both physical and non-physical ports. An example of a non-physical port would be the port used to download webpages off the Internet (port 80). Non-physical ports can be blocked by a firewall.
A TCP/IP logical channel. Since every application on a host listens to a different port, the ports are used to funnel messages to the correct application. The p4d server program listens on the port assigned by P4PORT.
"Port" is used to describe more than one thing on the Internet, but the most common use of the word you'll probably encounter is this: the plugs on the back of your computer where you connect peripherals such as printers or modems.
Ports can be classified as hardware ports or network (software) ports. Hardware ports consist of the outlets on the computer where cables or plugs connect. Examples include USB, SCSI and Ethernet ports. Network ports act as numbered addresses for communicating with other systems or programs. Network ports communicate by attaching port numbers to data they send. Examples of network ports include HTTP, SMTP and telnet.
Plug-like connectors on the back of a PC's case that let the machine communicate with peripheral devices such as mice and printers. Serial ports transmit data one bit at a time; parallel ports transmit data eight bits line. It's like a modem for an ISDN communications (one byte) at a time.
An entry / exit boundary mechanism that governs and synchronizes the flow of data into and out of the central processing unit (CPU) from and to external devices such as printer and a modems. Synonymous with interface.
An internet port is a number that indicates what kind of protocol a server on the Internet is using. For example, Web servers typically are listed on port 80. Web browsers use this port by default when accessing Web pages. FTP uses port 21, e-mail uses port 25, etc.
1. A specific Internet "channel" to listen to. Some ports are common to one role (e.g. port 80 for web services) In a URL, the port follows the domain name separated by a colon (:) Internet services/daemons listen to a particular port. Most services have standard port numbers and receive requests from clients when a string of data arrives at a given port. 2. Port refers to the translation of one application from one language/platform to another language or platform. 3. A place where information moves from of a computer to another device (a keyboard or network connection).
A connector on your computer that lets you connect a device, such as a monitor, disk drive, mouse, printer, or keyboard. Some common types of ports are: serial for connecting a modem or mouse; parallel port for connecting a printer, scanner, digital camera, ZIP drive, or other device; SCSI for connecting any device made for a SCSI port (all Macs come with a SCSI port); and USB for connecting a scanner, digital camera, printer or any device made for a USB port (most newer PCs and Macs have a USB port).
(1) As applied to services running on a computer, a number assigned to a process on a computer so that the process can be found by TCP/IP. Also called a port address or port number. (2) Another name for an I/O address. See also I/O address. (3) A physical connector, usually at the back of a computer, that allows a cable from a peripheral device, such as a printer, mouse, or modem, to be attached.
An endpoint for communication between devices, generally referring to a logical connection. A 16-bit number identifying a particular Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) resource within a given TCP/IP node.
net or bus within a given schematic that is declared as a port becomes part of the schematic's electrical interface. Explicit connections may be made to ports when the schematic is added as a use at the next higher level of hierarchy.
Try to think a port as a door. And each door a deferent messenger goes into. For example: A browser uses the HTTP port. Our message (a browser) goes through this door to get its information. Common ports are: HTTP:80 FTP:21 Telnet:23 SMTP:20 POP3:110
Services on a host computer which is connected to the internet must "listen" on a particular port number on that server. For example, Web servers typically listen on port 80. Services can also listen on non-standard ports: if this is the case then the port number is part of the actual URL when accessing the server.
in a network, a communications endpoint that can be either a number (the port number) or a name. The Application Server listens for requests on the port that is specified in the PORT= parameter of the PROC APPSRV statement. If a name is supplied, then the Application Server looks up that name in the system network services file (/etc/services on UNIX) and maps the name to a port number.
A number that is used to direct traffic to a particular entity on a TCP/IP host. Servers listen on a specific port number, and the TCP/IP protocol stack on the host delivers traffic to each server based on this number.
A connection between the CPU and another device that provides a means for information to enter or leave the computer. I/O ports are used to send or read data from locations other than Random Access Memory (RAM) or Read Only Memory (ROM). In computers which use Intel microprocessors, there are memory addresses and port addresses. Ports are used by the microprocessor to control other ICs (such as sound chips, graphics controllers, DMA chips), or to send or read data to/from disk drives, printers, modems, the keyboard, CD-ROM interface card, or other devices. (7/96)
A connection or socket on the motherboard or controller card. A motherboard may have one or two ports (primary and secondary). If your motherboard has only one port, you may need to add a controller card to create a secondary port.
A port in Internet context means a service provided by a machine connected to the network. Each machine can offer multiple services. Like an appartment number within a building a port within a server is designated by a number, too. And like an appartment can alternatively be referred to by the name of its inhabitant(s) a port also has a name attached to it. 'HTTP' (web service) corresponds to port #80, 'SMTP' (email transfer) to port #25, 'IMAP4' (email retrieval) to port #143, and so on. Daemons listen on these ports and provide the respective service once contacted.
All nodes have one or more ports. A port in this discussion is a physical interface between the TNC and a radio such as a cable connection. A typical TNC will have at least one radio port and one cable port usually an RS-232 connection to a computer running some type of communications software.
A port is a 16-bit number (the allowed range being 1 through 65535) used by TCP and UDP protocols for identification of applications (services) on a particular computer. Several applications may run at once (e.g. WWW server, e-mail client, WWW client - browser, FTP client, etc.). Each application is uniquely determined by its port number. Ports 1 through 65535 are reserved for standard or system use (e.g 80 = WWW). Ports above 1024 (inclusive) may be used by any application (typically as a source port by a client or by a non-standard server application).
the TCP port number identifies a process or application inside the computer. Any application or process that uses TCP for its transport is assigned a unique identification number called a TCP port. These ports are numbered beginning with zero. Port numbers for client applications are dynamically assigned by the operating system when there is a request for service. Port numbers for server applications are preassigned by the IANA (Internet Assigned Numbers Authority) and do not change. A server application or process that uses TCP as a transport has at least one preassigned port number. For example, the preassigned port numbers for FTP server services are 20 (data) and 21 (control).
A Port is part of the PC that is used for passing data in and out of a computing device. This is normally located on the back of the PC. The port can be a Serial Port - data is sent/received one bit at a time through a cable containing a single wire, or a Parallel port where the data is sent/received through a cable containing several pieces of wire so that more than one bit at a time can be processed. Also referred to as the I/O Port.
A physical connection on a computer or network device, usually in the form of a socket, which allows data to be received from, and transmitted to, an external device. In library systems, the number of ports available for log on determines the number of users who can access a system simultaneously. Most libraries reserve a fixed number of ports for local use and designate the remaining for remote access.
A physical connection through which data is transferred between a computer and other devices (such as a monitor, modem, or printer), a network, or another computer. Also, a software channel for network communications.
A point at which an external device connects to Video Server Toolkit. Video Server Toolkit defines the following types of ports: Video ports, used by video input and output devices. DIVO video ports are named DIVO_n (for example, DIVO_2), the O2 workstation video port is named mvp, and Vela decoder ports are named vela_n (for example, vela_2). Deck control ports, which are used by V-LAN transmitters. Deck control ports are named vlan_"n" (for example, vlan_0). The term media port refers to either a video or a deck control port.
When a server receives information from the Internet, it uses the port number to determine which running server software should receive the information. Ports can be numbered from 1 to 64000. Some ports are used for commonly used services. For example, most web servers "listen" to port 80 for web page requests, and FTP servers "listen" to port 21.
Port can mean one of a few things: 1. A physical port allowing for a wire connection or a plug, like a serial port. 2. Every network node has ports, which are just numbers from around 1 to 99999. Ports are just used to access different programs that may be running on the same address. Every server daemon operates on a port, like a MUD, a UNIX login (default port 23), a web server (default port 80), or an IRC server (default port 6667). Some daemons automatically connect you to the right port, that's why you may not notice it all the time. Just telnetting to a server probably leads you to port 23. Accessing an HTTP server usually automatically sends you to port 80. 3. A version of a program that is made to run on another operating system, like a port of Pine (a UNIX email program) to Windows.
Used with the TCP/IP networking protocol, this is a networking reference number which associates network packets (information sent over the network) with services or application programs. The port number indicators which program running on a receiving computer will process the information received.
Each internet address has multiple ports which it can connect to the internet through. These are numbered and there are standard numbers to use for web access (80), for e-mail (25), for news (119) etc. By default WebMask uses port 8080 for the browser to connect to it - ports can be used for two programs on the same machine to talk to each other.
A mechanism that allows multiple sessions. A refinement to an IP address. In Device Manager, a connection point on a computer where devices that pass data in and out of a computer can be connected. For example, a printer is typically connected to a parallel port (also known as an LPT port), and a modem is typically connected to a serial port (also known as a COM port).
In TCP/IP and UDP networks, an endpoint to a logical connection. The port number identifies what type of port it is. For example, port 80 is used for HTTP traffic. Also see Well-Known TCP Port Numbers in the Quick Reference section of Webopedia..
The frame relay port is the interface point where the local loop meets the frame relay network. It can be literally mapped to a synchronous interface module and port on a particular frame relay switch. The frame relay port represents the maximum speed which data can enter (ingress point) or leave (egress point) a frame relay network. This maximum speed is often referred to as the maximum information rate (MIR) in carrier service level agreements. This is the maximum rate that data can burst to a virtual circuit.
An outlet or connection location on a computer which allows a peripheral device to operate. A communications port (COM port) allows the modem to operate, and a local port (LPT) enables the printer to operate.
Another ambiguous word from the computer industry. Ports are the plugs on the back of your computer where you connect peripherals such as printers or modems. Port is also the verb that means modifying a piece of software so it will run on another platform. (Windows software, for instance, might be ported to the Mac platform or vice-versa). An Internet port, however, is a part of a server that handles certain kinds of requests. If you've ever seen a number appended to the end of a URL, followed by a colon, that's the port number. Internet servers often provide a variety of services, such as FTP, WWW, or Gopher. Each of those services "listens" for outside contact on a particular port number, which is standard for that given type of service. Web servers, for instance, usually listen on port 80.
Applications on a computer communicate on the net through an assigned port number. The default port for P2P is 6346, thus a P2P program is described as "listening" on port 6346. Since this is a user-defined setting, this can be changed to any available port number without causing any communication problems or conflicts.
A term for a kind of 'virtual destination' over the Internet Protocol. Every computer connected to the Internet has numbered ports from 0 to 65535, and certain types of data are typically sent to specific ports. E-Mail uses 25 and 110, Web Browsing 80, and so on.
A connection or link between two devices that allows information to travel to a desired location. The process of enabling one software platform to use software or applications that are used on another software platform.
A number representing the kind of level at which two devices communicate; the level must be the same for both devices for communication to occur. For example, Web servers and browsers communicate using HTTP, which runs on port 80. In Personal Web Sharing, the port is the address of the Web folder on your computer.
Most generally a port is a place where information flows in or out of a computer e.g. a com port where a modem is attached. A port can also refer to an Internet port specified in an URL e.g. gopher://blah.blah.com/:7000, meaning a gopher server at blah.blah.com listening on port 7000. See Also: Domain Name , Server , URL
A port is a number in one of the fields of a TCP packet. It is used by the recipient of the packet to determine which program (if any) to pass it to. Usually, the software that makes this determination is the operating system of the server computer (or, on some Unix machines, a program named inetd). This computer is typically running several programs simultaneously, each providing some service to other programs or to other computers on the network. Examples of these services include e-mail, name service (DNS), web service, database management, and many more. Each of these services communicates with its clients by means of a specialized protocol. For the purposes of Wifi management, the relevant ports and protocols are
A hardware- or software-based interface used to transfer information between a computer and other devices. Hardware ports are physical connections that are visible on the outside of the computer. Software ports are the numbered gateways in programs that software programs use to exchange information.
(1) A system or network access point for data entry or exit. (2) A connector on a device to which cables for other devices such as display stations and printers are attached. (3) The representation of a physical connection to the link hardware. A port is sometimes referred to as an adapter; however, there can be more than one port on an adapter. One or more ports are controlled by a single data link control (DLC) process. (4) In the Internet suite of protocols, a specific logical connector between the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP) and a higher level protocol or application. (5) To modify a computer program to enable it to run on a different platform.
The physical connection of an expression in an instantiating (parent) module with an expression in an instantiated (child) module. A port of an instantiated module has two nets, the upper connection, which is a net in the instantiating module, and the lower connection, which is a net in the instantiated module.
An interface on a computer where you can install/connect a device. Personal computers have various types of ports. Internally, there are several ports for connecting disk drives, display screens, and keyboards. Externally, personal computers have ports for connecting modems, printers, mice, and other peripheral devices.
Port has a number of different meanings in the world of computing. A hardware port is the exact spot on a computer that is used to connect individual devices to it. The modem port is for the modem; the mouse port handles the mouse; the RS-232 port is where you plug in your RS232 thingy, etc. The act of "porting" a piece of software means engineering it to run on a platform other the one for which it was created. A server port is the specific designation of a communication channel used by the server to ensure a secure data transfer to or from a client. Port also happens to be the type of red wine that system administrators often swig while configuring data ports.
An Internet port refers to a number that is part of a URL, appearing after a colon (:), directly following the domain name. Every service on an Internet server listens on a particular port number on that server. Most services have standard port numbers, for example, Web servers normally listen on port 80.
(1) A pathway into and out of the computer. The serial and parallel ports on a personal computer are external sockets for plugging in communications lines, modems and printers. On a front end processor, serial ports connect to communications lines and modems. See serial port, parallel port and PC input/output. (2) To convert software to run in a different computer environment.
Port describes the place where data enters and exits a computer. For example a communication port (serial, parallel) on a personal computer where your modem or printer connects. Port also describes the process of converting an application (software program) for use on one system to a dissimilar computer system. For example, Netscape has been "ported" to run on Windows, Macintosh and UNIX computers.
In TCP/IP, a Port is part of an address. Each node on the Internet can be identified by its IP address. Using TCP or UDP, a node can offer 65536 ports for each of these protocols on each IP address, and assign ports to services or a client applications. A TCP or UDP packet contains both origin and destination addresses including the ports, so the operating system can therefore identify the application or service as its receiver.
16-bit number ( 1-65535) used by TCP and UDP for application (services) identification on a given computer. More than one application can be run at a host simultaneously (e.g. WWW server, mail client, FTP client, etc.). Each application is identified by a port number. Ports 1-1023 are reserved and used by well known services (e.g. 80 = WWW). Ports above 1023 can be freely used by any application.
A port is a connection through which a separate device (such as a printer, plotter, or graphics terminal) may communicate with the computer. For more information, see "Connecting a Graphics Device to the Computer" in Appendix C, Graphics.
It's a number associated to a specified service. Every service on an Internet server "listens" on a particular port number on that server, for example, web servers normally listen on port 80 and FTP servers listen on port 21.
A port is an interface on a computer to which you can connect a device. Modern computers have a number of port types, such as serial, parallel and USB ports. Internally, there are several ports for connecting disk drives, display screens, and keyboards. Externally, there are ports for connecting modems, printers, mice, and other peripheral devices.
point of entry / exit for a data stream, either at the back of a computer, or (in the network sense), for wiring from a desktop's IP address to a hub in an IDF closet; each hub generally serves 12 or 24 ports. Activating another IP address in a local network may be as simple as throwing a switch (if a port is free) or as complex as buying and hooking-up a whole new hub if no ports are left.
Logical channel or channel endpoint in a communications system. Each application programme has a port number of its own associated with it. Some protocols, e.g. telnet and HTTP, have default ports specified but can use other ports as well (the SPiN Chat System by default uses Port 8000).
The subtanceous dongle at the end of the tube connected to the band. This is where the surgeon will inject fluid in order to increase pressure on the band. Many people can feel their ports under the skin&especially as they lose weight. The area around the port is often tender for several weeks post-op and can become sore if the surrounding muscle is stretched or worked too vigorously.
A port is the address of a socket on an Internet server. In addition to the server address, each socket also needs a port number. The port number is added to the end of the server address to create a full address. For example, www.locked.com:80 is a full Internet address that specifies a port number of 80.
Where you plug something into your computer. Each port is connected to a particular part inside your computer. There's a great deal about ports that I don't know or understand. A Universal Serial Bus (USB) port is a little slot instead of a lot of pins or holes for pins to go into. The places where you plug speakers and microphones are tiny little holes like the ones in a portable wireless. They're in the back of your sound card. I suppose they're called ports, but I'm not sure. It's not a bad idea to use black texta to label ports before you unplug things. There's almost always only one port into which a particular device can be plugged, but that doesn't mean that it's easy to see at a glance.
The plug in the back of your computer where you can attach a modem, a printer, a mouse, or other peripherals. Port also refers to a number that identifies a particular Internet service (for instance, Port 6667 usually means an IRC server). Most common Internet features - such as Gopher - have "standard port numbers" (for example, 70 for Gopher) that client software uses if you do not specify a different port number. The only time you need to know about ports is when a server requires that you use a nonstandard port number to communicate.
A connection that allows data to be transferred between an input/output device and the processor. Internet servers use ports to differentiate the multiple processes that occur at the same time. Ports may also be dedicated solely to input or to output.
A port is a 16-bit number (the allowed range being 1 through 65535) used by the TCP and UDP protocols at the transport layer. Ports are used to address applications (services) that run on a computer. If there was only a single network application running on the computer, there would be no need for port numbers and the IP address only would suffice for addressing services. However, several applications may run at once on a particular computer and we need to differentiate among them. This is what port numbers are used for. Thus, a port number may be seen as an address of an application within the computer.
Computers assign a number to each connection they have with another computer in order to keep track of simultaneous connections. These are called port numbers, or ports for short. Most servers listen for requests for FTP or SFTP connections on a standard port, but sometimes servers offer or require the ability to connect to them on a different port. You can tell Fetch can make FTP or SFTP connections to non-standard ports, but most of the time you do not need to.
Although this sounds like an area where ships dock, a port is actually a socket on the back or front of your computer system that allows you to connect other devices to your computer, such as your mouse, keyboard, printers, and scanners.
A plug and its associated circuitry in a computer's hardware use for sending data from computer to its peripherals or to other computers. Serial, parallel, and SCSI ports are the names of commonly used ports. Source: Microsoft's New Computer Users Glossary
A connection for the direct exchange of data between two or more devices. On a network the source and destination ports are stored as special numbers (between 0 and 65535) in the header of a packet that utilizes TCP or other protocols. These numbers direct incoming data to different computer processes. Ports are vulnerable to exploits, which is why firewalls are used to stop infiltrating port scans.
A hole in the back of your computer for cable connectors. Ports allow external devices like your printer, mouse, monitor (screen), or zip drives, modems, scanners, etc to be connected to a computer. These can sometimes be connected to each other in a daisy-chain too, using USB see webopedia for more.
An output connection on a computer to which peripheral devices are attached. Typical types of port are parallel and series. Parallel ports have a faster data transfer rate and are used for devices such as printers. Serial ports have a slower data transfer rate and are used for devices such as keyboard, mouse and joystick.
An end point for communication between applications, generally referring to a logical connection. A port provides queues for sending and receiving data. Each port has a port number for identification. When the port number is combined with an Internet address, it is called a socket address.
A socket from where data can enter and leave a computer, or a networking device. On a personal computer, the serial (console) and parallel ports are for plugging in communications lines to equipment such as modems, routers and printers. Also see Internetwork Modem Router
Each piece of software on a server (for example, FTP, email, Web, etc) is assigned a port number (e.g. telnet is assigned port number 23). Generally, the port number is not required when accessing a Web page.
The jack into which an end user connects a PC to access the Internet. In the case of an Aironet access point, the port is a virtual jack. BBSM Hotspot allows the administrator to configure the page set and start page on a per-port basis.
An address in memory used to transfer data into and out of a system. TCP/IP needs a port number to be able to provide the communication connection. RemoteScope allows configuring the Port number between 10000~50000.
In TCP/IP a 16-bit number used to communicate between TCP and a higher-level protocol or application. Some protocols, such as the File Transfer Protocol (FTP) and the Simple Mail Transfer Protocol (SMTP) use the same port number in all TCP/IP implementations.
A hardware location for passing data in and out of a computing device. Personal computers have various types of ports, including internal ports for connecting disk drives, monitors, and keyboards, as well as external ports, for connecting modems, printers, mice, and other peripherals. In TCP/IP and UDP networks, "port" is also the name of an endpoint to a logical connection. Port numbers identify types of ports. For example, both TCP and UDP use port 80 to transport HTTP data. A threat might attempt to enter using a particular TCP/IP port.
Generally, port refers to the hardware through which computer data is transmitted; the plugs on the back of your computer are ports. On the Internet, port often refers to a particular application. For instance, you might telnet to a particular port on a particular host. The port is actually an application.
a) an action describing that a software package/application was also coded to work under a different operating system b) On networks you can talk to many different other hosts. To distinguish the transmissions from one to another, ports are used. There are 65,536 possible ports on your computer. The first 1024 are reserved for network services, such as FTP, HTTP, and so forth.
A connector on a computer that can be used to communicate with a peripheral, another computer, or a network. Common ports are serial, parallel, SCSI, USB, PS/2, and FireWire, defined by the shape of their connector, and the protocol used to communicate. 'Port' can also be used as a verb, which means to recompile code so a program will run on a different platform.
One of the network input/output channels of a computer running TCP/IP. In the World Wide Web, port usually refers to the port number a server is running on. A single computer can have many Web servers running on it, but only one server can be running on each port. The default port for World Wide Web servers is 80.
1. A segment of your Internet/Network connection. Think of your Internet connection as divided into thousands of wires. Each wire is for a different purpose. This allows simultaneous transmit (like downloading a file and talking on an instant messenger). For example, port 80 is for HTTP.; 2. An interface on a computer to which you can connect a device. Internally, there are several ports for connecting disk drives, display screens, and keyboards. Externally, there are ports for connecting modems, printers, mice, and other peripheral devices.
In TCP/IP and UDP networks, an endpoint to a logical connection. The port number identifies what type of port it is and what kind of data traffic will be permitted through. For example, port 80 is typically used for HTTP traffic.
A port is merely some form of electrical connector on a computer or other piece of electronics to enable it to be connected to some peripheral device. MIDI IN, OUT, and THRU sockets are all examples of ports. The alternative term interface is sometimes used.
The physical connection point on computers, switches, storage arrays, etc, which is used to connect to other devices on a network. Ports on a Fibre Channel network are identified by their Worldwide Port Name (WWPN) IDs; on iSCSI networks, ports are commonly given an iSCSI name. Not to be confused with TCP/IP ports, which are used as virtual addresses assigned to each IP address.
A logical connecting point for a process. Data is transmitted between processes through ports (or sockets). Each port provides queues for sending and receiving data. In an interface program network, each port has an Internet port number based on how it is being used. A particular port is identified with an Internet socket address, which is the combination of an Internet host address and a port number.
A point of access for the device. Hardware ports enable devices to be linked togethor to communicate. An example would be a USB port, which allows plugging in devices such as keyboards and joysticks. Software ports, which are used by firewalls and routers, enable or disable access to and from the computer. If the correct ports are not open on a machine using software that restricts access the machine will not be able to communicate with other computers or networks, such as Battle.net.
A port is basically a connection address specified to allow programs on different computers to communicate. This connection address is represented by a port number from 0 to 65536. Like legitimate programs, malware programs that connect to remote systems often use predefined ports. Some malware use random ports that are defined upon connection. System administrators and desktop users can increase system security by controlling the availability of certain ports. Many ports used by malware and legitimate applications are assigned to specific protocols like HTTP, which uses port 80 by default. IANA maintains a list of port numbers and known uses.
programming: In programming a port (noun) a logical connection place that is used by the TCP/IP protocol suite to make connections for specified services. For example web servers on the world wide web use port 80 as the standard. Web browsers by default send requests for web pages using port 80 and web servers by default "listen" for port 80 requests.
In software, the act of converting code so that a program runs on more than one type of computer. In TCP/IP networking, a number that identifies a specific "channel" used by network services. For instance, Gopher generally uses port 70, but occasionally is set to use other ports on various machines.
For hardware, a connecting component that allows a microprocessor to communicate with a peripheral device. For software, a memory address that identifies the physical circuit used to transfer information between a microprocessor and a peripheral device.
A connection point on a computer. Ports can be actual hardware connectors (e. g. printers can be plugged into a parallel port connector on the back of your computer) or logical network connection points, which are numbers that request specific services from a server. For example, a server called "antoine.frostburg.edu" may run a public Web service on port 80, and a private Web service on port 2000. You could access the public Web service with a URL like http://antoine.frostburg.edu:80, and the private service with http://antoine.frostburg.edu:2000. Certain port numbers are understood as defaults for certain services. For example, port 80 is understood to mean "http services", so http://antoine.frostburg.edu specified as a URL would mean the same as http://antoine.frostburg.edu:80.
A port can be either a connection on a computer circuit board or a remake of a game/application on another system than the first release. For example the arcade game Pac-Man was ported from the Arcade to various home computer systems. [ edit
A connection point on your computer where you can connect devices that pass data into and out of a computer. For example, a printer is typically connected to a parallel port (also called an LPT port), and a modem is typically connected to a serial port (also called a COM port). See also: serial port; universal serial bus (USB)
The port is the interface point where the local loop meets the ISP's network. The port can be configured to provide a minimum speed (Committed Information Rate or CIR), and the maximum data rate (Maximum Information Rate or MIR). The port fee a customer pays to access the Internet is based on both CIR and MIR. Before you sign up for Internet access, you should always ask your rep what the CIR and MIR of the circuit is.
An analog or digital inlet or outlet to the system. The trunks and stations of a PBX are usually connected to ports. Also, a device which the computer uses to communicate with some device, such as a printer or a mouse
1. A physical hole in a computing device where you plug something in (such as, "this PC communicates with the printer via the serial port"). 2. When used in relation to IP services, a made-up, or logical, endpoint for a connection, conceived so that the computer can handle multiple applications over one network connection. Your system figures out how to treat data coming at it partially by looking at what port the data is destined for (for example, HTTP, or Web traffic, by convention uses port 80; SMTP, or e-mail traffic, uses port 25).
An entrance to or an exit from a network. A spot where you plug in a phone or a CO line. (A station card may have 4, 6, 8, 12 etc... ports). Many phone equipment vendors refer to ports as the physical interface between a Switch and a Line or Trunk. Product literature often refers to the number of ports on a phone system. In this context it refers to the number of phones or lines (or sometimes the combination) the system supports. When "Port" is used in relation to Voice Mail, it refers to how many users can access the voice mail at one time.
A connection device between a computer and another component such as a printer or modem. For example, a printer cable is plugged into the printer port on the computer so information can be sent to the computer.
1) Logical, a software constructed location on a server for "listening" or "opening" to different kinds of protocols used on a network. HTTP servers, for example, use port 80, Telnet 23, and Gopher 70 by default, but other port numbers can be assigned for special applications. You may see a port number after the server name in a URL. 2) Physical, a hardware connection for computer input and output. The physical connection for a printer or modem on a computer is known as a communications port.
1.A socket at the back of a computer used to plug in external devices such as a modem, mouse, scanner, or printer. 2.In a communications network, a logical channel identified by its unique port number. 3.To translate software from one computer system to another.
In computing, a port (derived from seaport) is usually an interface through which data are sent and received. An exception is a software port (derived from transport), which is software that has been "transported" to another computer system.
One of the network input/output channels of a computer running TCP/IP. On the World Wide Web, it usually refers to the port number a server is running on. One computer can have many web servers running on it, but only one server can run on each port. á‹ˆá‹°á‰¥ View
An enclosure can either be ported or sealed. Ported enclosures have a tube or port that allows air to move in and out of the cabinet. Compared with sealed enclosures, ported enclosures are typically more efficient (that is, they need less power for a given volume) and play bass more loudly but may not play the deepest bass notes as well.
An opening in a speaker enclosure designed to act together with the air in the enclosure so the back of a driver can produce output over a narrow band of low frequencies to reinforce sound radiated directly by the driver.
An internal line inserted to a large vein leading into the heart which is surgically placed. In order to use the line (access) a needle is inserted through the skin into a reservoir that is placed under the skin usually in the chest.
A small disc with a soft center (about the size of a quarter) that is surgically placed just below the skin in the chest or abdomen. A tube coming out of the side is connected via a large vein directly into the bloodstream. By passing a needle through the skin into the disc, fluid, drugs or blood products can be given without worrying about finding an adequate vein.
A small plastic or metal container surgically placed under the skin and attached to a central venous catheter inside the body. Blood and fluids can enter the body through the port using a special needle.
A tube connected to a quarter sized disc that is surgically placed just below the skin in the chest or abdomen. The tube is inserted into a large vein directly into the bloodstream. Fluids, drugs, or blood products can be infused through a needle that is stuck into the disc.
in the field of minimally invasive urologic surgery, a port is a small tube, about the diameter of a pencil, through which tiny cameras, and other instruments are placed inside a patient to perform surgery that had previously required large incisions.
A tiny (1-2 cm) incision, into which a cannula (hollow, rigid tube) is inserted to act as a conduit for an endoscope or minimally invasive surgical instruments, including da Vinci EndoWrist® instruments.
Every telephone number in Australia is related to a particular telephone company. When you change your telephone company, you can take your telephone number with your by trans(port)ing the number with you. This service is available between Optus, Vodaphone, Telstra and Virgin, but is currently not available between VSP
A port is a term used when referring to FTP sites and is an essential extension of the address used to access them. If the port number of an FTP site isn't specified the default setting of 21 will automatically be used.
Term. Directory. Are what FreeBSD uses to make certain applications available for easy install. The port of a program has a makefile. That makefile grabs the application uncompresses it, compiles it and installs it. The ports are usually located in the directory /usr/ports. You want to install application lynx do the following: 1. Make sure you are root. non root users generally cannot install aplications. 2. cd to the directory where the port is located. cd /usr/ports/www/lynx 3. At the prompt type this command: make clean && make && make install && rehash That's it. application installed have a nice day. You can read more here.
portus (Latin)] A trading-place, not necessarily for water-borne trade, whose inhabitants were in O.E. portware or portmenn. Thus sometimes used as a synonym of "borough" or "town". Portmoot or portmanmoot remained a common name for a town court. By the thirteenth century the town councillors were sometimes called portmen (or chief portmen). (Reynolds, Susan. An Introduction to the History of English Medieval Towns, 199)
A heavily overloaded term which in Darwin has two particular meanings: (1) In Mach, a secure unidirectional channel for communication between tasks running on a single system; (2) In IP transport protocols, an integer identifier used to select a receiver for an incoming packet or to specify the sender of an outgoing packet.
A named location in a URL address. For Project Server, a port is defined by the location of a specific set of view pages on MicrosoftÂ® WindowsÂ® SharePointâ„¢ Services for administration of the SharePoint Services site, such as port 5500 in the address http://ServerName/WSSProjectSite:5500.
The optical surface by which a housed camera or a lens sees an underwater image. Ports are manufactured out of glass or plastic, the latter being the most popular material. There are two kinds of ports: Flat ports, used for lenses with focal lengths longer than 35mm and dome ports (hemispherical) used with shorter focal length lenses.