A facility to block or allow Internet sites and content from being accessed and viewed by an individual, a group of individuals, or all the connected users.
Products allow organisations to enforce Internet access policies that prevent users and employees from accessing inappropriate or unproductive content on the network.
Scans plain text for key phrases and the percent of HTML, images and other indications that the message is spam.
Many Internet sites contain material which is inappropriate for viewing by users. The Web Services for Schools and TAFE uses filtering software which restricts the websites to which users have access.
The blocking, or "filtering," of undesirable Internet content. Businesses can block content based on traffic type. For example, Web access might be allowed, but file transfers may not be allowed. Content can also be filtered by site through the use of lists of URLs that are cataloged by content (these catalogs are updated frequently). Parents can control and restrict their children's access to inappropriate content via special browsers and content filtering programs.
In a variety of situations -- particularly public ones -- it is inappropriate to permit computer users to access pornography or other inappropriate material. Techniques for restricting such access are termed content filtering. One way to accomplish this is by means of a DNS proxy.
Controlling access to a network by analyzing the contents of the incoming and outgoing packets and either letting them pass or denying them based on a list of rules. Differs from packet filtering in that it is the data in the packet that are analyzed instead of the attributes of the packet itself (e.g., source/target IP address, TCP flags).
A filter that screens out data by checking (for example) URLs or key words.
The act of blocking access to sites that contain objectionable material. This function can be performed through commercially available software packages.
Content filtering is the most commonly used group of methods to filter for security problems (e.g. viruses). Content filters act either on the content, the information contained in the mail body, or on the mail headers (like "Subject:") to either classify, accept or reject a mail. Source: Wikipedia
This filter allows a user to search incoming messages for certain words or string of words to either delete, so it never reaches its final destination, or move to a separate folder away from the main inbox.
The identification of messages based on textual criteria such as subject lines, message body content, and sender. AV/F Exchange uses dictionary-based content filtering to scan message bodies and identify undesirable content according to selected semantic categories containing word lists.
