Single Sign On. Single Sign On is an optimization of the authentication sequence to remove the burden of repeating actions placed on the requestor. To facilitate SSO, an element called an Identity Provider can act as a proxy on a requestor's behalf to provide evidence of authentication events to 3rd parties requesting information about the requestor. These Identity Providers (IP) are trusted 3rd parties and need to be trusted both by the requestor (to maintain the requestor's identity information as the loss of this information can result in the compromise of the requestors identity) and the Web services which may grant access to valuable resources and information based upon the integrity of the identity information provided by the IP.
Single Sign On - one log-on provides access to all resources of the network, LAN, WAN, etc.
Single Sign-On is an authentication process in a client/server relationship where the user, or client, can enter one name and password and have access to more than one application or resource across an enterprise.
Single sign-on is a process that allows a user to enter authentication details once in order to access multiple applications or resources. A list of access rights for individual users are stored on the server. When an authentication request is received, the user is authorised to access all the applications listed.
A means of allowing a user to login once to a corporate network and then access all business applications without the need to login again for each one; behind the scenes each application talks to the SSO system to verify the user's access. Applying SSO security to search engines, to insure that users can only search and find documents they are entitled to see, is a very hot topic these days.