filter

filter: For Indexing Service, software that extracts content and property values from a document to index them.

For Internet Protocol security (IPSec), a specification of Internet Protocol (IP) traffic that provides the ability to trigger security negotiations for a communication based on the source, destination, and type of IP traffic.

For Internet Information Services (IIS), a feature of Internet Server Application Programming Interface (ISAPI) that allows preprocessing of requests and postprocessing of responses, permitting site-specific handling of Hypertext Transfer Protocol (HTTP) requests and responses.

In IP and Internetwork Packet Exchange (IPX) packet filtering, a definition in a series of definitions that indicates to the router the type of traffic allowed or disallowed on each interface.