proxy server

Acts as an intermediary between workstation and Internet, providing security, administrative control, caching service. Separates network from outside network and local firewall. Firewall server protects network from outside intrusion. Proxy server receives requests for Internet services -- e.g. web page requests -- from many users. If proxy server also cache server, looks in local cache of previously downloaded web pages, if finds, is sent to user without forwarding request to Internet, if doesn t find in cache, acts as client on behalf of user, uses one of own IP addresses to request page from Internet, sending page to user when found.