Information, Computer and Network Security Terms Glossary and Dictionary

Application Proxy

An application proxy, also known as application level proxy or application-level gateway, is an application program that runs on a firewall system between two networks. When a client program establishes a connection to a destination service, it connects to an application gateway, or proxy. The client then negotiates with the proxy server in order to communicate with the destination service. In effect, the proxy establishes the connection with the destination behind the firewall and acts on behalf of the client, hiding and protecting individual computers on the network behind the firewall. This creates two connections: one between the client and the proxy server and one between the proxy server and the destination.

Related Terms

Application Proxy