Information, Computer and Network Security Terms Glossary and Dictionary

Application Level Gateway

Application level gateways, also known as application layer firewalls or application proxy firewalls, are often described as third generation firewalls. When a user on the trusted networks wishes to connect to a service on the untrusted network such as the Internet, the application is directed to the proxy server on the firewall. The proxy server effectively pretends to be the real server on the Internet. It evaluates the request and decides to permit or deny the request based on a set of rules that are managed for the individual network service.

Related Terms

Application Level Gateway