COMPUTER FUNDAMENTALS

Detailed explanation-1: -A proxy firewall, also known as an application firewall or a gateway firewall, limits the applications that a network can support, which increases security levels but can affect functionality and speed.

Detailed explanation-2: -A proxy firewall is also be called an application firewall or gateway firewall. A proxy firewall is also a proxy server, but not all proxy servers are proxy firewalls. A proxy server acts as an intermediary between clients and servers.

Detailed explanation-3: -An application-proxy firewall is a server program that understands the type of information being transmitted-for example, HTTP or FTP. It functions at a higher level in the protocol stack than do packet-filtering firewalls, thus providing more opportunities for the monitoring and control of accessibility.

Detailed explanation-4: -An application-level proxy is one that knows about the particular application it is providing proxy services for; it understands and interprets the commands in the application protocol. A circuit-level proxy is one that creates a circuit between the client and the server without interpreting the application protocol.

Detailed explanation-5: -A firewall and a proxy server are both parts of a network’s security. Firewalls can prevent unauthorized access to your computer by blocking ports and programs, whereas proxy servers effectively hide your internal network from the Internet.