COMPUTER NETWORKING

Detailed explanation-1: -Application-layer proxies operate up to Layer 7. Unlike packet filter and stateful firewalls, which make decisions based on layers 3 and 4 only, they can make filtering decisions based on application-layer data, such as HTTP traffic as well. Did you Know?

Detailed explanation-2: -Layer 7 of the OSI model, or the application layer, supports communications for end-user processes and applications, and the presentation of data for user-facing software applications.

Detailed explanation-3: -Proxy firewalls filter traffic at the application layer, which is Layer 7 of the Open Systems Interconnection model. The technology is similar to traditional packet filtering firewalls, but proxy firewalls add an extra level of protection.

Detailed explanation-4: -The layer 7 load-balancer acts as a proxy, which means it maintains two TCP connections: one with the client and one with the server. The packets are re-assembled then the load-balancer can take a routing decision based on information it can find in the application requests or responses.

Detailed explanation-5: -Layer 7: The Application Layer Closest to the end user, layer 7 is the only layer that interacts directly with user data. Email clients, web browsers, and other software applications all rely on layer 7 to initiate communications.