Question 49

Port Address Translation (PAT) is being leveraged.

Port Address Translation (PAT) allows multiple devices on a local network to be mapped to a single public IP address but uses different ports for each session. In this case, the firewall receives traffic on port 80 and forwards it to an internal server on port 88, which is indicative of PAT functionality.

A) TLS

Transport Layer Security (TLS) is a cryptographic protocol designed to provide secure communication over a computer network. It does not specifically relate to the translation of ports or the redirection of traffic between different ports on a server.

B) FHRP

First Hop Redundancy Protocol (FHRP) is used for providing redundancy for IP address gateways, ensuring high availability in routing. This technology does not involve port translation or the forwarding of traffic between different ports, making it irrelevant to the scenario described.

C) SSL

Secure Sockets Layer (SSL) is another cryptographic protocol that provides secure communication over the internet. Similar to TLS, SSL is focused on securing data transmissions rather than managing port forwarding or translation, which is the core function being described in the question.

D) PAT

Port Address Translation (PAT) is a specific method of network address translation (NAT) that allows multiple devices to share a single public IP address by using different ports. The scenario describes a firewall forwarding traffic from port 80 to 88, demonstrating the use of PAT to manage and translate port numbers for internal traffic.

Conclusion

Port Address Translation (PAT) is the correct answer as it directly relates to the forwarding of traffic from one port to another while maintaining a single public IP address. Other options, such as TLS, FHRP, and SSL, do not pertain to the function of translating or managing port numbers, thus failing to address the specifics of the scenario presented.