NAT, PAT, STP, SNAT, ARP - Which Rule is Implemented for HTTP Traffic?

A firewall administrator is implementing a rule that directs HTTP traffic to an internal server listening on a non-standard socket.

Which of the following types of rules is the administrator implementing?

A.

NAT

B.

PAT

C.

STP

D.

SNAT

E.

ARP.

B.

The correct answer is B. PAT (Port Address Translation).

Explanation:

Firewalls use rules to determine how to handle network traffic. In this scenario, the firewall administrator is implementing a rule that directs HTTP traffic to an internal server that is listening on a non-standard socket. This means that the internal server is using a port number that is not the default port number for HTTP traffic (port 80).

PAT (Port Address Translation) is a type of NAT (Network Address Translation) that allows multiple devices on a local network to share a single public IP address. In this case, the firewall is using PAT to translate the non-standard port number used by the internal server to the standard HTTP port (port 80) that is used by external clients.

The other options are:

A. NAT (Network Address Translation): NAT is a technique used to map public IP addresses to private IP addresses. NAT allows multiple devices on a local network to share a single public IP address. However, NAT alone does not address the issue of directing traffic to a non-standard port number.

C. STP (Spanning Tree Protocol): STP is a protocol used to prevent loops in network topologies. STP is not related to directing traffic to a non-standard port number.

D. SNAT (Source Network Address Translation): SNAT is a technique used to map the source IP address of a packet to a different IP address. SNAT is not related to directing traffic to a non-standard port number.

E. ARP (Address Resolution Protocol): ARP is a protocol used to map an IP address to a physical (MAC) address. ARP is not related to directing traffic to a non-standard port number.