Question

Prompt:

Please consider the statement and then respond to each question.

• What are the main differences between Network Address Translation (NAT) and Port Address Translation (PAT)? Explain both to your class.
• Assume that you work in a company with a firewall configured to protect the internal network from the outside Internet. Ask your students whether they would recommend installing and configuring personal firewalls on all company workstations as well. Why or why not?

Answer 1

Difference Between NAT and PAT

1.   NAT stands for Network Address Translation. Whereas, PAT stands for Port Address Translation.
2.   In NAT, Private IP addresses are translated into the public IP address. Whereas, In PAT, Private IP addresses are translated into the public IP address via Port numbers.
3.   NAT can be considered PAT’s superset. But, PAT is a dynamic NAT.
4.   NAT uses IPv4 address. Whereas, PAT also uses IPv4 address but with the port number.
5.   It has 3 types: Static, Dynamic NAT and PAT/ NAT Overloading/IP masquerading. Whereas It also has two types: Static and Overloaded PAT.

Configuring firewalls:

Yes, they will recommend installing firewalls as a personal firewall on a workstation or portable computer, will protect their systems from common network attacks. It will be a good and low-cost Precaution.