Discuss why NAT is a good security technique.
What will be an ideal response?
NAT is a good security technique because internal IP addresses are concealed from the outside world. In a typical installation, NAT acts like a firewall so that the outside world (external networks) sees only one address, such as 129.52.0.1. However, the internal network contains many computers with addresses such as 192.168.22.1, 192.168.22.2, 192.168.22.3, 192.168.22.4, and so on. When the computer with IP address 192.168.22.4 sends a communication to the outside world, it's translated into the address 129.52.0.1. (NAT can also use a set of addresses for translation to the outside world.)
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