What are the advantages of using private addressing with NAT?
What will be an ideal response?
Using private addressing with NAT has several advantages over public IP addressing. First, it conserves public IP addresses. Networks can make use of the private IP address ranges and NAT to either a single external public IP or a smaller pool of public IP addresses. It also hides your internal IP addressing scheme from the outside world, greatly enhancing network security. Finally, it allows for easy renumbering of your IP addresses. For example, if you use all public IP addresses and suddenly decide to change ISPs, you must change all of your internal IP addressing. Using NAT, the internal network uses private IP addresses, which need not change. You would only need to change your outside NAT addresses if you decided to change ISPs.
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