What is the main purpose of implementing NAT on a network?

The purpose of implementing NAT on a network is to allow multiple devices within a private network to share a single public IP address of the network gateway (usually a router).

At what layer of the OSI model does NAT happen?

Network Layer (layer 3)

What happens to packets when NAT runs out of addresses in the pool of available IPs?

It can no longer assign unique IP addresses to incoming packets from private devices.

What disadvantage does using NAT pose for routers?

• Traceability and troubleshooting
• Limited scalability
• Increase complexity
• Impact on certain network protocols
• End-to-end connectivity

Citation:

• https://www.professormesser.com/network-plus/n10-007/network-address-translation-3/
• https://www.professormesser.com/network-plus/n10-007/common-network-types/
• https://www.professormesser.com/network-plus/n10-007/ipv4-and-ipv6-addressing/
• https://www.geeksforgeeks.org/network-address-translation-nat/