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Refer to the exhibit. The configuration is intended to enable Port Address Translation (PAT) on router R1. NAT is working but PAT is not. Packets are not being translated and hosts are not being able to connect to the Internet. What can be done to solve the issue?
Increase the pool size of POOL100.
Remove the interface subcommand _ip nat inside.
Match the packets sent by the inside hosts to the configured ACL.
Add the keyword overload at the end of ip nat inside source list.
When configuring NAT overload or PAT, it is very easy to forget the keyword _Overload. Without this keyword, NAT would work for only for one Public IP but PAT will not work. PAT can work with only one inside global IP address so there is no need to increase the pool. In NAT configuration, it is imperative to have an inside as well as an outside flow configured in each interface. The ACL in the configuration matches the ip nat inside interface. For more information refer to: [Odom W. - Cisco CCENT - CCNA ICND1 100-101 Official Certification Guide, Chapter 24].
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