Santos:CCNA Sec 210-260 OCG

Inside, Outside, Local, Global

Some terms that are used with NAT are often confusing, such as the words inside, outside, local, and global. Before looking at these words specifically, here are some options that you can do with NAT that will make these terms more meaningful.

You can translate the IP address of User 1 as its packets go out to the Internet. This is an example of something often referred to as inside NAT (performing translation for a packet coming from an inside host). You can also translate the source IP address of a device that lives on the outside as its packets come into your local network. This is commonly referred to as outside NAT. So, if you were going to do both inside NAT and outside NAT, for User 1 on the inside and Server ...