NAT Question

NightShade03

Ok I seem to have some confusion over the terms that they explain with NAT. I understand how NAT works and use it at home for port mapping and redirection and such. The book says:

Inside / Local -> essentially your local LAN address
Inside / Global -> your public IP address
Outside / Global -> any standard internet IP address
Outside / Local -> I have no clue

Seems the last part is whats throwing me off. Any advice?

APA

Outside - Local = Any address you wish your inside clients to use which you will then map to the Outside -Global address (the real live IP)

Think of a situation where you want to hide a DMZ server address or an external server address from your internal clients... Hence you control this via your outside nat's

Thus - inside clients will only utilize the Outside-Local addres, they should never use the real address as identified by the Outside-Global address.

Another situation would be where a clash of IP addressing happens and you need to translate the real outside address (Outside-Global) to something your inside hosts can use to bypass IP addressing\routing conflicts...(Outside-Local).

Hope this helps