NAT Playlist:    • NAT  

http://blog.ine.com/2008/02/15/the-in...

http://www.astorinonetworks.com/2011/...

https://www.cisco.com/c/en/us/support...

https://www.cisco.com/c/en/us/support...

IP nat inside source (Normal NAT for Internet)
o Translates the source of the IP packets when traveling from inside to outside
o Translates the destination of the IP packets when traveling from outside to inside


IP nat outside source (Useful for overlapping subnets)
o Translates the source of the IP packets when traveling from outside to inside
o Translates the destination of the IP packets when traveling inside to outside