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RS0013 - Advance NAT

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The video picks up where we left off on the Basic NAT video. The more advanced NAT functionalities on Cisco router are demonstrated.

Topic includes
  • Port Forwarding
  • Destination (Outside) NAT
  • NVI NAT (Directionless) (ip nat enable)
  • TCP Load Balancing
  • Multihomed NAT
Notes:
  • Port Forwarding is commonly used when you have limited NAT IP but need to exposed multiple inside services
  • Destination is commonly used when you do not want some outside IP to appear on the inside out your network. A common solution for IP subnet conflict.
  • NVI NAT is commonly used to provide additional flexibility in defining direction of the NAT through ACL.
  • TCP Load Balancing, although rarely used due to its lack of knowledge of inside service availability, is another good demonstration of the power of NAT
  • Multihomed NAT is a specific example of a Conditional NAT, commonly used on an internet router having dual ISP

About Author

Metha Cheiwanichakorn, CCIE#23585 (RS, Sec, SP), is a Cisco networking enthusiast with years of experience in the industry. He is currently working as a consulting engineer for a Cisco partner. As a founder of and an instructor at labminutes.com, Metha enjoys learning and challenges himself with new Cisco technologies.

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