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RS0014 - DNS-FTP Application NAT

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The video discusses how NAT affects embedded IP in an application payload as the packet passes through a Cisco NAT router. Two widely used applications: DNS and FTP, are chosen for our demonstration. We go into great detail to analyze FTP protocol behavior using both passive and active mode. Lastly, we look at how a router cope with non-standard FTP port. Wireshark captures are reviewed throughout this video.

Topic includes
  • Application-Level NAT (ip nat service)

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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