dns

The video walks you through different methods that Cisco Access Point uses to discover Wireless LAN Controller and how an AP makes a decision on which controllers to join. Each method will be demonstrated with their order of priority explained. We will mention the purpose of Master Controller and stress on importance of controller priming. Wireshark analysis will be performed throughout the lab for us to examine controller discovery and AP registration processes. 

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.

• Application-Level NAT (ip nat service)