Dynamic PAT - Network Address Translation

Dynamic PAT allows many internal hosts to share one (or more) external IP address. It does this by assigning unique source ports to each outbound connection such that the response traffic can be untranslated successfully to the initiating host.

Dynamic PAT is the type of address translation which allows for the maximum conservation of IP Addresses. Dynamic PAT is often confused with Dynamic NAT.

In this video we show you the packet flow through a Dynamic PAT, showing you the packet before and after translation -- in BOTH directions (inbound and outbound).

This is a look at Dynamic PAT from a Vendor Neutral perspective. The concepts in this video will apply to any Static NAT translation, on any platform, from any vendor.

00:00 - Dynamic PAT definition
00:47 - Dynamic PAT Illustration & Configuration
01:50 - Dynamic PAT Packet Flow - Initial Traffic Outbound
03:09 - Source Port number in packets
04:56 - Dynamic PAT Packet Flow - Response Traffic Inbound
05:59 - Why is the Source Port randomized?
08:31 - Dynamic PAT is Unidirectional
10:41 - Dynamic PAT can be combined with Static PAT
11:46 - Many to One translation
12:35 - Every IP in allows for 65k~ concurrent connections
13:37 - Dynamic PAT is Unidirectional
14:06 - Summary (lol, did you catch my typo? Firewpower ... )

📌 Full NAT Playlist:
   • Network Address Translation  

📌 Learn to configure / verify / troubleshoot NAT on Cisco Routers:
https://classes.pracnet.net/courses/n...

📌 Learn to configure / verify / troubleshoot NAT on Cisco ASA, ASAx, and Firepower Firewalls:
https://classes.pracnet.net/courses/n...

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