Скачать или смотреть Network Address Translation (NAT) - Part 3 STUN and TURN

We've talked about how NAT works and all of the parts to the architecture. But, we've never gone over how somebody behind a NAT router talks to someone else behind another NAT router. Well - worry no longer! RFC 8489 Session Traversal Utilities for NAT (STUN) and RFC 8656
Traversal Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN) have come to the rescue!

From RFC 8656:
If a host is located behind a NAT, it can be impossible for that host to communicate directly with other hosts (peers) in certain situations. In these situations, it is necessary for the host to use the services of an intermediate node that acts as a communication relay. This specification defines a protocol, called "Traversal Using Relays around NAT" (TURN), that allows the host to control the operation of the relay and to exchange packets with its peers using the relay. TURN differs from other relay control protocols in that it allows a client to communicate with multiple peers using a single relay address.

The rest of the series:
Network Address Translation (NAT) - Part 1 Intro and Demo:    • Network Address Translation (NAT) - Part 1...  
Network Address Translation (NAT) - Part 2 ACLs, Pools and a Traffic Generator!    • Network Address Translation (NAT) - Part 2...  

More NAT stuff:
More recent NAT Intro and demo:    • Network Address Translation (NAT) - Part 1...  
Part 1:    • Network Address Translation (NAT) Basics: ...  
Part 2:    • Network Address Translation (NAT) Basics: ...  
Part 3:    • Network Address Translation (NAT) Basics: ...  
Packet Tracer:    • Network Address Translation (NAT) with Pac...   and    • Let's build! NAT behind NAT and NTP  

For more Packet Tracer or Routing/Switching, take a look at these playlists:

   • Packet Tracer  

   • Routing and Switching  

Books and other products for networkers

Packet Guide to Core Network Protocols: https://www.oreilly.com/library/view/...

Packet Guide to Routing and Switching: https://www.oreilly.com/library/view/...

Packet Guide to Voice over IP: https://www.oreilly.com/library/view/...

Network Engineering Fundamentals: https://www.oreilly.com/videos/networ...

Advanced Network Engineering: https://www.oreilly.com/videos/advanc...

Virtualization, Networking, and Storage: https://www.oreilly.com/videos/virtua...