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FreeSWITCH 1.8
book

FreeSWITCH 1.8

by Giovanni Maruzzelli, Anthony Minessale II
July 2017
Intermediate to advanced
434 pages
12h 59m
English
Packt Publishing
Content preview from FreeSWITCH 1.8

The four pitfalls of NAT

There are four basic pitfalls of NAT that everyone should learn. Understand these pitfalls and you will be well-equipped to handle the NAT scenarios that you'll no doubt face:

  • NAT can be there even when you don't know about it. The Internet does not have to be involved.
  • Any two techniques to defeat NAT used together will cancel each other out.
  • Some devices use a SIP ALG (Application Layer Gateway) to defeat NAT. They even do that without telling you.
  • NAT correction techniques (like ALG) can falsely identify a situation and actually make things even worse.

Become familiar with these pitfalls. They are referenced frequently throughout this chapter.

Let's discuss each of these in more detail:

  • NAT can be there even ...
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Publisher Resources

ISBN: 9781785889134