[asterisk-users] Why Nat=yes Nat=no Option?

Klaus Darilion klaus.mailinglists at pernau.at
Thu Nov 13 13:17:23 CST 2008

Alex Balashov schrieb:
> Klaus Darilion wrote:
>> Of course we know that we should implement RFC conform. But RFC 3261 has 
>> ignored the fact that the Internet is full of NATs and standard conform 
>> implementations can not work. This in the case of SIP it necessary to 
>> break the RFC.
> By default?
> NAT itself is a hack;  therefore, I would think that NAT traversal 
> assistance should be enabled when NAT is used.  Why would we presume NAT 
> and implement behaviour that is only desirable under NAT as a default?

Because NAT is the default. At least in Austria - most customers get a 
NAT router with their DSL Account.


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