[Asterisk-Users] NAT and only been able to have 1 SIP phone behind

Anton Krall akrall-lists at intruder.com.mx
Wed Apr 20 09:04:30 MST 2005


That’s exactly what I thought but there are many parts on the wiki where
they mention the "more than 1 SIP client behind NAT" mmyth..... Oh well,
maybe an urban legend? :) 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Eric Wieling
aka ManxPower
Sent: Miércoles, 20 de Abril de 2005 06:04 a.m.
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] NAT and only been able to have 1 SIP phone
behind

Anton Krall wrote:
> Guys.
> 
> Ive read on the wiki that a common problem with nat is that you can 
> only have 1 sip phone behind, how do you get around this issue? Having 
> a sip enabled router behind the nat like the GS 488 489 or 486? Or how 
> have you done it without having any kind of linux box (SER or *) behind
the nat.
> 
> The idea is to have 2 or more sip clients behind some NAT and been 
> able to connect to a remote asterisk box.

I don't know why people think this.  Any router with PAT (Port Address
Translation) should work with multiple SIP clients behind NAT.  Most routers
support PAT (but may not call it that).



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