[Asterisk-Users] OT: Multiple SIP phones behind NAT gateway?

[Greg Renouf]

There is a free STUN server at http://www.vovida.org/. I haven't tried
it yet, but from what I hear, it seems to be an okay product.  They have
Cisco's backing too from what I see on their website.

-GSR


-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of WipeOut .
Sent: 23 April 2003 18:03
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] OT: Multiple SIP phones behind NAT gateway?

Hi,

I know this is slightly off topic but I figured the knowlege here is
probably the best on the subject..

I want to setup remote offices with 4 to 6 SIP phones (SNOM 200) using
ADSL and the internet to connect to the Asterisk box..

These phone will be behind an ADSL router using NAT...

I don't want to setup another Asterisk system in each office so IAX is
not an option..

I could use static port mapping on the NAT gateway but I am not sure how
to do this for 6 phones.. I guess I would have to allocate a seperate
port to each.. Also this could have major security implications..

I could use a STUN server but I have not found a free one yet..

I could use an ADSL router with a built in SIP proxy/registrar but the
only one I have found is the Intertex IX66 and they seem quite
expensive..

Anyone got any ideas or thoughts?? or even better experiences..

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