Re: [asterisk-users] Portech MV-374 does not register behind NAT

[Jonas Kellens]

Jared, thank you for your answer. As I said in my previous mail, I'm using a Zyxel NBG-419 router (which normally supports VoIP and QoS). Firewall is disabled on the Zyxel. The MV-374 only accepts IP-address, not a FQDN. Will give it another try though... The answer from Portech-support : "use STUN". Even if the NAT rewrites the IP-address/port combination, why is it a problem for the Portech and not for the IP-phones (Grandstream & Snom) ? They all communicate on port 5060 --> 5064 (several SIP-accounts) Jonas. Jared Smith wrote: On Thu, 2010-04-22 at 17:45 +0200, Jonas Kellens wrote: All goes well when the gateway is connected directly to the internet... It's when it is behind NAT the 401 is sent from Asterisk... Is the device registering to an IP address, or do a DNS name? What type of NAT firewall are you using? This reminds me of a problem I had years ago with a Cisco PIX firewall, where it would rewrite IP addresses in the SIP Request URI, causing the authentication to fail. One solution was to have it register to a fully-qualified domain name instead of an IP address, so that the Request URI wouldn't get overwritten. It's certainly worth a shot... -- Jared Smith Digium, Inc.

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