[asterisk-users] Asterisk behind Sonicwall firewall

[Eric "ManxPower" Wieling]

Barry Fawthrop wrote:
> Hi all
> 
> Anyone using a sonicwall firewall ?
> I have been and then suddenly  it drops UDP packets because SIP is no 
> longer on port 5060 but some random assigned port ?
> 
> Why ?

SIP is still on 5060, but the AUDIO (which is RTP) is on a dynamically 
negotiated port.  Now you understand why many people in the VoIP 
business would love to meet the people that designed SIP in a dark alley.

Read the mailing list archives and the Wiki for information working 
around these issues.