Hi Maarten, Thanks for you reply. I actually block all outbound traffic from staff segments and now I have users Who wish to use various SIP applications to chat.
Because I block all UDP and TCP I need a way to permit just SIP without permitting all outbound UDP ports to anywhere. Thanks again. Regards Eric -----Original Message----- From: Maarten Vink [mailto:[EMAIL PROTECTED] Sent: 01 February 2005 17:10 PM To: Eric Appelboom Subject: Re: [gb-users] Gnatbox's and permitting voip\sip Eric Appelboom wrote: > Hi, > > Are Gbwares\gnatbox (ver3.5+) able to understand voip? > We block all traffic inbound and outbound but would like to permit > voip(sip) through the gateway. > Any pointers will be appreciated. > > Regards > Eric Appelboom There is no SIP application proxy built-in, but you can easily tunnel inbound SIP traffic (UDP port 5060) to your PBX, or pass outbound traffic through the firewall. If both sides use NAT, it depends on the specific implementation you are using; most of the times this will not pose a problem. Using VPN to connect two phones works as well; we have been using this setup in our production network for several months now without problems. Regards, Maarten ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/
