Depends on what you mean by firewall. If both ends are behind a NAT type router then you shouldn't have any problems provided you configure 'nat=yes' and 'qualify=yes' in Asterisk, and the appropriate STUN settings in the phone. The qualify is important as it keeps a 'session' open in the NAT router between the asterisk IP and the phone.
If * is behind a firewall then you most likely will be out of luck, you will find that the audio stream from the phone is discarded by the firewall as * chooses the port randomly and firewall can't see inside the SIP packet to determine the port * has specified. One solution would be to use SER and an RTP Proxy, you'd still have to open up a range of UDP ports based on the number of concurrent calls but it should work. We're sorta in a similar situation with work, and are stuck with MS ISA as a 'firewall' for a few weeks until our hardware firewalls arrive. ISA will not pass the traffic, it needs someone to write a SIP 'application filter' so it can read the SDP inside the SIP traffic and dynamically open and close the RTP ports. If I was a programmer I'd have a go at writing one but I'm just a lowly sysadmin. Craig ----- Original Message ----- From: "Ferguson, Michael" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <[EMAIL PROTECTED]> Sent: Saturday, October 16, 2004 3:39 AM Subject: [Asterisk-Users] Using my GrandStream remotely G'Day All, I have a GS Budge Tone-100 on my LAN behind a firewall. What settings, on the IP Phone and on the * server, do I have to configure so I can use the IP Phone at some other location with a broadband connection? Thanks for your assistance. Ferg. _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
