-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Joachim Schipper wrote:
Hi Joachim > I don't really get what you want to do. What connects to what, and which > IP address are we talking about (does the phone get an address from the > firewall? The firewall from the ISP?)? From which traffic should the IP > be extracted? Are you aware that this is almost certainly not very > secure? The VOIP phone is connnected to a D-Link router which is connected to an ISP via DHCP. This is connected through the Internet to the head office firewall which uses a static IP specifically for the VOIP phone. The VOIP phone is hardwired to call home to the allocated firewall IP at head office and it uses specific ports to boot and stay alive so they are easily detected when the phone calls home. The address of the DHCP Dlink router will change at some point so I want to be able to detect the IP change at the firewall and automatically insert the new DLink router IP address into a table on the firewall so connnectivity is uninterrupted or a least minimized. What I am hoping to be able to do seamlessly is extract the IP from the phone traffic when it calls home, basing it on port number and insert the IP into a table. I would like to run something like authpf using the $userip macro but the workstation at the VOIP phone office is an HP terminal. I had setup an OpenVPN box which worked very well but it was unplugged for unknown reasons as it is not my network. A little extra info: Once the traffic gets through the firewall it is then connected to a control unit that reads the embedded MAC of the VOIP phone and if it matches it then moves on to setup a full connection. The VOIP phone MAC supplied by the phone during the phone boot phase. If the MAC doesn't match, no connection. Thanks for your response Joachim Bob D Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFja/9K35IA5yVGFsRAjFqAKDJMlR2n/DRl0j5mx45GADCQP40GQCeMSfl At6rfPKjF15mF1jAGpTZAE0= =8XHI -----END PGP SIGNATURE-----
