Hello Simon, Thursday, February 9, 2006, 11:41:32 PM, you wrote: SH> It appears you are using a vendor specific softphone which has a media SH> proxy but not signalling proxy. So the signalling is coming directly from SH> the NATed EP however the media is being proxied through another IP SH> address. The problem appears that the endpoint is not sending the SH> correct or omitting the H245_TransportAddress for the RTP proxy in the SH> OLCack. This is definitely a problem in the softphone. If the provider was SH> to proxy call signalling then this problem would most likely be fixed. We are using SoftPhone, based on OpenPhone, it not use any proxy. Major endpoints have not problems with voice. It's problem of cpecific providers. SH> But to allow GNUGK to detect RTP packets from anywhere and fully SH> autodetect? This maybe a little dangerous. SH> That decision to make the change would be up to Jan. Ok, it may be small hole, but GnuGK must not accept RTP packets from third address. For example: IP1,IP1,IP1,IP2,IP1,IP2,IP1,IP2,IP1,IP2 OK IP1,IP2,IP1,IP2,IP2,IP3,IP2,IP3,IP2,IP3 OK (may be dynamic routing) but IP1,IP2,IP1,IP2,IP3,IP1,IP2,IP3,IP1,IP2,IP3 - intrusion, we must ignore packets from IP3. Case, when IP3 sends first packet before IP2, have too low probability. IP3 must permanently (and before session start) send packets to specific port, and it can be detected. -- Best regards, Roman mailto:roman@xxxxxx ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________________ Posting: mailto:Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Unsubscribe: http://lists.sourceforge.net/lists/listinfo/openh323gk-users Homepage: http://www.gnugk.org/