Le dimanche 20 mai 2007 à 17:45 +1000, Jason Grant a écrit : > My brother and I are both running recent linux kernels with Fedora Core > 6, and are experiencing the same sort of problem when trying to > establish a conversation via Ekiga. > > In short, sound/video appears to be hitting our public interfaces, but > the packets are being dropped there and so are not routed to the > internal hosts. > > >From what I can tell, only the inbound SIP packets are dropped; > everything else seems to reach the internal host OK (e.g. the STUN tests > run OK). On configuring STUN, ekiga informs us both that we have port > restricted NAT. This sounds correct - for example in my case, the > public gateway/firewall is another fedora 6 box effectively running the > iptables script from the ekiga wiki. >
Well, actually, it is not correct : Linux is in fact a Symmetric NAT with port overloading. In short, it will work for one Ekiga instance, but not for two. > The puzzling thing about our plight is that ekiga works fine for each of > us when we connect to the echo server at sip:[EMAIL PROTECTED] To be sure > it's not a timing issue, I've set up the conntrack kernel variables as > described on the wiki (although under fedora, the filesystem location is > slightly different - > e.g. /proc/sys/net/netfilter/nf_conntract_udp_timeout_stream), without > success. > > I am able to trace packets on my router, reconfigure the firewall, etc., > but am not sure what to try next. Suggestions on how to troubleshoot > this would be appreciated. I know I could probably fix this by > forwarding ports, but I'd rather persist with the STUN approach if > possible. Is there a way to know why it drops the packets ? (through some logging or something similar). -- _ Damien Sandras (o- //\ Ekiga Softphone : http://www.ekiga.org/ v_/_ NOVACOM : http://www.novacom.be/ FOSDEM : http://www.fosdem.org/ SIP Phone : sip:[EMAIL PROTECTED] _______________________________________________ ekiga-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/ekiga-list
