[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Linphone-users] Re: linphone access when a firewall is involved...
From: |
Simon Morlat |
Subject: |
Re: [Linphone-users] Re: linphone access when a firewall is involved... |
Date: |
Tue, 27 Jun 2006 15:11:30 +0200 |
User-agent: |
KMail/1.9.1 |
Le lundi 19 juin 2006 17:16, Petr Pisar a écrit :
> Simon Morlat wrote:
> > SIP and RTP use UDP not TCP.
>
> This is not true. According to RFC every SIP implementation has to
> support SIP over TCP. Clients are also supposted to be ready to recieve
> SIP message over TCP even if previous message of dialogue comes via UDP.
> This is because of client should use TCP instead of UDP if the message
> lenght is larger then MTU - (cca) 200 B.
>
> -- Petr
You are right. I did not notice that in RFC3261. In practice, since RTP can
only use UDP, I don't see the interest of using TCP/SIP in a audio-video
phone.
Simon
>
> > Le mercredi 14 juin 2006 21:39, William Bulley a écrit :
> >> I have installed linphone 1.3.5 on two FreeBSD 6.1 machines
> >> and demonstrated that it works as advertised on my local
> >> (private) LAN between those two systems using non-routeable,
> >> RFC-1918 (net ten) IP addresses. When I try to use linphone
> >> across the Internet to another FreeBSD 6.1 user also running
> >> linphone 1.3.5 (both of us have firewalls), it does not work
> >> as advertised. We are able to connect using SIP and to chat
> >> in the chat window (ASCII text only), so I do know that both
> >> linphone configurations are correct at least for SIP. However,
> >> no RTP audio works between the two instances: my local linphone
> >> and the remote (to me) user's linphone.
> >>
> >> Both of our firewalls have been configured to allow inbound
> >> access from any source to our local LAN machines for both
> >> the SIP protocol (on TCP port 5060) and the RTP protocol (on
> >> TCP port 7078). Since the complete linphone application is
> >> known to work on my local LAN between two local machines, I
> >> am suspecting that something is amiss with the configuration
> >> of the firewall on my end or the firewall on the other end.
> >>
> >> I can give further details of my firewall setup if needed,
> >> but I thought I might ask here first if there is something
> >> else that I need to check. Maybe I am missing something
> >> obvious (but not to a new user of linphone) that is simple
> >> to correct. Thanks!
> >>
> >> Regards,
> >>
> >> web...
> >>
> >> --
> >> William Bulley Email: address@hidden
> >>
> >>
> >>
> >> _______________________________________________
> >> Linphone-users mailing list
> >> address@hidden
> >> http://lists.nongnu.org/mailman/listinfo/linphone-users
>
> _______________________________________________
> Linphone-users mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/linphone-users