<div dir="ltr">Thank you very much. This is a good tip. I will see openvpn.<br><br>Please have a look at the scientific miracles of CORAN: <a href="http://www.55a.net/">http://www.55a.net/</a><br><br>Thank you again.<br><br>
<div class="gmail_quote">On Thu, Feb 11, 2010 at 10:58 PM, Hans Witvliet <span dir="ltr"><<a href="mailto:hwit@a-domani.nl">hwit@a-domani.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
-------- Forwarded Message --------<br>
> From: mosbah.abdelkader <<a href="mailto:mosbah.abdelkader@gmail.com">mosbah.abdelkader@gmail.com</a>><br>
> Reply-To: Asterisk Users Mailing List - Non-Commercial Discussion<br>
> <<a href="mailto:asterisk-users@lists.digium.com">asterisk-users@lists.digium.com</a>><br>
> To: <a href="mailto:asterisk-users@lists.digium.com">asterisk-users@lists.digium.com</a><br>
> Subject: [asterisk-users] SIP tunnel<br>
> Date: Thu, 11 Feb 2010 14:37:24 +0100<br>
><br>
> Hello,<br>
<br>
> I have the following situation: A firewall is blocking all SIP and RTP<br>
> traffic in the side of some of my clients. My clients cannot change<br>
> settings of the firewall.<br>
> I need to solve this problem and I need some help from you.<br>
> I have this idea: implement a SIP user agent which does not use well<br>
> known SIP ports (uses http port 80 for example) and use other ports<br>
> that are not blocked by the firewall for RTP (FTP, https,<br>
> ssh, ...ports). Then, configure Asterisk to use the same ports to<br>
> interact with the client.<br>
> Is this idea feasible? if not what are the problems? please give me<br>
> your opinions about the situation?<br>
<br>
> _____________________________________________________________________<br>
<br>
I would rather suggest to build a ssl-tunnel between those locations.<br>
Have a look at openvpn,..<br>
Firewalls seldom block port-443 as it is also used for https...<br>
</blockquote></div><br><br clear="all"><br>-- <br>Please discover scientific miracles of CORAN<br><br><a href="http://www.55a.net/">http://www.55a.net/</a><br>
</div>