DNS!! i believe it has to do with call setup and rtp protocol cause all devices shows as sip peers at the call time, but not 100% sure. any iptables plz :) !<br><br><div class="gmail_quote">2010/4/13 Gordon Henderson <span dir="ltr"><<a href="mailto:gordon%2Basterisk@drogon.net">gordon+asterisk@drogon.net</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="h5">On Tue, 13 Apr 2010, khalid touati wrote:<br>
<br>
> Hi Guys,<br>
> i wanted to share this with u and ask for little help at the same time:<br>
> i used iptables to secure my server, so i wnet ahead and blocked avery thing<br>
> except a couple of domain protocols and UDP ports of SIP, IAX2 and that<br>
> range 15000 to 20000, tested it and OK. when in production, the calls were<br>
> taking a huge time 7s to be established and somtimes after call setup people<br>
> cannot hear ech other (but not all the time which weird), so iptables can<br>
> miss up performance if not set correctly (even if it's working, stuff like<br>
> this can happen). so if any body have some lines of iptables that secure<br>
> server and don't cause performence trouble to phone calls please share with<br>
> me (i am using Centos 5.3 asterisk 1.4.24).<br>
<br>
</div></div>You've probably blocks too much and it's stopping DNS working properly.<br>
<font color="#888888"><br>
Gordon<br>
</font><div><div></div><div class="h5"><br>
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