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Add one-way-voip FAQ

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8521 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep 2008-05-24 00:27:50 +00:00
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docs/FAQ.xml
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@ -2407,6 +2407,28 @@ eth0 eth1 # eth1 = interface to local netwo
</section>
</section>
<section id="VOIP">
<title>VOIP</title>
<section>
<title>(FAQ 77) Shorewall is eating my Asterisk egress traffic!</title>
<para>Somehow, my firewall config is causing a one-way audio problem in
Asterisk. If a person calls into the PBX, they cannot hear me speaking,
but I can hear them. If I plug the Asterisk server directly into the
router, bypassing the firewall, the problem goes away.</para>
<para><emphasis role="bold">Answer (requires Shorewall 4.0.6 or
later):</emphasis> If your kernel version is 2.6.20 or
earlier:<programlisting>rmmod ip_nat_sip
rmmod ip_conntrack_sip</programlisting>Then change the DONT_LOAD specification
in your shorewall.conf to:<programlisting>DONT_LOAD=ip_nat_sip,ip_conntrack_sip</programlisting>If
your kernel version is 2.6.21 or later:<programlisting>rmmod nf_nat_sip
rmmod nf_conntrack_sip</programlisting>Then change the DONT_LOAD specification
in your shorewall.conf to:<programlisting>DONT_LOAD=nf_nat_sip,nf_conntrack_sip</programlisting></para>
</section>
</section>
<section id="Misc">
<title>Miscellaneous</title>