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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8284 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep 2008-03-13 00:04:31 +00:00
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docs/FAQ.xml
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@ -493,6 +493,33 @@ eth1:192.168.1.4 0.0.0.0/0 192.168.1.1 tcp 21</
to reply back through the Shorewall system who can then rewrite the
SOURCE IP address in the responses properly.</para>
</section>
<section id="faq1g">
<title>(FAQ 1g) I would like to redirect port 80 on my public IP
address (206.124.146.176) to port 993 on internet host 66.249.93.111
</title>
<para><emphasis role="bold">Answer</emphasis>: This requires a vile
hack similar to the one in <link linkend="faq2">FAQ 2</link>. Assuming
that your Internet zone is named <emphasis>net</emphasis> and connects
on interface <filename class="devicefile">eth0</filename>:</para>
<para>In <filename>/etc/shorewall/rules</filename>:<programlisting>#ACTION SOURCE DEST PROTO DEST PORT SOURCE ORIGINAL
# PORT DEST.
DNAT net net:66.249.93.111:993 tcp 80 - 206.124.146.176</programlisting></para>
<para>In <filename>/etc/shorewall/interfaces</filename>, specify the
<emphasis role="bold">routeback</emphasis> option on
eth0:<programlisting>#ZONE INTERFACE BROADCAST OPTIONS
net eth0 detect <emphasis role="bold">routeback</emphasis></programlisting></para>
<para>And in <filename>/etc/shorewall/masq</filename>;<programlisting>#INTERFACE SOURCE ADDRESS PROTO PORT
eth0:66.249.93.111 0.0.0.0/0 206.124.146.176 tcp 993</programlisting></para>
<para>Like the hack in FAQ 2, this one results in all forwarded
connections looking to the server (66.249.93.11) as if they originated
on your firewall (206.124.146.176).</para>
</section>
</section>
<section id="faq30">