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Replace eth1 by eth2 in FAQ 2e

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
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Tom Eastep 2014-05-22 07:20:36 -07:00
parent 966926fac5
commit b088ea77cd
1 changed files with 16 additions and 9 deletions
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25
docs/FAQ.xml
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@ -927,29 +927,30 @@ DNAT loc dmz:192.168.2.4 tcp 80 - <emph
is a bridge and the solution in FAQ 2 doesn't work</title>
<para><emphasis role="bold">Answer</emphasis>: Assume that the bridge
is br0 and that eth1 is the bridge port that connects to the LAN
is br0 and that eth2 is the bridge port that connects to the LAN
containing 192.168.1.5</para>
<para>In addition to the steps in FAQ 2, you also need to:</para>
<para>In addition to the steps in FAQ 2 (replacing eth1 with br0), you
also need to:</para>
<orderedlist>
<listitem>
<para>Set the <firstterm>hairpin</firstterm> option on
eth1.</para>
eth2.</para>
<programlisting>brctl hairpin br0 eth1 on</programlisting>
<programlisting>brctl hairpin br0 eth2 on</programlisting>
<para>On Debian and derivitives, you can place that command in
/etc/network/interfaces as a post-up command:</para>
<programlisting>auto br0
iface br0 inet static
bridge_ports eth1
bridge_ports eth2
bridge_fd 0
bridge_maxwait 0
address 192.168.1.1
netmask 255.255.255.0
<emphasis role="bold">post-up /sbin/brctl hairpin br0 eth1 on</emphasis></programlisting>
<emphasis role="bold">post-up /sbin/brctl hairpin br0 eth2 on</emphasis></programlisting>
</listitem>
<listitem>
@ -957,10 +958,10 @@ iface br0 inet static
</listitem>
<listitem>
<para>Be sure that all traffic going out of eth1 has the correct
<para>Be sure that all traffic going out of eth2 has the correct
MAC address.</para>
<programlisting>ebtables -t nat -A POSTROUTING -o eth1 -j snat --to-source <emphasis>br0-MAC-address</emphasis> </programlisting>
<programlisting>ebtables -t nat -A POSTROUTING -o eth2 -j snat --to-source <emphasis>br0-MAC-address</emphasis> </programlisting>
<para>where br0-MAC-address is the MAC address of br0.</para>
@ -968,7 +969,7 @@ iface br0 inet static
executes the above command.</para>
<programlisting>if [ $(ebtables -t nat -L POSTROUTING | wc -l) -lt 4 ]; then
<emphasis role="bold">ebtables -t nat -A POSTROUTING -o eth1 -j snat --to-source 0:19:21:d0:61:65</emphasis>
<emphasis role="bold">ebtables -t nat -A POSTROUTING -o eth2 -j snat --to-source 0:19:21:d0:61:65</emphasis>
fi</programlisting>
</listitem>
</orderedlist>
@ -998,6 +999,12 @@ fi</programlisting>
url="manpages/shorewall-interfaces.html"><filename>/etc/shorewall/interfaces</filename></ulink>
to implement blacklisting by destination IP address.</para>
</note>
<note>
<para>Beginning with Shorewall 4.4.26, you can use <ulink
url="manpages/shorewall-blrules.html">/etc/shorewall/blrules</ulink>
to implement arbitrary blacklist rules.</para>
</note>
</section>
<section id="faq84">