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Add FAQ entry for DNAT/REDIRECT logging

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@3408 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep 2006-01-30 18:10:03 +00:00
parent ba1791ffa8
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1 changed files with 22 additions and 9 deletions
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31
Shorewall-docs2/FAQ.xml
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@ -17,7 +17,7 @@
</author>
</authorgroup>
<pubdate>2005-01-16</pubdate>
<pubdate>2006-01-30</pubdate>
<copyright>
<year>2001-2006</year>
@ -1214,6 +1214,27 @@ LOGBURST=""</programlisting>
your firewall to log and drop the packet out of the rfc1918 chain
because the source IP is reserved by RFC 1918.</para>
</section>
<section id="faq52">
<title>(FAQ 52) When I blacklist an IP address with "shorewall drop
www.xxx.yyy.zzz", why does my log still show REDIRECT and DNAT entries
from that address?</title>
<para>I blacklisted the address 130.252.100.59 using <command>shorewall
drop 130.252.100.59</command> but I am still seeing these log
messages:</para>
<programlisting>Jan 30 15:38:34 server Shorewall:net_dnat:REDIRECT:IN=eth1 OUT= MAC=00:4f:4e:14:97:8e:00:01:5c:23:24:cc:08:00
SRC=130.252.100.59 DST=206.124.146.176 LEN=64 TOS=0x00 PREC=0x00 TTL=43 ID=42444 DF
PROTO=TCP SPT=2215 DPT=139 WINDOW=53760 RES=0x00 SYN URGP=0</programlisting>
<para><emphasis role="bold">Answer</emphasis>: Please refer to the
<ulink url="NetfilterOverview.html">Shorewall Netfilter
Documentation</ulink>. Logging of REDIRECT and DNAT rules occurs in the
nat table's PREROUTING chain where the original destination IP address
is still available. Blacklisting occurs out of the filter table's INPUT
and FORWARD chains which aren't traversed until later.</para>
</section>
</section>
<section>
@ -1937,13 +1958,5 @@ Shorewall has detected the following iptables/netfilter capabilities:
Raw Table: Available
gateway:~#</programlisting>
</section>
<section id="faq52">
<title>(FAQ 52) How do I Configure Shorewall to work with
Snort-Inline?</title>
<para><emphasis role="bold">Answer</emphasis>: Please see <ulink
url="http://www.catherders.com/tikiwiki-1.9.1/tiki-read_article.php?articleId=47">http://www.catherders.com/tikiwiki-1.9.1/tiki-read_article.php?articleId=47</ulink></para>
</section>
</section>
</article>