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shorewall_code/Shorewall-docs/ports.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<article>
<articleinfo>
<title>Ports Required for Various Services/Applications</title>
<authorgroup>
<author>
<firstname>Tom</firstname>
<surname>Eastep</surname>
</author>
</authorgroup>
<pubdate>2004-02-18</pubdate>
<copyright>
<year>2001-2002</year>
<year>2004</year>
<holder>Thomas M. Eastep</holder>
</copyright>
<legalnotice>
<para>Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version
1.2 or any later version published by the Free Software Foundation; with
no Invariant Sections, with no Front-Cover, and with no Back-Cover
Texts. A copy of the license is included in the section entitled
<quote><ulink url="GnuCopyright.htm">GNU Free Documentation License</ulink></quote>.</para>
</legalnotice>
<abstract>
<para>In addition to those applications described in the
/etc/shorewall/rules documentation, here are some other
services/applications that you may need to configure your firewall to
accommodate.</para>
</abstract>
</articleinfo>
<note>
<para>In the rules that are shown in this document, the ACTION is shown as
ACCEPT. You may need to use DNAT (see <ulink url="FAQ.htm#faq30">FAQ 30</ulink>)
or you may want DROP or REJECT if you are trying to block the application.</para>
<para>Example: You want to port forward FTP from the net to your server at
192.168.1.4 in your DMZ. The FTP section below gives you:</para>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 21</programlisting>
<para>You would code your rule as follows:</para>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
DNAT net dmz:192.168.1.4 tcp 21</programlisting>
</note>
<section>
<title>Auth (identd)</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 113</programlisting>
</section>
<section>
<title>DNS</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> udp 53
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 53</programlisting>
</section>
<section>
<title>FTP</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 21</programlisting>
<para>Look <ulink url="FTP.html">here</ulink> for much more information.</para>
</section>
<section>
<title>ICQ</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> udp 4000
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 4000:4100</programlisting>
<para>UDP Port 4000. You will also need to open a range of TCP ports which
you can specify to your ICQ client. By default, clients use 4000-4100.</para>
</section>
<section>
<title>IMAP</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 143 #Unsecure IMAP
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 993 #Secure IMAP</programlisting>
</section>
<section>
<title>IPSEC</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis> &#60;destination&#62;</emphasis> 50
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis> &#60;destination&#62;</emphasis> 51
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis> &#60;destination&#62;</emphasis> udp 500
ACCEPT <emphasis>&#60;destination&#62;</emphasis> <emphasis>&#60;source&#62;</emphasis> 50
ACCEPT <emphasis>&#60;destination&#62;</emphasis> <emphasis>&#60;source&#62;</emphasis> 51
ACCEPT <emphasis>&#60;destination&#62;</emphasis> <emphasis>&#60;source&#62;</emphasis> udp 500</programlisting>
<para>Lots more information <ulink url="IPSEC.htm">here</ulink> and <ulink
url="VPN.htm">here</ulink>.</para>
</section>
<section>
<title>NFS</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;z1&#62;</emphasis>:&#60;list of client IPs&#62; <emphasis> &#60;z2&#62;</emphasis>:a.b.c.d tcp 111
ACCEPT <emphasis>&#60;z1&#62;</emphasis>:&#60;list of client IPs&#62; <emphasis> &#60;z2&#62;</emphasis>:a.b.c.d udp</programlisting>
</section>
<section>
<title>NTP (Network Time Protocol)</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> udp 123</programlisting>
</section>
<section>
<title><trademark>PCAnywhere</trademark></title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> udp 5632
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 5631</programlisting>
</section>
<section>
<title>Pop3</title>
<para>TCP Port 110 (Secure Pop3 is TCP Port 995)</para>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 110 #Unsecure Pop3
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 995 #Secure Pop3</programlisting>
</section>
<section>
<title>PPTP</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> 47
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 1723</programlisting>
<para>Lots more information <ulink url="PPTP.htm">here</ulink> and <ulink
url="VPN.htm">here</ulink>.</para>
</section>
<section>
<title>rdate</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 37</programlisting>
</section>
<section>
<title>SSH</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 22</programlisting>
</section>
<section>
<title>SMB/NMB (Samba/Windows Browsing/File Sharing)</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis> &#60;destination&#62;</emphasis> tcp 137,139,445
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis> &#60;destination&#62;</emphasis> udp 137:139
ACCEPT <emphasis>&#60;destination&#62;</emphasis> <emphasis>&#60;source&#62;</emphasis> tcp 137,139,445
ACCEPT <emphasis>&#60;destination&#62;</emphasis> <emphasis>&#60;source&#62;</emphasis> udp 137:139</programlisting>
<para>Also, see <ulink url="samba.htm">this page</ulink>.</para>
</section>
<section>
<title>SMTP</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 25</programlisting>
</section>
<section>
<title>Telnet</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 23</programlisting>
</section>
<section>
<title>Traceroute</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> udp 33434:33443 #Good for 10 hops
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> icmp 8</programlisting>
<para>UDP traceroute uses ports 33434 through 33434+&#60;max number of
hops&#62;-1</para>
</section>
<section>
<title>Usenet (NNTP)</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 119</programlisting>
<para>TCP Port 119</para>
</section>
<section>
<title>VNC</title>
<para>Vncviewer -&#62; Vncserver is TCP port 5900 + &#60;display
number&#62;.</para>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 5901 #Display Number 1
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 5902 #Display Number 2
...</programlisting>
<para>Vncserver to Vncviewer in listen mode is TCP port 5500.</para>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 5500</programlisting>
</section>
<section>
<title>Web Access</title>
<programlisting>#ACTION SOURCE DESTINATION PROTO DEST PORT(S)
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 80 #Insecure HTTP
ACCEPT <emphasis>&#60;source&#62;</emphasis> <emphasis>&#60;destination&#62;</emphasis> tcp 443 #Secure HTTP</programlisting>
</section>
<section>
<title>Other Source of Port Information</title>
<para>Didn&#39;t find what you are looking for -- have you looked in your
own /etc/services file?</para>
<para>Still looking? Try <ulink
url="http://www.networkice.com/advice/Exploits/Ports">http://www.networkice.com/advice/Exploits/Ports</ulink></para>
</section>
<appendix>
<title>Revision History</title>
<para><revhistory><revision><revnumber>1.7</revnumber><date>2004-02-12</date><authorinitials>TE</authorinitials><revremark>Make
NFS work for everyone</revremark></revision><revision><revnumber>1.6</revnumber><date>2004-02-12</date><authorinitials>TE</authorinitials><revremark>Added
PCAnywhere</revremark></revision><revision><revnumber>1.5</revnumber><date>2004-02-05</date><authorinitials>TE</authorinitials><revremark>Added
information about VNC viewers in listen mode.</revremark></revision><revision><revnumber>1.4</revnumber><date>2004-01-26</date><authorinitials>TE</authorinitials><revremark>Correct
ICQ.</revremark></revision><revision><revnumber>1.3</revnumber><date>2004-01-04</date><authorinitials>TE</authorinitials><revremark>Alphabetize</revremark></revision><revision><revnumber>1.2</revnumber><date>2004-01-03</date><authorinitials>TE</authorinitials><revremark>Add
rules file entries.</revremark></revision><revision><revnumber>1.1</revnumber><date>2002-07-30</date><authorinitials>TE</authorinitials><revremark>Initial
version converted to Docbook XML</revremark></revision></revhistory></para>
</appendix>
</article>