shorewall_code/Shorewall-docs/ports.htm
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<title>Shorewall Port Information</title>
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<h1 align="center"><font color="#ffffff">Ports required for Various
Services/Applications</font></h1>
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<p>In addition to those applications described in <a
href="Documentation.htm">the /etc/shorewall/rules documentation</a>, here
are some other services/applications that you may need to configure
your firewall to accommodate.</p>
<p>NTP (Network Time Protocol)</p>
<blockquote>
<p>UDP Port 123</p>
</blockquote>
<p>rdate</p>
<blockquote>
<p>TCP Port 37</p>
</blockquote>
<p>UseNet (NNTP)</p>
<blockquote>
<p>TCP Port 119</p>
</blockquote>
<p>DNS</p>
<blockquote>
<p>UDP Port 53. If you are configuring a DNS client, you will probably
want to open TCP Port 53 as well.<br>
If you are configuring a server, only open TCP Port 53 if
you will return long replies to queries or if you need to enable ZONE
transfers. In the latter case, be sure that your server is properly
configured.</p>
</blockquote>
<p>ICQ   </p>
<blockquote>
<p>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.</p>
</blockquote>
<p>PPTP</p>
<blockquote>
<p><u>Protocol</u> 47 (NOT <u>port</u> 47) and TCP Port 1723 (<a
href="PPTP.htm">Lots more information here</a>).</p>
</blockquote>
<p>IPSEC</p>
<blockquote>
<p><u>Protocols</u> 50 and 51 (NOT <u>ports</u> 50 and 51) and UDP Port
500. These should be opened in both directions (Lots more information
<a href="IPSEC.htm">here</a> and <a href="VPN.htm">here</a>).</p>
</blockquote>
<p>SMTP (Email)</p>
<blockquote>
<p> TCP Port 25.</p>
</blockquote>
<p>RealPlayer<br>
</p>
<blockquote>
<p>UDP Port 6790 inbound<br>
</p>
</blockquote>
<p>POP3</p>
<blockquote>
<p>TCP Port 110 (Secure = TCP Port 995)<br>
</p>
</blockquote>
<p>IMAP<br>
</p>
<blockquote>TCP Port 143 (Secure = TCP Port 993)<br>
</blockquote>
<p>TELNET</p>
<blockquote>
<p>TCP Port 23.</p>
</blockquote>
<p>SSH</p>
<blockquote>
<p>TCP Port 22.</p>
</blockquote>
<p>Auth (identd)</p>
<blockquote>
<p>TCP Port 113</p>
</blockquote>
<p>Web Access</p>
<blockquote>
<p>TCP Ports 80 and 443.</p>
</blockquote>
<p>FTP<br>
</p>
<blockquote>
<p>TCP port 21 plus <a href="FTP.html">look here for much more information</a>.<br>
</p>
</blockquote>
<p>SMB/NMB (Samba/Windows Browsing/File Sharing)</p>
<blockquote> </blockquote>
<blockquote>
<p>TCP Ports 137, 139 and 445.<br>
UDP Ports 137-139.<br>
<br>
Also, <a href="samba.htm">see this page</a>.</p>
</blockquote>
<p>Traceroute</p>
<blockquote>
<p>UDP ports 33434 through 33434+<i>&lt;max number of hops&gt;</i>-1<br>
ICMP type 8 ('ping')<br>
</p>
</blockquote>
<p>NFS<br>
</p>
<blockquote>
<p>I personally use the following rules for opening access from zone z1
to a server with IP address a.b.c.d in zone z2:<br>
</p>
<pre>ACCEPT z1 z2:a.b.c.d udp 111<br>ACCEPT z1 z2:a.b.c.d tcp 111<br>ACCEPT z1 z2:a.b.c.d udp 2049<br>ACCEPT z1 z2:a.b.c.d udp 32700:<br></pre>
</blockquote>
<blockquote>
<p>Note that my rules only cover NFS using UDP (the normal case). There
is lots of additional information at  <a
href="http://nfs.sourceforge.net/nfs-howto/security.html"> http://nfs.sourceforge.net/nfs-howto/security.html</a></p>
</blockquote>
<p>VNC<br>
</p>
<blockquote>
<p>TCP port 5900 + &lt;display number&gt;</p>
</blockquote>
<p>Didn't find what you are looking for -- have you looked in your own /etc/services
file? </p>
<p>Still looking? Try <a
href="http://www.networkice.com/advice/Exploits/Ports"> http://www.networkice.com/advice/Exploits/Ports</a></p>
<p><font size="2">Last updated 7/30/2003 - </font><font size="2"> <a
href="support.htm">Tom Eastep</a></font> </p>
<a href="copyright.htm"><font size="2">Copyright</font> ©
<font size="2">2001, 2002, 2003 Thomas M. Eastep.</font></a><br>
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