mirror of
https://github.com/samhocevar/rinetd.git
synced 2024-12-28 05:40:31 +08:00
111 lines
3.7 KiB
HTML
111 lines
3.7 KiB
HTML
|
<html>
|
||
|
|
<head>
|
||
|
|
<title>RINETD(8)</title>
|
||
|
|
</head>
|
||
|
|
<body bgcolor="#FFFFF0">
|
||
|
|
<!--
|
||
|
|
Copyright (c) 1997, 1998, Thomas Boutell and Boutell.Com, Inc.
|
||
|
|
This software is released for free use under the terms of
|
||
|
|
the GNU Public License, version 2 or higher.
|
||
|
|
-->
|
||
|
|
<table>
|
||
|
|
<tr>
|
||
|
|
<th width=33% align=left>RINETD(8)
|
||
|
|
<th width=33% align=right>Unix System Manager's Manual
|
||
|
|
<th width=33% align=right>RINETD(8)
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">NAME</font>
|
||
|
|
<p>
|
||
|
|
rinetd -- internet ``redirection server''
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">SYNOPSIS</font>
|
||
|
|
<p>
|
||
|
|
<code>/usr/sbin/rinetd</code>
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">VERSION</font>
|
||
|
|
<p>
|
||
|
|
Version 0.41, 2/11/1998.
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">WHERE TO GET</font>
|
||
|
|
<p>
|
||
|
|
<a href="ftp://ftp.boutell.com/pub/boutell/rinetd/rinetd.tar.gz">By
|
||
|
|
anonymous FTP from ftp.boutell.com</a> in the subdirectory
|
||
|
|
<code>boutell/rinetd</code> as the file <code>rinetd.tar.gz</code>.
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">DESCRIPTION</font>
|
||
|
|
<p>
|
||
|
|
Redirects TCP connections from one IP address and port to another. rinetd
|
||
|
|
is a single-process server which handles any number of connections to
|
||
|
|
the address/port pairs specified in the file <code>/etc/rinetd.conf</code>.
|
||
|
|
Since rinetd runs as a single process using nonblocking I/O, it is
|
||
|
|
able to redirect a large number of connections without a severe
|
||
|
|
impact on the machine. This makes it practical to run TCP services
|
||
|
|
on machines inside an IP masquerading firewall.
|
||
|
|
<p>
|
||
|
|
rinetd should be launched at boot time, using the following syntax:
|
||
|
|
<p>
|
||
|
|
<code>/usr/sbin/rinetd</code>
|
||
|
|
<p>
|
||
|
|
The format of <code>/etc/rinetd.conf</code> is as follows:
|
||
|
|
<p>
|
||
|
|
<code>bindaddress bindport connectaddress connectport</code>
|
||
|
|
<p>
|
||
|
|
For example:
|
||
|
|
<p>
|
||
|
|
<code>206.125.69.81 80 10.1.1.2 80</code>
|
||
|
|
<p>
|
||
|
|
Would redirect all connections to port 80 of the "real" IP address
|
||
|
|
206.125.69.81, which could be a virtual interface, through
|
||
|
|
rinetd to port 80 of the address 10.1.1.2, which would typically
|
||
|
|
be a machine on the inside of a firewall which has no
|
||
|
|
direct routing to the outside world.
|
||
|
|
<p>
|
||
|
|
Service names can be specified instead of port numbers. On most systems,
|
||
|
|
service names are defined in the file /etc/services.
|
||
|
|
<p>
|
||
|
|
Both IP addresses and hostnames are accepted for
|
||
|
|
bindaddress and connectaddress.
|
||
|
|
<p>
|
||
|
|
rinetd redirects TCP connections only. There is
|
||
|
|
no support for UDP.
|
||
|
|
<p>
|
||
|
|
The kill -1 signal (SIGHUP) can be used to cause rinetd
|
||
|
|
to reload its configuration file <strong>without</strong> interrupting existing
|
||
|
|
connections (this was added in version 0.4). Under Linux\(tm the process id
|
||
|
|
is saved in the file \fI/var/run/rinetd.pid\fR
|
||
|
|
to facilitate the kill -HUP (added in version 0.41).
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">BUGS</font>
|
||
|
|
<p>
|
||
|
|
rinetd does not currently produce any log information. The
|
||
|
|
server redirected to is not able to identify the host the
|
||
|
|
client really came from. Sockets would theoretically lose
|
||
|
|
data when closed with <code>SO_LINGER</code> turned off, but in Linux
|
||
|
|
this is not the case (kernel source comments support this
|
||
|
|
belief on my part). On non-Linux platforms, alternate code
|
||
|
|
which uses a different trick to work around blocking close()
|
||
|
|
is provided, but this code is untested. The manpage
|
||
|
|
is sketchy.
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">LICENSE</font>
|
||
|
|
<p>
|
||
|
|
Copyright (c) 1997, 1998,
|
||
|
|
<a href="http://www.boutell.com/boutell">Thomas Boutell</a> and
|
||
|
|
<a href="http://www.boutell.com/">Boutell.Com, Inc.</a>
|
||
|
|
This software is released for free use under the terms of
|
||
|
|
the GNU Public License, version 2 or higher.
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">CONTACT INFORMATION</font>
|
||
|
|
<p>
|
||
|
|
See <a href="http://www.boutell.com/rinetd">the rinetd web page</a>
|
||
|
|
for the latest release.
|
||
|
|
Thomas Boutell can be reached by email:
|
||
|
|
<a href="mailto:boutell@boutell.com">boutell@boutell.com</a>
|
||
|
|
<p>
|
||
|
|
<font color="#FF8888" size="4">THANKS</font>
|
||
|
|
<p>
|
||
|
|
Thanks are due to Bill Davidsen.
|
||
|
|
|