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81 lines
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81 lines
4.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head>
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<meta http-equiv="Content-Language" content="en">
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<title>Plain TCP Syslog Input Module (imptcp)</title></head>
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<body>
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<a href="rsyslog_conf_modules.html">back</a>
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<h1>Plain TCP Syslog Input Module</h1>
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<p><b>Module Name: imptcp</b></p>
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<p><b>Available since: </b>4.7.3+, 5.5.8+
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<p><b>Author: </b>Rainer Gerhards
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<rgerhards@adiscon.com></p>
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<p><b>Description</b>:</p>
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<p>Provides the ability to receive syslog messages via plain TCP syslog.
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This is a specialised input plugin tailored for high performance on Linux. It will
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probably not run on any other platform. Also, it does no provide TLS services.
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Encryption can be provided by using <a href="rsyslog_stunnel.html">stunnel</a>.
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<p>This module has no limit on the number of listeners and sessions that can be used.
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<p>Multiple receivers may be configured by
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specifying $InputPTCPServerRun multiple times.
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</p>
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<p><b>Configuration Directives</b>:</p>
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<p>This plugin has config directives similar named as imtcp, but they all have <b>P</b>TCP in
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their name instead of just TCP. Note that only a subset of the parameters are supported.
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<ul>
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<li>$InputPTCPServerAddtlFrameDelimiter <Delimiter><br>
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This directive permits to specify an additional frame delimiter for plain tcp syslog.
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The industry-standard specifies using the LF character as frame delimiter. Some vendors,
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notable Juniper in their NetScreen products, use an invalid frame delimiter, in Juniper's
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case the NUL character. This directive permits to specify the ASCII value of the delimiter
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in question. Please note that this does not guarantee that all wrong implementations can
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be cured with this directive. It is not even a sure fix with all versions of NetScreen,
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as I suggest the NUL character is the effect of a (common) coding error and thus will
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probably go away at some time in the future. But for the time being, the value 0 can
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probably be used to make rsyslog handle NetScreen's invalid syslog/tcp framing.
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For additional information, see this
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<a href="http://kb.monitorware.com/problem-with-netscreen-log-t1652.html">forum thread</a>.
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<br><b>If this doesn't work for you, please do not blame the rsyslog team. Instead file
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a bug report with Juniper!</b>
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<br>Note that a similar, but worse, issue exists with Cisco's IOS implementation. They do
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not use any framing at all. This is confirmed from Cisco's side, but there seems to be
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very limited interest in fixing this issue. This directive <b>can not</b> fix the Cisco bug.
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That would require much more code changes, which I was unable to do so far. Full details
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can be found at the <a href="http://www.rsyslog.com/Article321.phtml">Cisco tcp syslog anomaly</a>
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page.
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<li>$InputPTCPServerNotifyOnConnectionClose [on/<b>off</b>]<br>
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instructs imptcp to emit a message if the remote peer closes a connection.<br>
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<li>$InputPTCPServerRun <port><br>
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Starts a TCP server on selected port</li>
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<li>$InputPTCPServerInputName <name><br>
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Sets a name for the inputname property. If no name is set "imptcp" is used by default. Setting a
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name is not strictly necessary, but can be useful to apply filtering based on which input
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the message was received from.
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<li>$InputPTCPServerBindRuleset <name><br>
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Binds specified ruleset to next server defined.
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<li>$InputPTCPServerListenIP <name><br>
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On multi-homed machines, specifies to which local address the next listerner should
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be bound.
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</ul>
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<b>Caveats/Known Bugs:</b>
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<ul>
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<li>module always binds to all interfaces</li>
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</ul>
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<p><b>Sample:</b></p>
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<p>This sets up a TCP server on port 514:<br>
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</p>
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<textarea rows="15" cols="60">$ModLoad imptcp #
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needs to be done just once
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$InputPTCPServerRun 514
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</textarea>
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<p>[<a href="rsyslog_conf.html">rsyslog.conf overview</a>]
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[<a href="manual.html">manual index</a>] [<a href="http://www.rsyslog.com/">rsyslog site</a>]</p>
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<p><font size="2">This documentation is part of the
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<a href="http://www.rsyslog.com/">rsyslog</a>
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project.<br>
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Copyright © 2010 by <a href="http://www.gerhards.net/rainer">Rainer
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Gerhards</a> and
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<a href="http://www.adiscon.com/">Adiscon</a>.
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Released under the GNU GPL version 3 or higher.</font></p>
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</body></html>
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