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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>TLS-protected syslog: recommended scenario</title>
</head>
<body>

<h1>Encrypting Syslog Traffic with TLS (SSL)</h1>
<p><small><i>Written by <a href="http://www.adiscon.com/en/people/rainer-gerhards.php">Rainer
Gerhards</a> (2008-06-17)</i></small></p>
<ul>
<li><a href="rsyslog_secure_tls.html">Overview</a>
<li><a href="tls_cert_scenario.html">Sample Scenario</a>
<li><a href="tls_cert_ca.html">Setting up the CA</a>
<li><a href="tls_cert_machine.html">Generating Machine Certificates</a>
<li><a href="tls_cert_server.html">Setting up the Central Server</a>
<li><a href="tls_cert_client.html">Setting up syslog Clients</a>
<li><a href="tls_cert_udp_relay.html">Setting up the UDP syslog relay</a>
<li><a href="tls_cert_summary.html">Wrapping it all up</a>
<li><a href="tls_cert_errmsgs.html">Frequently seen Error Messages</a>
</ul>

<h2>Overview</h2>
<p>This document describes a secure way to set up rsyslog TLS. A secure logging
environment requires more than just encrypting the transmission channel. This document
provides one possible way to create such a secure system.
<p>Rsyslog's TLS authentication can be used very flexible and thus supports a 
wide range of security policies. This section tries to give some advise on a 
scenario that works well for many environments. However, it may not be suitable 
for you - please assess you security needs before using the recommendations 
below. Do not blame us if it doesn't provide what you need ;)</p>
<p>Our policy offers these security benefits:</p>
<ul>
	<li>syslog messages are encrypted while traveling on the wire</li>
	<li>the syslog sender authenticates to the syslog receiver; thus, the 
	receiver knows who is talking to it</li>
	<li>the syslog receiver authenticates to the syslog sender; thus, the sender 
	can check if it indeed is sending to the expected receiver</li>
	<li>the mutual authentication prevents man-in-the-middle attacks</li>
</ul>
<p>Our secrity goals are achived via public/private key security. As such, it is 
vital that private keys are well protected and not accessible to third parties. 
<span style="float: left">
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