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Hi Shankar,</div>
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Could you test this on the latest syslog-ng release? Note that I never used this syslog-ng feature. I'm asking you this, as 4.8.1 is where development happens, and where we can fix it, if there is a problem.</div>
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Peter</div>
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Peter Czanik (CzP) <peter.czanik@oneidentity.com><br>
Balabit (a OneIdentity company) / syslog-ng upstream<br>
<a href="https://syslog-ng.com/community/" target="_blank">https://syslog-ng.com/<wbr>community/</a><br>
<a href="https://twitter.com/PCzanik" target="_blank">https://twitter.com/PCzanik</a></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> syslog-ng <syslog-ng-bounces@lists.balabit.hu> on behalf of Shankar Pramanik <spramanik@infoblox.com><br>
<b>Sent:</b> Friday, February 14, 2025 08:04<br>
<b>To:</b> syslog-ng@lists.balabit.hu <syslog-ng@lists.balabit.hu><br>
<b>Cc:</b> Pritam Pal Singh <singhp@infoblox.com>; M P Singh <msingh3@infoblox.com>; Vijaya Kumar Mukka <vmukka@infoblox.com>; Patrick McEvoy <pmcevoy@infoblox.com>; Kevin Sheehan <ksheehan@infoblox.com>; Michael Winslow <mwinslow@infoblox.com><br>
<b>Subject:</b> [syslog-ng] CRL handling in syslog</font>
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<p class="x_MsoNormal">I’ve configured syslog-ng 3.35.1 to use CRLs but things aren’t working as expected. This is what I’ve done :
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<li class="x_MsoListParagraph" style="margin-left:0cm">Create a self-signed CA and use it to sign a server certificate. The server certificate has a CRL distribution point in it.<br>
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</li><li class="x_MsoListParagraph" style="margin-left:0cm">Revoke the server certificate. Generate the revoked CRL and put it on the syslog client under /etc/syslog-ng/crl in PEM format. There’s a <issuer hash>.r0 link to the CRL in this directory.<br>
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</li><li class="x_MsoListParagraph" style="margin-left:0cm">Configure ca-dir and crl-dir in the client’s syslog config. Configure the client to connect to the remote syslog server.</li></ol>
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<p class="x_MsoNormal">With this setup, I’ d expect the syslog client to reject the server certificate since it’s revoked, but that doesn’t happen. The TLS handshake and subsequent communication is successful.</p>
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<p class="x_MsoNormal">Is there anything that I’m missing ? Any pointers will be appreciated. I can provide additional details of my setup if needed.</p>
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<p class="x_MsoNormal">Thanks!</p>
<p class="x_MsoNormal">Shankar.</p>
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