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<p><span style="mso-fareast-language:EN-US">Shankar,</span></p>
<p><span style="mso-fareast-language:EN-US">Can you share what you
did to get this to work? This functionality isn't commonly used
from what I have observed, so the more working examples the
community has, the better!</span></p>
<p><span style="mso-fareast-language:EN-US">Thank you<br>
Steve<br>
</span></p>
<div class="moz-cite-prefix">On 2/18/2025 1:17 AM, Shankar Pramanik
wrote:<br>
</div>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi
Peter,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Apologies,
I should’ve updated earlier. I had missed something during
my testing and it appeared to me that things weren’t working
as expected.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I
spent some more time on this, and things do work as expected
in the 3.35.1 release.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Thank
you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Shankar.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US"
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
lang="EN-US"
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
syslog-ng <a class="moz-txt-link-rfc2396E" href="mailto:syslog-ng-bounces@lists.balabit.hu"><syslog-ng-bounces@lists.balabit.hu></a>
<b>On Behalf Of </b>Peter Czanik (pczanik)<br>
<b>Sent:</b> 18 February 2025 11:29<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:syslog-ng@lists.balabit.hu">syslog-ng@lists.balabit.hu</a><br>
<b>Cc:</b> Pritam Pal Singh <a class="moz-txt-link-rfc2396E" href="mailto:singhp@infoblox.com"><singhp@infoblox.com></a>; M
P Singh <a class="moz-txt-link-rfc2396E" href="mailto:msingh3@infoblox.com"><msingh3@infoblox.com></a>; Vijaya Kumar Mukka
<a class="moz-txt-link-rfc2396E" href="mailto:vmukka@infoblox.com"><vmukka@infoblox.com></a>; Patrick McEvoy
<a class="moz-txt-link-rfc2396E" href="mailto:pmcevoy@infoblox.com"><pmcevoy@infoblox.com></a>; Kevin Sheehan
<a class="moz-txt-link-rfc2396E" href="mailto:ksheehan@infoblox.com"><ksheehan@infoblox.com></a>; Michael Winslow
<a class="moz-txt-link-rfc2396E" href="mailto:mwinslow@infoblox.com"><mwinslow@infoblox.com></a><br>
<b>Subject:</b> Re: [syslog-ng] CRL handling in syslog<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span
style="font-size:1.0pt;color:white">Hi Shankar, 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.</span><span
style="font-size:1.0pt;font-family:"Arial",sans-serif;color:white"> </span><span
style="font-size:1.0pt;color:white">8.</span><span
style="font-size:1.0pt;font-family:"Arial",sans-serif;color:white"> </span><span
style="font-size:1.0pt;color:white">1 is where development
happens, and where we can fix it, if there is a problem.
Peter Peter Czanik (CzP)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span
style="font-size:1.0pt;color:white">ZjQcmQRYFpfptBannerStart<o:p></o:p></span></p>
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<p class="MsoNormal"
style="line-height:15.0pt"><b><span
style="font-size:10.5pt;font-family:"Arial",sans-serif;color:black">This
Message Is From an External Sender
<o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td style="padding:0cm 6.0pt 3.0pt 6.0pt">
<p class="MsoNormal"
style="line-height:12.0pt"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">This
message came from outside your
organization.
<o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
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</table>
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<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span
style="font-size:1.0pt;color:white">ZjQcmQRYFpfptBannerEnd<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:black">Hi Shankar,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:black">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.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:black">Peter<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
</div>
<div id="Signature">
<div>
<p class="MsoNormal"><span
style="font-family:"Calibri",sans-serif;color:black">Peter
Czanik (CzP) <<a
href="mailto:peter.czanik@oneidentity.com"
moz-do-not-send="true" class="moz-txt-link-freetext">peter.czanik@oneidentity.com</a>><br>
Balabit (a OneIdentity company) / syslog-ng upstream<br>
<a
href="https://urldefense.com/v3/__https:/syslog-ng.com/community/__;!!JYsgTRAg6ZQ!Nmv0DhXOImbcEJRXZo7LX7qoYkIs0jJtWLSDmavO0YTRu0MX0PlFWVOAbAPLVObSzM4igJ8by9VdYP9FeoK-Tr6bhOcU$"
target="_blank" moz-do-not-send="true">https://syslog-ng.com/community/</a><br>
<a
href="https://urldefense.com/v3/__https:/twitter.com/PCzanik__;!!JYsgTRAg6ZQ!Nmv0DhXOImbcEJRXZo7LX7qoYkIs0jJtWLSDmavO0YTRu0MX0PlFWVOAbAPLVObSzM4igJ8by9VdYP9FeoK-Tus5c2l9$"
target="_blank" moz-do-not-send="true">https://twitter.com/PCzanik</a><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="98%" align="center">
</div>
<div id="divRplyFwdMsg">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">
syslog-ng <<a
href="mailto:syslog-ng-bounces@lists.balabit.hu"
moz-do-not-send="true" class="moz-txt-link-freetext">syslog-ng-bounces@lists.balabit.hu</a>>
on behalf of Shankar Pramanik <<a
href="mailto:spramanik@infoblox.com"
moz-do-not-send="true" class="moz-txt-link-freetext">spramanik@infoblox.com</a>><br>
<b>Sent:</b> Friday, February 14, 2025 08:04<br>
<b>To:</b> <a href="mailto:syslog-ng@lists.balabit.hu"
moz-do-not-send="true" class="moz-txt-link-freetext">syslog-ng@lists.balabit.hu</a>
<<a href="mailto:syslog-ng@lists.balabit.hu"
moz-do-not-send="true" class="moz-txt-link-freetext">syslog-ng@lists.balabit.hu</a>><br>
<b>Cc:</b> Pritam Pal Singh <<a
href="mailto:singhp@infoblox.com" moz-do-not-send="true"
class="moz-txt-link-freetext">singhp@infoblox.com</a>>;
M P Singh <<a href="mailto:msingh3@infoblox.com"
moz-do-not-send="true" class="moz-txt-link-freetext">msingh3@infoblox.com</a>>;
Vijaya Kumar Mukka <<a
href="mailto:vmukka@infoblox.com" moz-do-not-send="true"
class="moz-txt-link-freetext">vmukka@infoblox.com</a>>;
Patrick McEvoy <<a href="mailto:pmcevoy@infoblox.com"
moz-do-not-send="true" class="moz-txt-link-freetext">pmcevoy@infoblox.com</a>>;
Kevin Sheehan <<a href="mailto:ksheehan@infoblox.com"
moz-do-not-send="true" class="moz-txt-link-freetext">ksheehan@infoblox.com</a>>;
Michael Winslow <<a href="mailto:mwinslow@infoblox.com"
moz-do-not-send="true" class="moz-txt-link-freetext">mwinslow@infoblox.com</a>><br>
<b>Subject:</b> [syslog-ng] CRL handling in syslog</span>
<o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
</div>
<div>
<div
style="border:solid #9C6500 1.0pt;padding:2.0pt 2.0pt 2.0pt 2.0pt">
<p class="MsoNormal"
style="line-height:12.0pt;background:#FFEB9C"><b><span
style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#9C6500">CAUTION:</span></b><span
style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:black">
This email originated from outside of the organization.
Do not follow guidance, click links, or open attachments
unless you recognize the sender and know the content is
safe.<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">I’ve configured syslog-ng 3.35.1 to
use CRLs but things aren’t working as expected. This is
what I’ve done :
<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="xmsolistparagraph"
style="margin-bottom:12.0pt;margin-left:0cm;mso-list:l0 level1 lfo1">
Create a self-signed CA and use it to sign a server
certificate. The server certificate has a CRL
distribution point in it.<o:p></o:p></li>
<li class="xmsolistparagraph"
style="margin-bottom:12.0pt;margin-left:0cm;mso-list:l0 level1 lfo1">
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.<o:p></o:p></li>
<li class="xmsolistparagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1">Configure
ca-dir and crl-dir in the client’s syslog config.
Configure the client to connect to the remote syslog
server.<o:p></o:p></li>
</ol>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">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.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">Is there anything that I’m missing ?
Any pointers will be appreciated. I can provide
additional details of my setup if needed.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">Thanks!<o:p></o:p></p>
<p class="xmsonormal">Shankar.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
</div>
</div>
</div>
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<pre wrap="" class="moz-quote-pre">______________________________________________________________________________
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</blockquote>
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