<div dir="ltr"><div>hi guys,</div><div><br></div><div>this is stats:</div><div><br></div><div>destination;d_net_udp514;;a;processed;13<br>source;s_net_udp514;;a;processed;3<br>dst.syslog;d_net_udp514#0;udp,192.168.3.1:514;a;dropped;0<br>dst.syslog;d_net_udp514#0;udp,192.168.3.1:514;a;processed;10<br>dst.syslog;d_net_udp514#0;udp,192.168.3.1:514;a;stored;0</div><div><br></div><div>from debug:</div><div><br></div><div>Incoming log entry; source='s_net_udp514#0', line='<78> remote_server /usr/sbin/cron[24934]: <br> Can't bind hostname for the IP address, therefore using IP address as hostname; IP address='192.168.2.1'<br></div><div><br></div><div>Do you see anything what I do not do ?</div><div><br></div><div>Thanks.</div><div><br></div><div>Denis<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-09-28 14:02 GMT+02:00 Szalai, Attila <span dir="ltr"><<a href="mailto:Attila.Szalai@morganstanley.com" target="_blank">Attila.Szalai@morganstanley.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">Hi,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">In case of udp, the syslog source should handle receiving logs with old and the new version too. (But that is more an exception than the rule, so matching the
receiver and the sender is a good idea generaly.)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">Before anything else I would check if the logs arrive to the anonymizer host or not. The statistics can help on this. Also, if there are parsing issue, the
syslog-ng would tell this through its log.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">After that starting the syslog-ng with enabled debug logs can also help on discovering what happening with the received log.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Tahoma","sans-serif";font-size:10pt">From:</span></b><span style="font-family:"Tahoma","sans-serif";font-size:10pt"> <a href="mailto:syslog-ng-bounces@lists.balabit.hu" target="_blank">syslog-ng-bounces@lists.<wbr>balabit.hu</a> [mailto:<a href="mailto:syslog-ng-bounces@lists.balabit.hu" target="_blank">syslog-ng-bounces@<wbr>lists.balabit.hu</a>]
<b>On Behalf Of </b>Fekete, Róbert<br>
<b>Sent:</b> Wednesday, September 28, 2016 1:47 PM<br>
<b>To:</b> Syslog-ng users' and developers' mailing list<br>
<b>Subject:</b> Re: [syslog-ng] syslog-ng forwarding and processing issue<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Hi, <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">The destination on your remote server and the source on the pseudomizer host do not match: the first one uses the udp() driver (RFC3164 protocol), while the second uses the syslog() driver (RFC5424) protocol. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Change the destination driver to syslog() on the remote server. (For more possibilities, see
<a href="https://www.balabit.com/documents/syslog-ng-pe-latest-guides/en/syslog-ng-pe-guide-admin/html/concepts-things-to-consider.html" target="_blank">
https://www.balabit.com/<wbr>documents/syslog-ng-pe-latest-<wbr>guides/en/syslog-ng-pe-guide-<wbr>admin/html/concepts-things-to-<wbr>consider.html</a> )<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">HTH<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Robert<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Wed, Sep 28, 2016 at 1:17 PM, Denis Dolinský <<a href="mailto:denis.dolinsky@gmail.com" target="_blank">denis.dolinsky@gmail.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">Hi guys,<u></u><u></u></p>
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<p class="MsoNormal">I have following setup in place:<u></u><u></u></p>
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<p class="MsoNormal">remote server - 192.168.1.10<u></u><u></u></p>
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<p class="MsoNormal">pseudomizer - syslog-ng PE in client mode - 192.168.2.10<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">SIEM - 192.168.3.10<u></u><u></u></p>
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<p class="MsoNormal">So I am sending syslog logs from remote server to pseudomizer:<u></u><u></u></p>
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<p class="MsoNormal">source src { internal()};<u></u><u></u></p>
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<p class="MsoNormal">destination dst { udp ("192.168.2.10) port (514);};<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">log { source(src); destination (dst);<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">this is very old config from syslog v4<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">Then on pseudomizer - syslog-ng LTS 6.0.1 PE, I am collecting the logs, processing them - removing private data, putting pseudonyms instead and forwarding them to SIEM.<br>
<br>
source s_net_udp514 {<br>
syslog(<br>
ip(192.168.2.10)<br>
ip-protocol(4)<br>
transport("udp")<br>
so_rcvbuf(2097152)<br>
);<br>
};<br>
<br>
source src {<br>
internal();<br>
unix-dgram("/dev/log");<br>
system ();<br>
};<br>
<br>
destination d_net_udp514 {<br>
syslog ( <br>
"192.168.3.10"<br>
port(514) <br>
transport(udp)<br>
spoof_source(yes) <br>
mark_mode(periodical));};<br>
rewrite r_rewrite {<br>
subst("admin", "pseudonym000001", value("MESSAGE"), flags("global"));<br>
<br>
log {<br>
source(s_net_udp514); source (src);<br>
rewrite(r_rewrite); # do the pseudomizing<br>
destination(d_net_udp514);<br>
};<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">On SIEM device, I can see only pseudomizer internal logs (src), not processed logs from remote server.<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">Any advice ?<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">Many thanks.<u></u><u></u></p>
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<p class="MsoNormal"><span><span style="color:rgb(136,136,136)">Denis</span></span><u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt"><br>
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<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<br>
<br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Ing. Denis Dolinský<br>
<a href="mailto:denis.dolinsky@gmail.com" target="_blank">denis.dolinsky@gmail.com</a><br>
private cell: <u>+421 907 530711</u></div>
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