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Old 02-01-2018, 02:10 PM   #1
pradeepspa
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Rsyslog-Flow Control


Folks,

I am setting up syslog server (centos) which is suppose to lof messages from the cisco box (A10). I configured everything and was looking the packet capture on the syslog server on port 514 and I see packets coming in but not getting logged in "/var/log/messages" (that is the location I gave in rsyslog.conf). After hours of digging, I found there is no route on syslog server to reach the cisco box. Therefore, I added the route and I see logs in the desired folder.

What I dont understand is, why syslog server needs to reach the cisco box to make it work since being an UDP traffic? I though one way communication is enough for syslog to work. Please correct me if my logic is not correct.
 
Old 02-02-2018, 07:52 AM   #2
TB0ne
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Quote:
Originally Posted by pradeepspa View Post
Folks,
I am setting up syslog server (centos) which is suppose to lof messages from the cisco box (A10). I configured everything and was looking the packet capture on the syslog server on port 514 and I see packets coming in but not getting logged in "/var/log/messages" (that is the location I gave in rsyslog.conf). After hours of digging, I found there is no route on syslog server to reach the cisco box. Therefore, I added the route and I see logs in the desired folder.

What I dont understand is, why syslog server needs to reach the cisco box to make it work since being an UDP traffic? I though one way communication is enough for syslog to work. Please correct me if my logic is not correct.
Because a client-server program needs for BOTH to talk to each other. And a network protocol won't work AT ALL if you don't configure networking (obviously enough):
https://en.wikipedia.org/wiki/Syslog
https://en.wikipedia.org/wiki/Client...93server_model
 
Old 02-02-2018, 12:43 PM   #3
pradeepspa
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I understand client-server should have communication but just considering its udp thought one way communication would work. Anyways thanks you.
 
  


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