Connection Attempt to UDP Messages

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Connection Attempt to UDP Messages

Postby gtac » Mon Jan 12, 2009 4:13 am

Hi all, not sure if this is the right subforum, but I figured I'd ask.

I'm getting 1000's of messages on my system console. They consist of:

Code: Select all
Connection attempt to UDP 192.168.2.101:514 from 192.168.2.62:1053


192.168.2.101 is the internal IP of my BSD server, and 192.168.2.62 is the internal IP of my Mail server.

My question is why is this happening, and what can I do to correct it? Thank you.
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Re: Connection Attempt to UDP Messages

Postby rgerhards » Mon Jan 12, 2009 8:53 am

This is not rsyslog-specific, but let me give it a try. It looks like a firewall rule logs incoming traffic. Port 514/udp usually is syslog.

HTH
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Re: Connection Attempt to UDP Messages

Postby gtac » Tue Jan 13, 2009 2:49 am

Thanks for the reply rgerhards. Is there something I can add in the rsyslog.conf to prevent this?
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Re: Connection Attempt to UDP Messages

Postby rgerhards » Tue Jan 13, 2009 8:03 am

Well, it depends on what you mean with "prevent". Do you want to stop this message at all? Or do you just want to discard it? The later you can do with a filter and the discard action.
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Re: Connection Attempt to UDP Messages

Postby gtac » Wed Jan 14, 2009 2:54 am

Either or will work for me. I would just like to get these off of my console.
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Re: Connection Attempt to UDP Messages

Postby rgerhards » Wed Jan 14, 2009 7:26 am

OK, than let's discard them. You need to look up the exact syntax in the doc, but it is along these lines:

Code: Select all
:msg,contains,"Connection attempt to UDP" ~


HTH,
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Re: Connection Attempt to UDP Messages

Postby gtac » Thu Jan 15, 2009 4:29 am

Thanks rgerhards. I'm trying to find the exact syntax, I'll let you know what I come up with.

And that goes right in the rsyslog.conf configuration file correct?
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Re: Connection Attempt to UDP Messages

Postby rgerhards » Thu Jan 15, 2009 7:23 am

gtac wrote:And that goes right in the rsyslog.conf configuration file correct?


Yes, that's right. I'd start with the syntax I suggested, chances are good it is correct.
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