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Is This Attack On Named
Found every day in logcheck report
boxfan




msg:3189561
 3:14 pm on Dec 15, 2006 (gmt 0)

Hello,

Almost every 4 hours when I receive my logcheck report I find entries like these:

Dec 15 07:26:05 ns named[1916]: client 201.16.18.3#4664: error sending response: host unreachable
Dec 15 07:26:05 ns named[1916]: client 201.16.18.3#4664: error sending response: host unreachable
Dec 15 07:26:05 ns named[1916]: client 201.16.18.3#4664: error sending response: host unreachable
Dec 15 07:26:44 ns last message repeated 5 times
Dec 15 07:26:44 ns last message repeated 5 times
Dec 15 07:26:44 ns last message repeated 5 times

What exactly does this mean? Is it an attack on my DNS server or someone trying to use it?

Thanks!

 

mcavic




msg:3189649
 4:20 pm on Dec 15, 2006 (gmt 0)

It's saying that someone is making a request to your server, but the reply can't get through to them. That happens sometimes due to firewall or network issues. If it's just one IP, or a few, but not everyone, then there's probably nothing you can do about it.

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