Security Basics mailing list archives

Re: Wierd named log..


From: blade- <blade- () crytec net>
Date: Tue, 17 Feb 2004 10:03:02 +1100

I had this to and got help off the bind mailing list, here is the responce:

Just an addition: I've seen the same errors on our servers and I =
wondered where these request come from. Upon stracing 'named' I found =
out that it spits out these warnings when trying to look up anything =
from 'relays.monkeys.com', a now defunct DNS based black list.

Evidently they tried to blackhole all dnsbl queries to their db to make =
people stop using their defunct service:

------
# dig @66.60.159.24 relays.monkeys.com NS              =20

relays.monkeys.com.     86400   IN      NS      =
bogus-maximus.monkeys.com.

;; ADDITIONAL SECTION:
bogus-maximus.monkeys.com. 86400 IN     A       244.254.254.254
------

They changed the NS record to this bogus IP recently, that's why people =
start seeing these errors.

Of cource, as Mark pointed out, the right solutions is to filter =
240.0.0.0/4 entirely. If you cannot filter for some reason then you =
still could add "relays.monkeys.com" as a primary zone with no data =
(except SOA + NS) in it and your problems are gone


John Pennington wrote:

In-Reply-To: <00c301c3f1b4$3239ec50$0201000a@wlsn002>


I just noticed today a strange msg that keeps showing up in my log files,
that only started today, but is constantly happening.. any info you could
give me would be greatly apreciated :)

Here is the snip from the log..

Feb 12 14:51:51 ns1 named[3496]: socket.c:1100: unexpected error:
Feb 12 14:51:51 ns1 named[3496]: internal_send: 244.254.254.254#53: Invalid
argument
Feb 12 14:51:52 ns1 named[3496]: socket.c:1100: unexpected error:
Feb 12 14:51:52 ns1 named[3496]: internal_send: 244.254.254.254#53: Invalid
argument
Feb 12 14:51:52 ns1 named[3496]: socket.c:1100: unexpected error:
Feb 12 14:51:52 ns1 named[3496]: internal_send: 244.254.254.254#53: Invalid
argument

~Chris~

Upon checking our servers, I find all our four servers are recording this error too, only in the last few days

--
JP

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