named query (cache) denied

named query (cache) denied

Postby stephen » Fri Feb 27, 2009 10:21 pm

errors from /var/logged/messages
saying
Code: Select all
Feb 27 22:13:42 ecs03 named[1623]: client 62.109.4.89#31742: query (cache) './NS/IN' denied


i looked up this ipaddress
http://www.ip-adress.com/whois/62.109.4.89
IP address: 62.109.4.89
Host to this IP: invest-pool.ru [whois]
Country: ip address flag Luxembourg

see this site for an explanation of query (cache) denied message
http://www.reedmedia.net/misc/dns/errors.html
query (cache) denied

Aug 31 01:53:56 antelope named[157]: client 207.46.150.16#36789: query (cache)
denied

In this case, the server was supposed to be authoritative, but named was not configured as a slave (or master) for the zone. (Notice that the record asked about was not logged.) Some client resolvers give up when it didn't give an answer (and didn't try the other nameservers).


to block this site I added these lines to my iptables firewall
-A INPUT -s 62.109.4.89/32 -p tcp -m tcp --dport 53 -j REJECT
-A INPUT -s 62.109.4.89/32 -p udp -m udp --dport 53 -j REJECT
stephen
 
Posts: 507
Joined: Thu Feb 09, 2006 9:37 am
Location: Brisbane

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