CentOS +Bind (possible Server Atack)

Hi

Got a tweet to say my web server was down this morning, the VPS shows the server as down so I hit the power and it was back up quickly.

I had a dig thought the logs (I'm not a *nix expert so bear with me) the /var/log/messages were full of these...

Aug  7 03:51:52 MY-HOSTNAME named[490]: error (unexpected RCODE REFUSED) resolving 'lalka.com.ru/ANY/IN': 77.222.51.250#53

Looks like some kind of attack? What's do I need to change or add to my BIND server to mitigate this?
LVL 58
Pete LongTechnical ConsultantAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Pete LongTechnical ConsultantAuthor Commented:
Some reading makes me think I've been used in a DNS amplification attack because my DNS server has recursion enabled.

Reading.................
0
Pete LongTechnical ConsultantAuthor Commented:
BIND recursion disabled an tested - I will post full instructions shortly...............

PL
0
Pete LongTechnical ConsultantAuthor Commented:
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
DNS

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.