Helping to stop DDoS - detecting DNS recursion configuration issues

Friday, 11 August 2006, 10:33 AM EST

Recently, Tenable was asked about detecting DNS servers that were configured to respond to DNS "recursion" queries. The issue is that a remote attacker could spoof a recursive DNS query with a source address of a network they wish to cause a denial of service for. The attacker spoofs a query with a small payload and causes the DNS server to reply with much more data. This floods the target network with answers to questions it never asked for.

At the Tenable blog.

[ Read more ]




Spotlight

Patching: The least understood line of defense

Posted on 29 August 2014.  |  How many end users, indeed how many IT pros, truly get patching? Sure, many of us see Windows install updates when we shut down our PC and think all is well. Itís not.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  

DON'T
MISS

Wed, Sep 3rd
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //