Find Out If My DNS Server Free From DNS Cache Poisoning Bug Or Not

Posted on in Categories , , , , , , , , , , , , last updated July 16, 2008

How do I verify that my ISP or my own recursive resolvers are free from DNS cache poisoning bug that is promised full disclosure of the flaw by Dan on August 7 at the Black Hat conference? How do I test my dns server for DNS cache pollution or DNS Cache Poisoning bug?

axfr-get: fatal: unable to parse AXFR results: protocol error and Solution

Posted on in Categories , , , , , , , , , , , , last updated July 5, 2009

I‘m trying to get data (AXFR query) from master tinydns server to secondary DNS server using tcpclient as follows:
tcpclient -v a.ns.example.com 53 axfr-get example.com example.com example.com.tmp

But I’m getting an error which read as follows:

>axfr-get: fatal: unable to parse AXFR results: protocol error

How do I fix this problem?

How To Set Caching DNS Server

Posted on in Categories , , , , , , , , , , , , , last updated June 16, 2008

How do I set caching dns server to speed up dns lookup for my LAN (500 PC)? The DNS lookups creating a lot of network activity. There are a few times when this causes performance issues. How do I configure caching dns under Debian Linux?