It has recently came to my attention that anyone can use our company's nameservers.
I recently setup my home machine to use the company's nameserver to confirm this. I was wondering if there was anyway to prevent people from using our company's NS for their personal servers ? Would the extra traffic generated cause any problems on our network that I may not be aware of ? ------------------------------------------------ Test Confirmation that our NS is open to world: | ------------------------------------------------ ----------------------- Step one: lookup name | ----------------------- mylinux machine$ whois ourdomain.com Whois Server Version 1.3 Domain names in the .com, .net, and .org domains can now be registered with many different competing registrars. Go to http://www.internic.net for detailed information. Domain Name: ournameserver.com Registrar: NETWORK SOLUTIONS, INC. Whois Server: whois.networksolutions.com Referral URL: http://www.networksolutions.com Name Server: NS1.ournameserver.net Name Server: NS2.ournameserver.net Updated Date: 27-oct-2001 ---------------------------------------------------- Step two: change /etc/resolv.conf to the following | ---------------------------------------------------- search ournameserver.com nameserver 123.123.123.123 # nameserver1 nameserver 123.123.123.134 # nameserver2 ------------------------- Step three: sample run | ------------------------- mylinux machine$ nslookup www.debian.org Server: ournameserver.com Address: 123.123.123.123 Non-authoritative answer: Name: www.debian.org Address: 198.186.203.20 mylinux machine$ ---------------------- GNU PGP public key http://www.annapolislinux.org/docs/public_key/GnuPG.txt --------------------- Ted Knab
