Many people I know run a dedicated server to run web-, DNS- and mail servers. In this article I’ll show you how to bring IPv6 to your server. The next part will concentrate on enabling IPv6 for different services like web and mail. As operating system I’ll concentrate on Debian GNU/Linux. I’ll also describe only the service I use: BIND9, Apache2, OpenSSH, Postfix and Dovecot.
If your no familar with IPv6 you should first learn the basics: http://en.wikipedia.org/wiki/IPv6
iptables will not filter IPv6 packets. For IPv6 you’ll have to use
ip6tables. So if you activate IPv6 on a host without configuring your services correctly and / or setting up
ip6tables rules you might have some serious security problems.
You should also think before blindly following what I’m writing. I maybe wrong and you might screw up your whole serer.