Need some help but don't know what exactly

[DaRKNeSS666NL]

Okee here is my problem..

I have my server setup, and thats working fine. I have an acount at dyndns for my changing ip adress ( it stays almost the same). My router (asus) has the ability to update my changed ip adress automaticaly.

So far no problem.

The server has at this time 4 sites on it but every time my ip changes (not very often gladly) I lose 3 of my sites they are pointing to the wrong ip's of course.

First question can I put those 3 sites on my own dns server in the ispconfig program?

So that if my ip is changed, my router thus my server are getting there new ip adress automaticly. Than allso the ip adress of the dnsserver (its my sever) will change automaticly, and therefore my other sites will stay online.

I know I am getting way over my head here with the nameserver thing and mabey I see things the wrong way.

I have searched the forums already and know sofar
-I must open port 53
-I need 2 dns servers ( can it be done by one? in the beginning)
-for safety reasens I must put recursion.no into named .conf.master

Or must I use a little program like ddclient? and take more acounts at dyndns

Many questins I know so TIA for reading the whole story.