Ok so let me know if I got it right !
I connect the box to my LAN, the router gives the box an IP, lets say 192.168.1.7.
I go to dyndns and create a free host name that point to my router internet adress right ? Not the internal one but the Internet one !
I install CentOs and here http://images.howtoforge.com/images/...tos_5.1/10.png
I put 192.168.1.7, the internal IP adress given by the router via DHCP to server, and 255.255.255.0, the netmask of my LAN then here http://images.howtoforge.com/images/...tos_5.1/11.png
I put the dyndns hostname, and in Gateway I put the router's adress, that 192.168.1.254 but what do I put in Primary and Secondary DNS fields ? The DNS IPs used by the router ?