who can clarify a thing or 2 about server ip and name server ips?

Hi,

1.
So i have my server ip wich is 80.xx.xxx.xxx

for name server i ad 2 ips in Directadmin lets say 80.xx.xxx.x10
80.xx.xxx.x11

I have my server ip redirected in directadmin to my lan ip, should i also do this for the name servers? and if so should they be redirected to the same lan ip?



2.
Should all ips i add in directadmin be redirected to a lan ip?


Its a bit un clear to my since im behind a lan. if i ad ip in directadmin all of them wil conect to the same external ip.


Thanks