DNS server behind ADSL router?

[batence]

Hello folks,
this summer (while I work on the sea) my mom change the home ISP with another (because a giveway of big screen LCD television - just some promo). So now my internet comes from ADSL router with range of dynamic but real ip-s. So I slove the problem with dymanic IP's, but can't slove problem with my server behind the router. This is DNS server, allready worked before with no problems. But now I have some difficulties, server runs but domains can't bing right.
So I shared/opened port 53, wich I know is used by DNS, but the problem still here? Some advices guys?
ps. I run on CentOS 6.6

 

[Darren Hale]

Welcome to the forums.

 

[batence]

Welcome to the forums.

Thank you!

 

[asdqwe]

IMHO, This should be looked at / configured from the ADSL router, ie Static IP and Port mapping and then forwarding to/from server behind the ADSL router. Also not clear what kind of problem you are having. Reaching the DNS server from the internet?

 

[batence]

Yes, Just want to know witch ports to open? Only 53?

 

[VitalkaDrug]

Yes, Just want to know witch ports to open? Only 53?

Yes, UDP:53 is enough to DNS working. TCP:53 can be used to transfer zone between master and slave DNS servers, but it doesn't used to name resolution.