Question on opening up a port

cagspy · 07-03-2002, 03:43 PM

Hi,
I'm setting up a DNS server. The server seems to work fine from the server itself. But when I try to use it on another server I cannot.
I narrowed it down (I think) to being a problem with port 53. If I try and telnet using port 53. I get connection refused. How do I open this port up?
I tried adding a file in /etc/xinetd.d using the same syntax as telnet but changing a few things for named. This did not work. Any help would greatly be appreciated.

TruckStuff · 07-03-2002, 04:39 PM

Firewall problem? Named stratup problem? Version? Could you please be more vague? Some one might actually get what you are trying to ask.

cagspy · 07-03-2002, 04:53 PM

Right sorry about that.

Named problem. It starts up fine. However when I point my resolv.conf file (on another host (Client)) and try to run nslookup I get : No name server/service(s) responding. I can ping the DNS server from this client. I am using Red hat 7.2 and bind 9.1.3. I was thinking the problem was related to why I can't telnet using port 53, for example telnet cot-dns1 53. I get connection refused. I was thinking I need to open this port up. but not sure how.

wickdgin · 07-03-2002, 07:42 PM

Sounds like your firewall is probably blocking outside access to port 53 -- I would start by going over your firewall rules. A default install of Linux 7.2 uses ipchains, so check your rules by `/sbin/ipchains -L`