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TOPIC: server 2003 dns and a firewall

server 2003 dns and a firewall 12 years 5 months ago #23689

hi to all!

if i have a server 2003 and a firewall, should i need to open the port 53 for the dns root hints of the server 2003 to operate? i have iptables on my linux firewall.

any help will be appreciated very much. :D

Re: server 2003 dns and a firewall 12 years 5 months ago #23733

  • nske
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Hello and welcome :)

Yes, the machine on which the DNS server is run must be able to connect to UDP* port 53 of the hosts mentioned in root hints. Unless of course you only operate an authorative servers (in which case you don't serve foreign domains at all).

*theoretically TCP as well, however it is so rare that an answer will be so large that TCP will be used, you can ignore it
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