If I’m not using the NS services on a server, do I need to keep port 53 UDP (DNS) open?
And by not using, I mean I don’t have any domains with the their name server records pointed at the server.
Thanks
If I’m not using the NS services on a server, do I need to keep port 53 UDP (DNS) open?
And by not using, I mean I don’t have any domains with the their name server records pointed at the server.
Thanks
Hi xmmedia
Welcome to Iw forums
You can close port 53, as long as no website or domain name is using the dns of the server
If using a different NS/DNS, it should be fine and work normally on localhost access for internal dns
Many thanks
John
Great. Thanks
Hi @d2d4j
Does that means that if I’m not running any DNS on the server (all domains use external dns providers), besides closing the 53 port can I also fully disable/stop the DNS service from running on the server? Or even with no domains using it, IW still needs the DNS service running?
Thanks
Hi nqservices
Sorry for not been clear
If no dns services are been used (as in nameservers use) then you can close port 53 in full
You can stop dns services on all ip addresses except localhost (127.0.0.1), as localhost dns is used by Apache
I suppose you could stop localhost dns, and let it use host or external dns, but it takes longer
I hope that explains it better and dns does not add loading as such
Many thanks
John