Lynn wrote:
I should have wrote: "Is there actually a reason to open ports 53
UDP & TCP in the (external) firewall for the DNS service? Meaning
port forwarding of a router...
Routers tend to allow all traffic out, but I can't find any reason
to port forward DNS queries into a LAN.
I never connect servers directly to the internet - I think that's
crazy. I always hide them behind routers running NAT.
So the question really is, is there a reason to allow the outside
world to query my private DNS service?
In that case, I can't see why either. I allow it both ways on my
machine, but I'm also running a caching dns server on it for certain
machines to use. You could try shutting the port down, and see if it has
an impact on your services. Maybe try something like dnsreport.com to
test it afterwards.
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