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I have a new machine (Redhat 8.0) that I am trying
to get working as a primary DNS machine, but also wanting to use iptables to
help secure the box. One issue that I am having is that when iptables is
running, the primary machine denies access to DNS services to all
machines. If I take iptables down DNS is able to transfer between the
primary and secondary and any queries that come in from the outside are
responded to.
I had a similar problem with pop3 mail requests,
however adding a line to the config with port 110/tcp to it fixed that
problem.
Any help with the proper line for DNS in my
iptables config is most appreciated!
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