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I have a RH 7.1 box which is my DNS server. I would like to secure it so that only 2
ports are open – SSH and DOMAIN. I
would also like to be able to send outbound mail only (not receive). This is all the services that I need on that
box. What is the best way to approach
this? I am told that IP chains would do
this for me, but don’t really know the syntax. Could anyone please help me write my rules? Thanks |
