Helo:
I have a RedHat 6.2 Server with two ethernet cards splitting my network and
have ipchains on it. I configured my own rules to access my servers under
1024 port, but if I dont let ports open above 1024, I have no response to
request from my servers. My question is, How can I let ports above 1024 open
(only to receive responses of request) but not to allow any connection from
outside (type SYNC)? I tried with !-y but without any success.
I used this rule without success:
ipchins -A input -p tcp -s 0.0.0.0/0 -d $My_server -i eth0 !-y -j ACCEPT
If I put this rule everuything is fine:
ipchains -A input -s 0.0.0.0/0 -d My_server -j ACCEPT 1000:65535
But it's dangerous.
What can I do? Let this ports open or I have any bad configuration in my
rules?
Thnsk you in advance
Best regards.
Israel Garcia Alvarez
Admin Capiro Villa Clara
Cuba
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