Iptables - Open Port Only for one Server IP (allow connections from a specific range)

Posted by user1015314 on Server Fault See other posts from Server Fault or by user1015314
Published on 2012-03-21T11:19:26Z Indexed on 2012/03/21 11:31 UTC
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iptables

My server has multiple IPs,

1.1.1.1
1.1.1.2

and i have a service which listens to a port e.g. 88

Now i want,

when somebody from outside, wants to connect to the port, that he can only connect, to that port, if he connects to the ip 1.1.1.2:88 but if he tries to connect to 1.1.1.1:88 it should not react and it should look like that it dont exists and drops all connections.

Ok, than i need for 1.1.1.2:88 that only allows a specific ip range outside connecters.

for example only 9.*.*.* can connect to that port and ip.

I'm using Centos. Thank you for your help.

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