Need to block port 1521 for all machines except one.

Rohit khaladkar rohit.khaladkar at gmail.com
Tue Mar 31 07:46:19 UTC 2009


Hi All,As a security measure, I need to block port 1521on the database
server , which is used by Oracle for all machines, except one.I tried using
the following commands to block the port, but for some reason it is not
working.Can someone please help me.


iptables -A INPUT -s $1 -p tcp --dport 1521 -j ACCEPT
iptables -A INPUT -p tcp --dport 1521 -j DROP

where $1 is the machine name or ip address of the machine which needs access
to the port.

Thanks!
Rohit Khaladkar



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