BLOCK any web site ( IPTABLES )

i am using open suse 11 and i installed IPTABLES i want to right IPTABLES instructions that block any web site

i tried this but it doesnt work

iptables -A INPUT -i eth0 -s 69.49.140.245 -j DROP

I think you will find that iptables is already installed and in use by openSUSE.

Try YaST>Security and users.

Also read the openSUSE Documentation in Help