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Block some website in Linux machine

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linux-howto

http://serverfault.com – In my office all are using facebook and some other site that we don't want to be. Form the server pc, I used to share my net through the /ect/rc.local file. I edited the file with this line: #!/bin/sh # # This script will be executed *after* all the other init scripts. # You can put your own initialization stuff in here if you don't # want to do the full Sys V style init stuff. touch /var/lock/subsys/local echo 1 > /proc/sys/net/ipv4/ip_forward iptables -F iptables -X iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP iptables -A INPUT -j ACCEPT iptables -A OUTPUT -j (HowTos)