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#
# Turning IP Forwarding on
#

echo 1>/proc/sys/net/ipv4/ip_forward ; ha 0
$ vi /etc/sysctl.conf   ; net.ipv4.ip_forward = 1

#
# Allow masquerading from LAN PC
# Save settings for next boot
#

$ iptables -t nat -A POSTROUTING -o eth1 -s 192.168.30.20 -j MASQUERADE
$ iptables-save > /etc/sysconfig/iptables