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#  masq.fw
#  iptables masq rules
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$IPT -t nat -A POSTROUTING -o $EXT -s $INT_RANGE -j SNAT --to $EXT_IP
$IPT -A FORWARD -m state --state NEW -i $INT -s $INT_RANGE -j ACCEPT
$IPT -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
$IPT -P FORWARD DROP