SNAT 的設定方式

echo "Setting IP Masquerading and HD parameters...."

echo 1 > /proc/sys/net/ipv4/ip_forward

echo "Setting iptables..... "

/sbin/iptables -F

/sbin/iptables -t nat -F

/sbin/iptables -P FORWARD DROP

# Block access to208.46.65.0/24

/sbin/iptables -A OUTPUT -d 208.48.65.0/24 -j DROP

/sbin/iptables -A FORWARD -s 192.168.0.0/24 -j ACCEPT

/sbin/iptables -A FORWARD -d 192.168.0.0/24 -j ACCEPT

/sbin/iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j SNAT --to-source 172.23.68.61

#NTHU

/sbin/iptables -A FORWARD -s 172.23.68.32 -j ACCEPT

/sbin/iptables -A FORWARD -d 172.23.68.32 -j ACCEPT

/sbin/iptables -t nat -A POSTROUTING -s 172.23.68.32 -j SNAT --to-source 172.23.68.61