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joenorton8014/enable routing and source nat

Created August 11, 2018 14:32
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enable routing and source nat
echo "IP forwarding state:"
sysctl net.ipv4.ip_forward
echo 1 > /proc/sys/net/ipv4/ip_forward
echo "Current IP forwarding state is:"
sysctl net.ipv4.ip_forward
echo "Enabling nat: "
iptables -A FORWARD -o eth0 -i eth1 -s 192.168.56.0/24 -m conntrack --ctstate NEW -j ACCEPT
iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -F POSTROUTING
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
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