[Router] NAT

# Flush NAT table rules
  iptables -F -t nat
  iptables -X -t nat
  iptables -Z -t nat
  iptables -t nat -P PREROUTING  ACCEPT
  iptables -t nat -P POSTROUTING ACCEPT
  iptables -t nat -P OUTPUT      ACCEPT

# Accept eth0 for all resources
iptables -A INPUT -i eth0 -j ACCEPT

# Enable router function
echo "1" > /proc/sys/net/ipv4/ip_forward

# Enable NAT function
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o ppp0 -j MASQUERADE