IPTABLES

MASQUERADE

Checking NAT

iptables -t nat -v -L POSTROUTING

Adding Masquerade

iptables -t nat -A POSTROUTING -j MASQUERADE

PREROUTING

prerouting use for pointing  internet port to local ip address and port

Checking Prerouting

sudo iptables -t nat -v -L PREROUTING -n --line-number

Adding Prerouting

iptables -t nat -A PREROUTING -p tcp -d 95.217.76.186 --dport 36657 -j DNAT --to-destination 192.168.100.2:26657

Delete Prerouting

check line number prerouting will be delete

sudo iptables -t nat -v -L PREROUTING -n --line-number

delete prefouting by line number

sudo iptables -t nat -D PREROUTING 4