Create NAT instance AWS

Amazon provides Amazon Linux AMIs that are configured to run as NAT instances. These AMIs include the string amzn-ami-vpc-nat in their names, so you can search for them in the Amazon EC2 console.

redirect from NAT to private net
sudo iptables -t nat -A PREROUTING -p tcp --dport 10234 -j DNAT --to-destination 10.0.1.234:22
sudo iptables -A POSTROUTING -t nat -s 10.0.1.0/24 -j MASQUERADE
sudo /etc/init.d/iptables save

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

delete
sudo iptables -t nat -D PREROUTING 2