Forward Traffic with iptables

iptables-forward-port.sh

# This snippet is an example of how we can forward port 80 and 443 from a local server to a remote server
# These commands are working on Debian and Ubuntu

echo net.ipv4.ip_forward=1 > /etc/sysctl.d/99-ipforward.conf
sysctl -p
apt install iptables-persistent
iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination <remote-server-ip>:80
iptables -t nat -A PREROUTING -p tcp --dport 443 -j DNAT --to-destination <remote-server-ip>:443
iptables -t nat -A POSTROUTING -j MASQUERADE
iptables-save > /etc/iptables/rules.v4

Hello Thank you for your guidance don't we have to log in for the destination server? and is access needed for forwarding?

No, you don't need to config remote server. This will work like a proxy

Hi
Thank you for instructions.
Can we use this code for ssh connection with custom ports?

Hi Thank you for instructions. Can we use this code for ssh connection with custom ports?

yes you can use it