{"id":5503,"date":"2023-02-15T15:35:51","date_gmt":"2023-02-15T10:05:51","guid":{"rendered":"https:\/\/trysiteprice.com\/blog\/?p=5503"},"modified":"2023-02-15T15:35:51","modified_gmt":"2023-02-15T10:05:51","slug":"linux-iptables-port-redirection-example","status":"publish","type":"post","link":"https:\/\/trysiteprice.com\/blog\/linux-iptables-port-redirection-example\/","title":{"rendered":"Linux iptables: Port Redirection Example"},"content":{"rendered":"

Port redirection (also known as port forwarding) is a useful technique for redirecting traffic from one port to another on a Linux system using the iptables<\/code> firewall. Here’s an example of how to set up port redirection using iptables<\/code>.<\/p>\n

Let’s say you have a web server running on port 8080, but you want to make it available on the default HTTP port (port 80) instead. You can use the following iptables<\/code> rules to redirect traffic from port 80 to port 8080:<\/p>\n

\n
<\/div>\n
sudo iptables -A<\/span> PREROUTING -t nat -i<\/span> eth0 -p<\/span> tcp --dport<\/span> 80<\/span> -j REDIRECT --to-port<\/span> 8080<\/span>
\nsudo iptables -A<\/span> INPUT<\/span> -p<\/span> tcp -m state --state<\/span> NEW --dport<\/span> 8080<\/span> -i<\/span> eth0 -j ACCEPT
\n<\/code><\/div>\n<\/div>\n

These rules do the following:<\/p>\n