CentOS 7: redirect port 80 to port 8080
CentOS 7 uses firewalld to manage ports, firewall rules and more. To quickly get up and running, firstly list all currently existing rules:
The output will be something similar to this, depending on what services you have running.
public (active) target: default icmp-block-inversion: no interfaces: ens160 sources: services: ssh dhcpv6-client ports: protocols: masquerade: no forward-ports: source-ports: icmp-blocks: rich rules:
If you simply want to open a port, use
--add-port (and later
--remove-port to revert the change if need be).
To instead forward port 80 to port 8080:
After you’ve made your changes, be sure to check the state is as expected. The output for a correctly forwarded port looks like this:
public (active) forward-ports: port=80:proto=tcp:toport=8080:toaddr= ...
Once you’re happy with your changes, save them permanently.
You can then reload the rules and check that everything is as you’d expect it to be.
firewall-cmd --reload firewall-cmd --list-all