open port on centos 8 code example
Example 1: centos 7 port open
firewall-cmd --zone=public --add-port=55555/tcp --permanent
firewall-cmd --reload
Example 2: centos open port
# firewall-cmd --zone=public --add-port=55555/tcp --permanent
success
firewall-cmd --zone=public --add-port=55555/tcp --permanent
firewall-cmd --reload
# firewall-cmd --zone=public --add-port=55555/tcp --permanent
success