How to open firewall port on CentOS7

l-lin included in post

2018-02-09 50 words One minute

CentOS 7 is now using Firewalld instead of iptables, so the commands are different if you want to open a port:

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# Open port
firewall-cmd --zone=public --add-port=8080/tcp --permanent
# Reload firewall
firewall-cmd --reload
# Use this command to check the active zones
firewall-cmd --get-active-zones