Add persistant rich firewalld rules (CentOS7)

This assumes CentOS 7 firewalld:

firewall-cmd –permanent –add-rich-rule=’rule family=”ipv4″ source address=”5.5.5.5/32″ destination address=”1.2.3.4/32″ port port=”2000″ protocol=”tcp” accept’
firewall-cmd —reload

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