Red Hat / Centos firewall

 Try this command
 
 firewall-cmd --permanent --zone=public --add-rich-rule="rule family="ipv4" \
 source address="1.2.3.4/32" \
 port protocol="tcp" port="4567" accept"
 
 Check the zone file later to inspect the XML configuration
 
 cat /etc/firewalld/zones/public.xml
 
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