MOON
Server: Apache
System: Linux smtp.modiva.org 3.10.0-862.14.4.el7.x86_64 #1 SMP Wed Sep 26 15:12:11 UTC 2018 x86_64
User: rtbrisc (1005)
PHP: 8.1.34
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File: //usr/lib/firewalld/zones/dmz.xml
<?xml version="1.0" encoding="utf-8"?>
<zone>
  <short>DMZ</short>
  <description>For computers in your demilitarized zone that are publicly-accessible with limited access to your internal network. Only selected incoming connections are accepted.</description>
  <service name="ssh"/>
</zone>