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Server: Apache
System: Linux server10.mejorconweb.com 3.10.0-962.3.2.lve1.5.27.el7.x86_64 #1 SMP Sat Nov 30 02:18:52 EST 2019 x86_64
User: ser65kty (1085)
PHP: 7.4.33
Disabled: exec,passthru,shell_exec,system
$ pwd: /usr/lib/firewalld/services/
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File: //usr/lib/firewalld/services/ntp.xml
<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>Network Time Protocol (NTP) Server</short>
  <description>The Network Time Protocol (NTP) allows to synchronize computers to a time server. Enable this option, if you are providing a NTP server. You need the ntp or chrony package installed for this option to be useful.</description>
  <port protocol="udp" port="123"/>
</service>
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