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Server: Apache
System: Linux srv13.cpanelhost.cl 3.10.0-962.3.2.lve1.5.38.el7.x86_64 #1 SMP Thu Jun 18 05:28:41 EDT 2020 x86_64
User: cca63905 (4205)
PHP: 7.3.20
Disabled: NONE
$ pwd: /lib/firewalld/services/
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File: //lib/firewalld/services/ptp.xml
<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>Precision Time Protocol (PTP) Master</short>
  <description>The Precision Time Protocol (PTP) allows to synchronize computers to a time master. Enable this option, if you are providing a PTP master. You need the linuxptp package installed for this option to be useful.</description>
  <port protocol="udp" port="319"/>
  <port protocol="udp" port="320"/>
</service>
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