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Server: Apache/2.4.57 (Unix) OpenSSL/1.1.1k
System: Linux tam.zee-supreme-vps.net 4.18.0-513.9.1.el8_9.x86_64 #1 SMP Sat Dec 2 05:23:44 EST 2023 x86_64
User: adltc (1070)
PHP: 7.4.33
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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