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<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>FTP</short>
  <description>FTP is a protocol used for remote file transfer. If
you plan to make your FTP server publicly available, enable this option.
You need the vsftpd package installed for this option to be
useful.</description>
  <port protocol="tcp" port="21"/>
  <module name="nf_conntrack_ftp"/>
</service>