Firewall Ports#

  • 20 FTP (Consider SFTP over SSH as is more secure than FTP)
  • 21 FTP (Consider SFTP over SSH as is more secure than FTP)
  • 22 SSH (Consider switching SSH to a different, non-standard port for security reasons)
  • 25 SMTP (some ISPs block port 25 so that a mail client cannot reach the mail server to send mail)
  • 26 SMTP (alternate SMTP port option – see notes for port 25)
  • 37 rdate (needed to retrieve date and time information)
  • 43 whois (part of generic DNS features)
  • 53 bind (DNS)
  • 80 http (Apache / Web)
  • 110 POP3 (Email)
  • 113 ident (authentication)
  • 143 IMAP (Email)
  • 443 https (Web / HTTP over SSL)
  • 465 SMTP (TLS/SSL)
  • 873 rsync (remote sync)
  • 993 (IMAP SSL)
  • 995 (POP3 SSL)
  • 2083 cPanel (SSL encrypted)
  • 2087 WHM (SSL encrypted)
  • 2089 Licensing (Must be open to contact license server)
  • 2096 Webmail (Horde, Squirrelmail)
  • 3306 MySQL (MySQL remote connections)

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« This page (revision-1) was last changed on 24-May-2017 15:30 by Hyve Support
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