Category: ASP
Firewall Ports:
- 20 FTP (Consider SFTP over SSH as it is more secure than FTP)
- 21 FTP (Consider SFTP over SSH as it 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 โ 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)