A port is a network location with certain address inside any operating system which main purpose is to differentiate traffic related to various services and apps. Ports are identified by the number from 1 to 65535. Each port is always bind to an IP address of a host and a protocol type relevant to communication way.
Ports can be grouped into 3 main categories:
- System ports, 0-1023 – ports associated with core services and considered to be essential for operating system
- User ports, 1024-49151 – ports assigned by IANA using the ‘IETF Review’ process, the ‘IESG Approval’ process, or the ‘Expert Review’ process
- Dynamic ports, 49152-65535 – ports suggested for private use.
Here you will find a list of ports and protocols which are in use by Plesk services.
|Administrative interface of Plesk over HTTPS||TCP 8443|
|Administrative interface of Plesk over HTTP||TCP 8880|
|Samba – file sharing on Windows networks||UDP 137, UDP 138, TCP 139, TCP 445|
|VPN service||UDP 1194|
|Web server||TCP 80, TCP 443|
|FTP server||TCP 21|
|SSH (secure shell) server||TCP 22|
|SMTP (mail sending) server||TCP 25, TCP 465|
|POP3 (mail retrieval) server||TCP 110, TCP 995|
|IMAP (mail retrieval) server||TCP 143, TCP 993|
|Mail password change service||TCP 106|
|MySQL server||TCP 3306|
|Microsoft SQL Server||TCP 1433|
|PostgreSQL server||TCP 5432|
|Licensing Server connections||TCP 443|
|Domain name server||UDP 53, TCP 53|
|Plesk Installer, Plesk upgrades and updates||TCP 8447|
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