summary

For Plesk and its services to work correctly, certain ports must not be blocked.

In this topic, you will learn what ports must be kept open on Plesk servers.

The following is a list of ports and protocols used by Plesk services.

Service name

Ports used by service

Administrative interface of Plesk over HTTPS

TCP 8443, UDP 8443

Administrative interface of Plesk over HTTP

TCP 8880

Web server

TCP 80, TCP 443, UDP 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

MySQL/MariaDB 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 updates

TCP 8447

Note

If you install Presence Builder as part of Plesk, Presence Builder uses the same protocol and opens on the same port as the Plesk UI.