Ports Used by Plesk

Plesk is middleware between end users and external services such as FTP, mail, DNS and others. Due to technical limitations, Plesk is able to interact with these services only if they are available on certain ports.

The list below provides information about services managed through Plesk and about ports on which they should be available for proper interaction with Plesk. If you use a firewall, make sure that the connections to all of these ports are allowed for corresponding Plesk services.

Service name Ports used by service

Administrative interface of Plesk over HTTPS

TCP 8443

Administrative interface of Plesk over HTTP

TCP 8880

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

MS SQL server

TCP 1433

PostgreSQL server

TCP 5432

Licensing Server connections

TCP 5224

Domain name server

UDP 53, TCP 53

Plesk upgrades and 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.