Browser extension Мozilla Firefox allowing you to check the port availability on your network device without accessing our site directly from the browser.

To install the extension you need:

Addons Port Checker Tool

Immediately after installation, the extension is ready to go.

Addons Port Checker Tool

Common ports

FTP Control21
SSH22
Telnet23
SMTP25
DNS53
HTTP / Web80
POP3110
IMAP143
HTTPS443
IMAP SSL993
POP3 SSL995
MSSQL1433
REMOTE3389
VNC5900