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Open Port Check Tool

Use the tool below to check for common open ports on your current public IP address.

Why check for open ports?

  • Open ports can expose services on your device to the public internet, which may lead to unauthorized access or exploitation if not properly secured.
  • Some VPNs or proxy services may unintentionally leave ports open, which can make your network identifiable or vulnerable.
  • Checking open ports helps you identify which services are externally accessible, aiding in better security management and privacy control.

What ports are tested by this tool?

This tool attempts to connect to the following common ports (descriptions shown in results):

  • 21 (FTP) – File Transfer Protocol for transferring files.
  • 22 (SSH) – Secure Shell for remote login and command execution.
  • 23 (Telnet) – Unencrypted remote login protocol (legacy).
  • 25 (SMTP) – Simple Mail Transfer Protocol for sending emails.
  • 53 (DNS) – Domain Name System for resolving domain names.
  • 80 (HTTP) – HyperText Transfer Protocol for web traffic.
  • 110 (POP3) – Post Office Protocol for retrieving email.
  • 143 (IMAP) – Internet Message Access Protocol for managing email.
  • 443 (HTTPS) – Secure version of HTTP using TLS/SSL. Also used for SSTP VPN.
  • 445 (SMB) – Server Message Block for Windows file sharing.
  • 465 (SMTPS) – Secure SMTP for encrypted email delivery.
  • 587 (SMTP Submission) – Email submission with authentication.
  • 993 (IMAPS) – Secure IMAP for encrypted email access.
  • 995 (POP3S) – Secure POP3 for encrypted email retrieval.
  • 1194 (OpenVPN) – Default port for OpenVPN tunnels.
  • 1701 (L2TP) – Layer 2 Tunneling Protocol for VPNs.
  • 1723 (PPTP) – Point-to-Point Tunneling Protocol for VPNs.
  • 3306 (MySQL) – Default port for MySQL database connections.
  • 3389 (RDP) – Remote Desktop Protocol for Windows desktop access.
  • 5060 (SIP) – Session Initiation Protocol for VoIP calls.
  • 5061 (SIPS) – Secure version of SIP using TLS.
  • 5222 (XMPP) – Messaging and presence protocol (Jabber/XMPP).
  • 5555 (SoftEther) – Default SoftEther VPN communication port.
  • 8080 (HTTP Alt) – Alternate HTTP port often used by proxies or testing servers.

Disclaimer: This port checker provides information based on standard connection attempts from an external server. Network configurations can be complex. This tool is hosted externally on Vercel and is provided for informational purposes only.