PortPilot

Open Port Checker

Check whether a TCP port on your connection is reachable from the public internet.

Common ports

Click any port to test it instantly.

80
HTTP
Standard unencrypted web traffic.
443
HTTPS
Encrypted web traffic — used by virtually every modern website.
22
SSH
Secure remote shell. Common on Linux servers and homelab setups.
3389
RDP
Microsoft Remote Desktop. Avoid exposing this to the internet without a VPN.
25565
Minecraft
Default port for Minecraft Java Edition servers.
32400
Plex
Plex Media Server. Forward this to stream your library remotely.
21
FTP
File Transfer Protocol. Largely obsolete — prefer SFTP (port 22).
25
SMTP
Outbound email. Most home ISPs block this.

How port checking works

Our server tries to open a TCP connection to your public IP on the port you specify. There are three possible outcomes:

  • Open — something on your network accepted the connection. Forwarding is working.
  • Closed — your IP is reachable, but nothing is listening on that port.
  • Filtered — your router or ISP is silently dropping the packet. Check your firewall / port forwarding rules.

For your safety

PortPilot only ever scans your own IP address, automatically detected from your connection. We do not allow scanning third-party hosts.