Harness the power of the RTX 4090!
Port Scanner
Check which ports are open on your server!
Select the ports you want to scan (up to 20 ports).
Everything you want to know about port scanning and security.
Ports are virtual gateways in computer networks through which a specific service or application communicates. Each port is identified by a number between 0 and 65535. For example, HTTP (web) traffic uses port 80, while HTTPS uses port 443.
Open Port: An active service is running on that port and accepting connections. For example, if port 443 is open, the server accepts HTTPS connections.
Closed Port: No service is running on that port, or it is blocked by a firewall.
21 - FTP: File transfer
22 - SSH: Secure remote access
25 - SMTP: Sending email
80 - HTTP: Web traffic
443 - HTTPS: Secure web traffic
3306 - MySQL: Database
3389 - RDP: Windows Remote Desktop
Keep only the ports you need open on your server. Disable unused services or block them with a firewall. Leaving critical ports such as 22 (SSH), 3306 (MySQL) and 3389 (RDP) open to the internet can be a security risk. Protect these ports with a VPN or IP restrictions.
Scan your open ports to detect potential security vulnerabilities.
Scan multiple ports at once in seconds.
See which services are exposed to the outside world.
See the response time of each port in milliseconds.
Scan up to 20 ports at the same time in a single run.
Automatically identify the service running on each port.
Our port scanner is completely free to use.
The most frequently used port numbers and their services.
