Check if common network service ports are open or closed on a target host.
Standard TCP and UDP ports commonly used across internet services, databases, and network administration.
| Port | Protocol / Service | Description | Security Status |
|---|---|---|---|
| 21 | FTP | File Transfer Protocol (Unencrypted) | Insecure |
| 22 | SSH / SFTP | Secure Shell remote management | Encrypted |
| 25 | SMTP | Simple Mail Transfer (Email sending) | Standard |
| 53 | DNS | Domain Name System lookups | Standard |
| 80 | HTTP | Hypertext Transfer Protocol (Web) | Unencrypted |
| 110 / 995 | POP3 / POP3S | Email Retrieval | 995 SSL |
| 143 / 993 | IMAP / IMAPS | Internet Message Access Protocol | 993 SSL |
| 443 | HTTPS | HTTP Secure (TLS/SSL Web Traffic) | Encrypted |
| 3306 | MySQL / MariaDB | Relational Database management | Internal Only |
| 3389 | RDP | Windows Remote Desktop Protocol | Restricted |
| 5432 | PostgreSQL | PostgreSQL Database Server | Internal Only |
| 6379 | Redis | In-Memory Cache & Key-Value Store | Internal Only |
| 8080 | HTTP-Alt / Proxy | Development web servers & proxies | Standard |
Check if common network service ports are open or closed on a target host.
A port scanner executes TCP handshakes against specific ports on a target host to determine which network daemons are actively listening. It is an essential tool for administrators and security engineers to reduce attack surfaces and verify firewall rules.
This online diagnostic utility is powered by ToolPing to provide fast, reliable, and secure network analytics for sysadmins and developers.
Enter a hostname or IP address, click a preset like "Web Ports" (80, 443) or type custom ports (e.g. 21, 22, 3306), then click "Scan Ports".
An Open port indicates an active service is listening for incoming network traffic. A Closed port actively rejects connection attempts.
Scanning your own servers, firewalls, and networks for security audits is standard practice. ToolPing rate-limits scans to prevent abuse.
