Port Scanner Guide

This tool allows you to scan network ports to check their status and accessibility.

Features

• Single port scan
• Port range scan (up to 5000 ports at once)
• Common ports quick scan
• Port status detection
• Service detection for common ports
• Response time measurement

How to Use

1. Enter a hostname or IP address
2. Choose scan mode:
   • Single port: scan a specific port
   • Port range: scan a range of ports (max 5000 ports)
   • Common ports: scan frequently used service ports
3. Click "Start Scan" to begin scanning
4. View results in real-time

Common Ports

• 21: FTP
• 22: SSH
• 23: Telnet
• 25: SMTP
• 53: DNS
• 80: HTTP
• 110: POP3
• 143: IMAP
• 443: HTTPS
• 3306: MySQL
• 5432: PostgreSQL
• 6379: Redis
• 27017: MongoDB

Limitations

• Maximum scan range: 5000 ports at once
• Valid port range: 1-65535
• Scan timeout: 1 second per port
• Some ports may be blocked by firewalls
• Results may vary based on network conditions