Ports

Common Ports

TCP - FTP (21) - SSH (22) - Telnet (23) - SMTP (25) - DNS (53) - HTTP (80) - HTTPS (443) - POP3 (110) - SMB (139 + 445) - IMAP (143)

UDP - DNS (53) - DHCP (67, 68) - TFTP (69) - SNMP (161)

Databases - 1433-mssql - 1521-oracle - 3306-mysql - 5432-postgres - 6379-redis - 27017-mongo