Common Networking Ports for CompTIA Security+
Port 20/21: FTP - File Transfer Protocol
Port 22: SSH - Secure Shell
Port 23: Telnet - Unsecure Remote Access
Port 25: SMTP - Email Sending
Port 53: DNS - Domain Name System
Port 67/68: DHCP - Dynamic Host Configuration Protocol
Port 69: TFTP - Trivial FTP
Port 80: HTTP - Unencrypted Web Traffic
Port 110: POP3 - Email Retrieval
Port 143: IMAP - Email Retrieval with Features
Port 161/162: SNMP - Network Monitoring
Port 389: LDAP - Directory Services
Port 443: HTTPS - Secure Web Traffic
Port 445: SMB - File Sharing
Port 514: Syslog - Logging Service
Port 636: LDAPS - Secure LDAP
Port 1812/1813: RADIUS - Authentication and Accounting
Port 3389: RDP - Remote Desktop Protocol
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