FTP - File Transfer Protocol - TCP 20/21, SSH - Secure Shell - Connection-oriented - TCP 22, Telnet - TCP 23, SMTP - Simple Mail Transfer Protocol - TCP 25, DNS - Domain Name System - UDP 53 / TCP 53, DHCP - Dynamic Host Configuration - Connectionless Protocol - UDP 67/68, HTTP - Hypertext Transfer Protocol - TCP 80, POP3 - Post Office Protocol - TCP 110, NetBIOS Name Service - UDP 137, NetBIOS Session Service - TCP 139, IMAP - Internet Mail Access Protocol - TCP 143, SNMP - QUERY - UDP 161, SNMP - TRAP - UDP 162, LDAP - Lightweight Directory - TCP 389, HTTPS - Hypertext Transfer Protocol Secure - Connection-oriented - TCP 443, SMB (Server Message Block)/CIFS (Common Internet File System) - TCP 445, RDP - Remote Desktop Protocol - TCP 3389,

CompTIA A+ 1101 Ports

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