Hyper Text Transfer Protocol (HTTP) - 80, Hyper Text Transfer Protocol Secure (HTTPS) - 443, Simple Mail Transfer Protocol (SMTP) - 25, Simple Mail Transfer Protocol Secure (SMTPS) - 587, Simple Mail Transfer Protocol Secure Legacy (SMTPS) - 465, Post Office Protocol (POP3) - 110, Post Office Protocol Secure (POP3S) - 995, Internet Mail Access Protocol (IMAP) - 143, Internet Mail Access Protocol Secure (IMAPS) - 993, Lightweight Directory Access Protocol (LDAP) - 389, Lightweight Directory Access Protocol Secure (LDAPS) - 636, Remote Authentication Dial-In User Service (RADIUS) - 1812/1813, Terminal Access Controller Access-Control System Plus (TACACS+) - 49, Secure Shell (SSH) - 22, Telnet - 23, Remote Desktop Protocol (RDP) - 3389, Network Time Protocol (NTP) - 123, Network Time Security (NTS) - 4460, Simple Network Management Protocol (SNMP) - 161/162, Syslog - 514, File Transfer Protocol (FTP) - 20/21, Domain Name System (DNS) - 53, Dynamic Host Configuration Protocol (DHCP) - 67/68, NetBIOS over TCP/IP (NetBT) - 137-139, Server Message Block (SMB) - 445, Proxy Server - 8080,

CompTIA A+ Core 1 Ports

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