20/21, File Transfer Protocol, 22, Secure Shell, 23, Telnet, 25, Simple Mail Transfer Protocol, 53, Domain Name System, 67/68, Dynamic Host Configuration Protocol, 80, HyperText Transfer Protocol, 110, Post Office Protocol (POP3), 137-139, NetBIOS, 143, Internet Mail Access (IMAP), 161/162, Simple Network Management Protocol (SNMP)), 389, Lightweight Directory Access Protocol (LDAP), 443, HTTP Secure (HTTPS), 445, Server Message Block (SMB), 3389, Remote Desktop Protocol (RDP)

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