PortUsageTransport Protocol
20FTP Data TransferTCP
21FTP Command ControlTCP
22SSHTCP/UDP
23TelnetTCP
25SMTPTCP
50, 51IPSec
53DNSTCP/UDP
67, 68DHCPUDP
69TFTPUDP
80HTTPTCP
110POP3TCP
119NNTPTCP
123NTPUDP
135-139NetBIOSTCP/UDP
143IMAPTCP/UDP
161, 162SNMPTCP/UDP
194IRC
389LDAPTCP/UDP
443HTTPSTCP/UDP
989, 990FTP over SSL/TLSTCP
3389RDPTCP/UDP

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