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FTP
TCP - port 20 and 21
SSH
TCP - port 22
Telnet
TCP - port 23
SMTP
TCP - port 25
HTTP
TCP - port 80
POP3
TCP - port 110
SSL
TCP - port 443
DHCP
UDP - port 67 and 68
TFTP
UDP - port 69
SNMP
UDP - port 161
DNS
TCP and UDP - port 53
Private email
TCP and UDP - port 24 (*RESERVED*)
VOIP
UDP - port 16384 to 32767
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