Front | Back |
FTP – File Transport Protocol
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TCP 20 (Data), TCP 21 (Control)
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SSH – Secure Shell
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TCP 22
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Telnet
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TCP 23
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SMTP – Simple Mail Transport Protocol
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TCP 25
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DNS – Domain Name System
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TCP 53 (zone transfers), UPD 53(Queries)
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DHCP – Dynamic Host Configuration Protocol
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UDP 67 (Client), UDP 68 (Server)
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TFTP – Trivial File Transport Protocol
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UDP 69
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HTTP – Hypertext Transfer Protocol
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TCP 80
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HTTPS – Hypertext Transfer Protocol Secure
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TCP 443
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SSL VPN – Secure Sockets Layer virtual private network
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443
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POP3 – Post Office Protocol version 3
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TCP 110
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NTP – Network Time Protocol
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UDP 123
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IMAP4 – Internet message access protocol version 4
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TCP 143
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SNMP – Simple Network Management Protocol
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UDP 161
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IPsec – Internet Protocol security (through the use of ISAKMP – Internet Security Association and Key Management Protocol)
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UDP 500
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