Protocol Port numbers
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| FTP | 20 | Data Transport
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| FTP | 21 | Provides flow control
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| SSH | 22 | Executes commands and moves files (remote login)
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| Telnet | 23 | connects remote computer to server
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| SMTP | 25 | Delivers email to email servers
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| DNS | 53 | Translates IPs to hostnames
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| TFTP | 69 | Transfers data (simple FTP and uses UDP)
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| HTTP | 80 | web page connection
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| POP3 | 110 | Delivers email from a mailserver to a client
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| NNTP | 119 | Views and writes news articles for newsgroups
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| NTP | 123 | sets computers to sync up time
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| IMAP4 | 143 | downloads email or email headers; stores, search newsgroups
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| HTTPS | 443 | Allows browsers and servers to sign, authenticate, and encrypt HTTP network packets using SSL
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| SFTP | 22 | Secure File Transfer Protocol is FTP over SSH
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| L2TP | 1701 | Layer Tunneling Secure protocol
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| WINS | 1512 | Windows Internet Naming Service
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| SNMP | 161 | Simple Network Protocol
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| LDAP | 389 | Lightweight Directory Access Protocol
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| Netbios | 137 | Netbios Naming service
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| PPTP | 1723 | Point to Point tunneling Protocol
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digitalman30
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