Front | Back |
20
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FTP / TCP File Transfer Protocol, not secure, data transfers over this port
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21
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FTP / TCP File Transfer Protocol, not secure, this is the default/control port
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22
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1. SSH / TCP2. SFTP / TCP3. SCP / TCP
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23
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Telnet / TCP Username and password sent in plaintext. virtual terminal emulation
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25
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SMTP / TCP Simple Mail Transfer Protocol, email sent in plaintext, used for sending email
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49
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TACACS+ / TCP
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53
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DNS - Query / UDPDNS - Zone Transfer / TCP
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67
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DHCP / UDP Dynamic Host Configuration Protocol / Server
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68
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DHCP / UDP Dynamic Host Configuration Protocol / Client
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69
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TFTP / UDP Trivial File Transfer Protocol / not secure, data sent in plaintext
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80
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HTTP / TCP
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88
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Kerberos / TCP/UDP
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110
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POP3 / TCP Post Office Protocol version 3, not secure - email in plaintext, used for retrieving email, click on the email, it is removed from the server
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119
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NNTP / TCP Network News Transfer Protocol, application for Usenet articles
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123
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NTP / UDP Network Time Protocol, used for time synchronization between computer systems
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