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Offensive Hacking Resources BD - COMMON WELL-KNOWN PORTS Service Port Function HTTP 80 Web HTTPS 443 Web (secure) FTP 20,21 File transfer SFTP 22 File transfer (secure) FTPS 989,990 File transfer (secure)
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List of TCP Ports and UDP Ports (Well-Known)
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:max_bytes(150000):strip_icc()/tcp-header-56a1adc85f9b58b7d0c1a24f.png "The Most Popular TCP and UDP Port Numbers")