Well-Known Ports
- Port 80: HTTP (HyperText Transfer Protocol)
- Port 21: FTP (File Transfer Protocol)
- Port 25: SMTP (Simple Mail Transfer Protocol)
- Port 22: SSH (Secure Shell)
- Port 443: HTTPS (HyperText Transfer Protocol Secure)
- Port 53: DNS (Domain Name System)
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In my work, I most commonly come across ports 80, 443, 20, 21, 22, 23, 25, and 53. Knowing these ports can help you work more efficiently.
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Apr 15, 2024 · Port number is a 16-bit numerical value that ranges from 0 to 65535. Well-known port (0-1023), registered port (1024-49151), ...
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This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User ...
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I am going back over the basics of TCP/IP and UDP protocols. This time I saw a nifty chart (attached) with some common port numbers and what they're used for, ...
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Well-known/System Ports: 0 – 1023 ; 25, SMTP, TCP ; 42, WINS Replication, TCP, UDP ; 43, WHOIS, TCP, UDP ; 49, TACACS, UDP; can also use TCP but not necessarily on ...
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Jul 25, 2018 · I remember Network Time Protocol (NTP) or port 123 as counting up in a clock like 1, 2, 3 because this is a protocol about time. Upvote
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Oct 20, 2023 · Port numbers that fall into the category of Well Known/Systems ports include numbers between 0 and 1023. IP protocols use them for TCP, UDP, ...
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Jan 6, 2020 · There are 65 535 ports available, some of them are assigned to given services and applications by Internet Assigned Numbers Authority (IANA) ...