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  2. Open port - Wikipedia

    en.wikipedia.org/wiki/Open_port

    The above use of the terms "open" and "closed" can sometimes be misleading, though; it blurs the distinction between a given port being reachable (unfiltered) and whether there is an application actually listening on that port. Technically, a given port being "open" (in this context, reachable) is not enough for a communication channel to be ...

  3. List of TCP and UDP port numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

    The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...

  4. Secure Shell - Wikipedia

    en.wikipedia.org/wiki/Secure_Shell

    The IANA has assigned TCP port 22, UDP port 22 and SCTP port 22 for this protocol. [10] IANA had listed the standard TCP port 22 for SSH servers as one of the well-known ports as early as 2001. [11] SSH can also be run using SCTP rather than TCP as the connection oriented transport layer protocol. [12]

  5. Transmission Control Protocol - Wikipedia

    en.wikipedia.org/wiki/Transmission_Control_Protocol

    Before a client attempts to connect with a server, the server must first bind to and listen at a port to open it up for connections: this is called a passive open. Once the passive open is established, a client may establish a connection by initiating an active open using the three-way (or 3-step) handshake:

  6. Use POP or IMAP to sync AOL Mail on a third-party app or ...

    help.aol.com/articles/how-do-i-use-other-email...

    Settings may be in a different location in each email client, though the AOL server and port settings will always be the same. For additional questions specific to the email client, check the manufacturer’s website. Manufacturers cannot answer questions about your AOL Mail settings, or your AOL username or password.

  7. Fast and Secure Protocol - Wikipedia

    en.wikipedia.org/wiki/Fast_and_Secure_Protocol

    FASP's control port is TCP port 22 – the same port that SSH uses. For data transfer, it begins at UDP port 33001, which increments with each additional connection thread. [1] FASP's flow control algorithm, unlike TCP's, completely ignores packet drops. Instead, it acts on changes in measured packet delivery time.

  8. AOL Mail secure connection settings requirement - AOL Help

    help.aol.com/articles/secure-mail-connection-faq

    AOL is committed to protecting the privacy and security of our members. To maintain the security of your account while accessing AOL Mail through third-party apps, it's necessary to keep your connection settings updated.

  9. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!