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  2. Open port - Wikipedia

    en.wikipedia.org/wiki/Open_port

    It is common security practice to close unused ports in personal computers, so as to block public access to any services which might be running on the computer without the user's knowledge, whether due to legitimate services being misconfigured, or the presence of malicious software.

  3. Port knocking - Wikipedia

    en.wikipedia.org/wiki/Port_knocking

    In computer networking, port knocking is a method of externally opening ports on a firewall by generating a connection attempt on a set of prespecified closed ports. Once a correct sequence of connection attempts is received, the firewall rules are dynamically modified to allow the host which sent the connection attempts to connect over specific port(s).

  4. 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 ...

  5. VLAN hopping - Wikipedia

    en.wikipedia.org/wiki/VLAN_hopping

    Simply do not put any hosts on VLAN 1 (the default VLAN). i.e., assign an access VLAN other than VLAN 1 to every access port Switch (config-if)# switchport access vlan 2; Change the native VLAN on all trunk ports to an unused VLAN ID. Switch (config-if)# switchport trunk native vlan 999; Explicit tagging of the native VLAN on all trunk ports.

  6. Port (computer networking) - Wikipedia

    en.wikipedia.org/wiki/Port_(computer_networking)

    In computer networking, a port or port number is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service. At the software level, within an operating system , a port is a logical construct that identifies a specific process or a type of network service .

  7. The Hawaiian monk seal is one of the world’s most endangered marine mammals. For more than six decades, the population has declined. And while recent numbers show a slight growth, they are not ...

  8. Elton John Reveals Which of His Own Songs Are His Favorites ...

    www.aol.com/elton-john-reveals-own-songs...

    The Late Show with Stephen Colbert. Elton John on 'The Late Show with Stephen Colbert' on Dec. 17.

  9. WS-Discovery - Wikipedia

    en.wikipedia.org/wiki/WS-Discovery

    In Windows 8 or later installation is automatic. WS-Discovery is enabled by default in networked HP printers since 2008. [1] [2] WS-Discovery is an integral part of Windows Rally technologies and Devices Profile for Web Services. The protocol was originally developed by BEA Systems, Canon, Intel, Microsoft, and WebMethods.