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  2. Internet Control Message Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Control_Message...

    Echo reply (used to ping) 1 and 2 unassigned: Reserved: 3 – Destination Unreachable [2]: 4 [8] 0: Destination network unreachable 1: Destination host unreachable 2: Destination protocol unreachable 3: Destination port unreachable 4: Fragmentation required, and DF flag set 5: Source route failed 6: Destination network unknown 7: Destination ...

  3. Transmission Control Protocol - Wikipedia

    en.wikipedia.org/wiki/Transmission_Control_Protocol

    Some routers and packet firewalls rewrite the window scaling factor during a transmission. This causes sending and receiving sides to assume different TCP window sizes. The result is non-stable traffic that may be very slow. The problem is visible on some sites behind a defective router. [60]

  4. IP multicast - Wikipedia

    en.wikipedia.org/wiki/IP_multicast

    IP multicast is a method of sending Internet Protocol (IP) datagrams to a group of interested receivers in a single transmission. It is the IP-specific form of multicast and is used for streaming media and other network applications.

  5. Server (computing) - Wikipedia

    en.wikipedia.org/wiki/Server_(computing)

    A computer network diagram of client computers communicating with a server computer via the Internet Wikimedia Foundation rackmount servers on racks in a data center The first WWW server is located at CERN with its original sticker that says: "This machine is a server.

  6. Internet of things - Wikipedia

    en.wikipedia.org/wiki/Internet_of_things

    The Mirai Botnet had singled out specific IoT devices that consisted of DVRs, IP cameras, routers and printers. [275] Top vendors that contained the most infected devices were identified as Dahua, Huawei, ZTE, Cisco, ZyXEL and MikroTik. [275]

  7. BlackNurse - Wikipedia

    en.wikipedia.org/wiki/BlackNurse

    Unlike previous attacks using the ICMP protocol--Smurf attack, ping flood, ping of death--BlackNurse does not flood the destination with traffic. Instead, the researchers realized that the "Destination Port Unreachable" packet causes high CPU usage in the firewall that processes it. [ 3 ]