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  2. Screen of death - Wikipedia

    en.wikipedia.org/wiki/Screen_of_death

    The Screen of Death in Windows 10, which includes a sad emoticon and a QR code for quick troubleshooting A Linux kernel panic, forced by an attempt to kill init The Mac OS X kernel panic alert. This screen was introduced in Mac OS X 10.2, while the kernel panic itself was around since the Mac OS X Public Beta.

  3. Blue screen of death - Wikipedia

    en.wikipedia.org/wiki/Blue_screen_of_death

    Preview builds of Windows 10, Windows 11, and Windows Server (available from the Windows Insider program) feature a dark green background instead of a blue one. [ 26 ] [ 27 ] [ 24 ] Windows 3.1, 95, and 98 supports customizing the color of the screen [ 28 ] whereas the color is hard-coded in the Windows NT family .

  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. BlueKeep - Wikipedia

    en.wikipedia.org/wiki/BlueKeep

    BlueKeep (CVE-2019-0708) is a security vulnerability that was discovered in Microsoft's Remote Desktop Protocol (RDP) implementation, which allows for the possibility of remote code execution.

  6. Proxy server - Wikipedia

    en.wikipedia.org/wiki/Proxy_server

    By comparing the sequence of network hops reported by a tool such as traceroute for a proxied protocol such as HTTP (port 80) with that for a non-proxied protocol such as SMTP (port 25). [23] By attempting to make a connection to an IP address at which there is known to be no server. The proxy will accept the connection and then attempt to ...

  7. Port scanner - Wikipedia

    en.wikipedia.org/wiki/Port_scanner

    A port scan or portscan is a process that sends client requests to a range of server port addresses on a host, with the goal of finding an active port; this is not a nefarious process in and of itself. [1] The majority of uses of a port scan are not attacks, but rather simple probes to determine services available on a remote machine.

  8. Black screen of death - Wikipedia

    en.wikipedia.org/wiki/Black_screen_of_death

    MS-DOS and all versions of Windows after Windows 3.1 (Windows 95, Windows 98, Windows Me, Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 and Windows 11) also display a black screen of death when the operating system cannot boot. There are many factors that can contribute to this problem, including the ones listed below.

  9. WinNuke - Wikipedia

    en.wikipedia.org/wiki/WinNuke

    [citation needed] The exploit sent a string of out-of-band data (OOB data) to the target computer on TCP port 139 , [1] causing it to lock up and display a Blue Screen of Death. This does not damage or change the data on the computer's hard disk, but any unsaved data would be lost.