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EternalBlue [5] is a computer exploit software developed by the U.S. National Security Agency (NSA). [6] It is based on a vulnerability in Microsoft Windows that allowed users to gain access to any number of computers connected to a network.
The so-called OOB simply means that the malicious TCP packet contained an Urgent pointer (URG). The "Urgent pointer" is a rarely used field in the TCP header, used to indicate that some of the data in the TCP stream should be processed quickly by the recipient.
In computer networking, a firewall pinhole is a port that is not protected by a firewall to allow a particular application to gain access to a service on a host in the network protected by the firewall. [1] [2] Leaving ports open in firewall configurations exposes the protected system to potentially malicious abuse.
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 ...
Port knocking is a flexible, customisable system add-in. If the administrator chooses to link a knock sequence to an activity such as running a shell script, other changes such as implementing additional firewall rules to open ports for specific IP addresses can easily be incorporated into the script. Simultaneous sessions are easily accommodated.
Interestingly, the number of home injuries resulting in hospital visits rose dramatically across nearly all categories in the most recent year data is available, reaching a decade-high of over 10 ...
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[3] [4] [1] It copies itself to the Windows system directory (Bagle.A as bbeagle.exe, Bagle.B as au.exe), adds HKCU run keys to the registry, and opens a backdoor on a TCP port (6777 for Bagle.A and 8866 for Bagle.B). [4] [1] Using an HTTP GET request, Bagle.B also informs the virus's programmer that the machine has been successfully infected.