Finding And Interpreting Windows Firewall Rules

by Joakim Kävrestad

Determining with whom and in what way a computer has communicated can be important and interesting in several types of examinations. Communications can be an important part of analyzing if and how a computer has been remote controlled or with whom the computer has shared information. It can also be a good way to determine if a computer has been compromised or infected with malware.

If a computer is compromised and controlled remotely by a rogue user, that user needs to have an established connection to the computer. Further, many types of malware are used to steal and send information to someone, and simply need to be connected with a so-called “command and control” server that can control their behavior. A common denominator for everything that needs to communicate is that it has to pass through the firewall.

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