Set user (SetUID) and set group (SetGID) programs and scripts are a powerful mechanism provided by Unix to support “controlled invocation” to manage access to sensitive resources. However, precisely because of this it is a potential security hole, and bugs in such programs have led to many compromises on Unix systems. Detail a command you could use to locate all set user or group scripts and programs on a Unix system, and how you might use this information.
Answer to relevant QuestionsConsider a memory system with the following parameters: Tc = 100 ns Cc = 0.01 cents > bit Tm = 1,200 ns Cm = 0.001 cents > bit a. What is the cost of 1 MByte of main memory? b. What is the cost of 1 MByte of main memory ...User “ahmed” owns a directory, “stuff,” containing a text file called “ourstuff.txt” that he shares with users belonging to the group “staff.” Those users may read and change this file, but not delete it. ...Why is logging important? What are its limitations as a security control? What are pros and cons of remote logging? Suggest pros and cons for fat client and thin client strategies. An application program is executed on a nine-computer cluster. A benchmark program takes time T on this cluster. Further, 25% of T is time in which the application is running simultaneously on all nine computers. The ...
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