This ebook comprises details for realizing the initiatives that you just practice as a process administrator, in addition to the instruments supplied for method administration. Use this e-book in addition to AIX 5L model 5.1 process administration ideas: working method and units.

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Additional resources for AIX 5L System Management Concepts: Operating System and Devices

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In the operating system, the person who administers the system can mark trusted files as part of the Trusted Computing Base (the chtcb command), so that they can be clearly distinguished. The person who administers the system must be careful to add only software that can be fully trusted to the TCB. Consider trusting software if, for example: v You have fully tested the program. v You have examined the program’s code. v The program is from a trusted source that has tested or examined the program.

To provide for secure program installation and update, two strategies are employed. First, privilege and access rights are delineated and limited during installation and update. This minimizes the potential for damage by untrustworthy installation packages. Second, the entire process is auditable. The auditing can be done by examining the system audit trail after installation or update of the program is complete, or auditing can be interactive. The watch command is provided for interactive use.

This extra line is necessary because DCE does not grant root access by default. Because of these lines, non-root users without AIX password cannot get in, but a locally defined root account is able gain access. 28 Operating System and Devices The above example illustrates the DCE module’s use only with the login command. However, the DCE module can be added for other services. If the pam_dce module is added as an auth module for login, it must also be added as an account module as well. The DCE entry for the passwd service ensures that the DCE password is also changed when the user runs the password command.

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