Abstract
This chapter addresses the most important rules for handling regular maintenance and for troubleshooting any problems that arise. Once the information security system is in place and operating effectively, the main focus turns to maintenance and troubleshooting, areas which can also lead to security problems. Maintenance that is performed on hardware or software must be written to a log book or computer file. Modifications, patches, and updates to the system may open up security holes inadvertently and a logbook may provide a clue to the problem. Security can be increased by installing software patches that update security vulnerabilities. A software tool or suite of tools that tries to break into your system should be obtained and used on a quarterly basis or after major software changes, patches, reconfigurations, and operating system updates. Information security problems as well as network problems can be diagnosed more quickly by replacing devices on the network. The chapter discusses other best practices.
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