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Advanced Linux Networking by Roderick W. Smith

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Chapter 22. General System Security

Linux is an extremely powerful OS for many networking functions. Unfortunately, with that power comes at least the potential for vulnerability. Most major servers have a history of bugs that allow outsiders to gain access, and even those that are without bugs may be vulnerable to abuse if an intruder has obtained a password or if the server is misconfigured. Keeping your system secure is therefore a topic that deserves careful attention; you must configure your system to be as secure as possible, and monitor security developments to ensure that you don't fall victim to a newly discovered security vulnerability.

This chapter begins an investigation of security issues with information on shutting down unnecessary ...

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