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The Book of PF by Peter N.M. Hansteen

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Chapter 8. LOGGING, MONITORING, AND STATISTICS

LOGGING, MONITORING, AND STATISTICS

Exercising control over a network, whether at home or at work, is probably a main objective for anyone who reads this book. One necessary element of keeping control is having access to all relevant information about what happens in your network. Fortunately for us, PF (like most components of Unix-like systems) is able to generate log data for network activity.

PF offers a wealth of options for setting the logging detail level, processing log files, and extracting specific kinds of data. You can already do a lot with the tools that are in your base system, but there are several other tools available ...

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