server monitoring

[Stanisław Findeisen <stf.list.debian.user@eisenbits.com>]

Hi

What tools would you recommend for monitoring the following on a server? :

* kernel + process images in memory
* shape of the process tree
* binary integrity of files + permissions
* network connections
* users, groups
* user sessions
* log files
* ...

I think this calls for a customizable solution with plugins (or so). Is
there any such thing in Debian? How reliable is it?

How about reporting? Logging would be good but logging to a local file
is problematic as that could be compromised on a server hack...

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