what is a ‘jail’?

With fail2ban what is a ‘jail’?

With fail2ban what is a ‘jail’?

A.
A netfilter rules chain blocking offending IP addresses for a particular service.

B.
A group of services on the server which should be monitored for similar attack patterns in
the log files.

C.
A filter definition and a set of one or more actions to take when the filter is matched.

D.
The chroot environment in which fail2ban runs.



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