> is it possible to limit active sessions number by IP address.
> Lets say i have 192.168.0.0/24 network and i want to limit session
> number for 192.168.0.1, 192.168.0.2 and 192.168.0.3.

Maybe.  What's a "session"?  Interactive login?  NAT connection state?
FTP connection?  It's hard to answer when there are so many plausible
definitions of 'session" that produce such wildly different answers.

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