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if i want user should`t have more than 20 sftp connections to a server,
is there any way we can limit no.of connections to a particular user on the server using ssh configuration.
* Added a MaxSessions option to sshd_config(5) to allow control of the
number of multiplexed sessions supported over a single TCP connection.
This allows increasing the number of allowed sessions above the
previous default of 10, disabling connection multiplexing
(MaxSessions=1) or disallowing login/shell/subsystem sessions
entirely (MaxSessions=0).
...so it sounds like your version simply doesn't come with that option.
That said, have you considered using iptables to limit the number of connections which can be started from the same IP? You could do it with the connlimit match using something like (example):
You can write custom wrapper script, who will be checking connections and their number on the SSH port, if reach max number - print some banner (connection refused : max number reached), if not - print some welcome banner.
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