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4.1.3 AllowMultipleConnectionsFrom

This variable should contain a list of IP wildcards to hosts which are allowed simultaneous sessions on the server. Hosts which are not in this list are allowed to connect only once, i.e. they must terminate and reconnect in order to establish a new session. This is to prevent a possible attacker from opening multiple sockets and never closing them, resulting in a denial of service attack. Hosts IP's can be placed here if they could have overlapping copy sessions (e.g. long backup transfers which can run over time). This prevents the error message "Multiple connections denied/spam shield".

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