ReadyNAS OS 6.10 adds an active connection overview screen as a tab in the Admin Page under System > Logs.
Under the Connections tab, you can look at currently active sessions from the ReadyNAS.
Filtering Active Connections
There are three ways to filter connections: protocol, user, and host/IP.
Protocol filtering options are: All, iSCSI, SMB, FTP, HTTP/S, ReadyNAS, ReadyCLOUD, Rsync, AFP
Name filtering is case-insensitive supports wildcard (*).
Host/IP allow you to filter actions by a hostname or IP. Filtering by IP will also filter the hostnames with matching IPs, but not vice versa. This field supports wildcard (*) entry.