TYAN S4992, Руководство пользователя

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Group Based System Access Control
This is similar to the option above, except that you can specify a group of IP
addresses and not a network with a network mask.
User Blocking
When someone attempts to login to KVM-over-IP Sever Management and fails,
you can specify how many failed login attempts the OPMA module should
tolerate before waiting for the specified number of "Block Time" minutes before
it allows further logins. This is useful for blocking automated hacking and
cracking attempts.
Login Limitations
You can specify if only a single user is allowed to login to the OPMA module at
one time. Note that if you do so, this greatly reduces the usefulness, for
example the chat window, because you can then only talk to yourself. Also if
another administrator is logged in from a different location, then you will be
blocked accessing the KVM-over-IP Sever Management.
Password aging is the time interval at which users are required to change the
password. Some systems refer to this as "Password Expiry".