ZyXEL Communications ZYWALL USG 2000 Support Notes page 221

M. User Management FAQ
M01. What is the difference between user and guest account?
Both "user" and "guest" are accounts for network access. But the difference is that "user"
account can login ZyWALL USG 2000 via telnet/SSH to view limited personal information.
M02. What is the "re-authentication time" and "lease time"?
For security reasons, administrators and accessing users are required to authenticate
themselves after a period of time. The maximum session time is called re-authentication time.
Lease time is another timeout mechanism to force access users to renew it manually (or
automatically, it is configurable). For administrators, lease time is much like an idle time when
configuring GUI.
M03. Why can't I sign in to the device?
There are several reasons that the device can deny the login for
1. Password is wrong
2. Service access policy violation
3. Too many simultaneous login session for an account
4. The IP address is locked out
5. System capacity reached
M04. Why is the TELNET/SSH/FTP session to the device disconnected? Why is
the GUI redirected to login page after I click a button/link?
There are several reasons that device could log you out.
1. Re-authentication, lease or idle timeout
2. IP address is changed after authentication
3. Another account was used to login from the same computer
All contents copyright (c) 2008 ZyXEL Communications Corporation.
ZyWALL USG 2000 Support Notes
221