Cisco 4-Port SSL/IPSec VPN Router RVL200 - Manual (Page 78)

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Active Directory Server
4-Port SSL/IPSec VPN Router
Appendix D
Troubleshooting
If your users are unable to connect via Active Directory,
check the following:
The time settings between the Active Directory
server and the Router must be synchronized.
Kerberos authentication, used by Active Directory
to authenticate clients, permits a maximum of a 15-
minute time difference between the Windows server
and the client (the Router).
Make sure that your Windows server is configured
for Active Directory authentication. If you are using a
Windows NT 4.0 server, then your server only supports
NT Domain authentication. Typically, Windows 2000
and 2003 servers are also configured for NT Domain
authentication to support legacy Windows clients.
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