If you click the Intruder Detection tab, you'll see the screen shown in Figure C. This window allows you to enable NDS Intruder Detection on the NT server. If a user tries to play "guess-the-password" on the NT server, and you've enabled Intruder Detection, NDS will lock the user account out of the server.

Figure C You can enable intruder detection on your NT server through NDS.

To enable Intruder Detection, select the Detect Intruders check box. You can then set the number of failed attempts to watch for in the Incorrect Login Attempts field. By default, users get seven attempts before being locked out. If you want greater security, enter a lower number. The Intruder Attempt Reset Interval counts the number of login attempts within a certain time period. By default, this period is 30 minutes. The Intruder Lockout Reset Interval controls the amount of time the user is temporarily locked out of NDS. After this time, the user can try logging in again. You can unlock the user prior to the expiration of the interval by going to the User object.

The Replica Advisor tab, shown in Figure D, displays all of the NDS partitions containing User objects that have membership in the domain. You can expand each level in the NDS tree to see the list of User objects contained in that partition. You can use this information to determine whether you need to install a replica on your NT server. Novell recommends that you don't install a replica if you already have a NetWare server on your network. Conversely, if your NT server is across a WAN link from a server that contains information about the domain, Novell recommends that you do install a replica on the NT Server.

Figure D

The Replica Advisor tab helps you determine whether you need to install a replica on your NT server.

Why do I need replicas?

NDS replicas contain the NDS information necessary for users to log on to the network. If the replica is held on a server that is separated from the users by a slow or unreliable WAN link, the users will experience slow logons. In some cases, they may not be able to log on at all, even if they have a server locally. With a local replica, you don't have to worry if your WAN goes down. Users authenticate based on information in the replica.

The last tab, NT Tools, is shown in Figure E. This tab acts as a convenient launch pad for NT administrative utilities. If you're running NetWare Administrator from an administrative workstation, NetWare Administrator may ask you to log on to a Windows NT server before displaying any icons. Unfortunately, this tab isn't accessible if you run NetWare Administrator from a Win9x administrative workstation. You'll only see it if you run NetWare Administrator from your NT server or an administrative workstation that runs NT Workstation or Windows 2000 Professional.

Figure E The NT Tools tab allows you to launch NT utilities from within NetWare Administrator.

By default, NT Tools includes shortcuts to User Manager, Server Manager, and Event Viewer. You can add other utilities by clicking Add and entering the necessary launch information. Using the NT Tools tab lets you launch the utilities without having to exit or minimize NetWare Administrator. Additionally, you can use the File and Folder Sharing Wizard to set up shared drives and folders on your NT server. We'll cover the File and Folder Sharing Wizard and other NT administration tasks in an upcoming Daily Drill Down.

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