Configure Remote Access Client Account Lockout (Windows 2000/XP)
You can use the remote access account lockout feature to specify how many times a remote access authentication has to fail against a valid user account before the user is denied access. Use this tweak to set the number of failed logins before the account is locked-out and the time before the lockout is reset.

Specify the Callback Pause Period (Windows NT/2000/XP)
When callback is required or requested this setting defines how long to wait before initiating the callback connection.

Automatically Disconnect Remote Access Callers (Windows NT/2000/XP)
Specifies the amount of idle time in minutes to wait before disconnecting the remote access client.

Time Limit for Remote Access Authentication (Windows NT/2000/XP)
A time limit can be enforced on the period available to logon via remote access before the connection is terminated.

Number of Remote Access Authentication Attempts (Windows NT/2000/XP)
This setting controls the number of authentication retries before a remote access connection is terminated.

Disable Dial-In Access (Windows 95/98/Me)
It's possible for users to setup a modem on a Windows machine, and by using Dial-up Networking allow callers to connect to the internal network. Especially in a corporate environment this can cause a major security risk.

Automatically Use Dial-Up Networking to Logon (Windows NT/2000)
There is an option that is available on the logon dialog box and allows you to dial into your logon server for authentication of your user account, this can be enabled by default.

Disable the "Log on using dial-up connection" Check Box (Windows NT/2000)
During logon Windows allows users to optionally connect to a Windows domain using dial-up networking, this tweak can be used to disable that option.