You can add a logon announcement indicating that unauthorized access to your server or workstation is prohibited. To successfully prosecute system break-ins, the courts require that you announce that your system may only be accessed by users with a valid account. In addition, you cannot say "Welcome" during logon, because the welcome is interpreted by the courts as giving blanket permission to anyone to access your system. You can display a legal notice announcement box before logon, and the user has to specifically press OK before he or she can enter their username and password.
Editing the Registry should be done only by experienced users and with extreme care and the Registry should always be exported or backed up before any changes are made.
1. Start the REGEDIT.EXE program.
2. Go to the key HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\Current Version\Winlogon
3. Double click on the key LegalNoticeCaption and change its value to the desired text, e.g., "This is a private Corporation server"
4. Double click on the key LegalNoticeText and change its value to the desired text, e.g., "Unauthorized Access Prohibited"
If you are using the Windows 95 operating system, substitute "Windows" for "Windows NT" in the above registry key.
Note that the FTP server, that is part of the Internet Services Manager, allows you to set specific access rights and logon messages for users of the FTP service on your system. The above messages are intended for users that log on locally.