The Microsoft Windows NT 4.0 and Windows 98 Threat Mitigation Guide describes the process of hardening networks and computers that run earlier versions of the Windows operating system. Organizations may have a variety of combinations of computers running Windows NT 4.0 (Workstation, Server, and Advanced Server) and Windows 98, with or without later versions of Windows clients or servers. This guidance focuses on the protective measures that can be applied to Windows NT 4.0 Workstation and Windows 98 clients and Windows NT 4.0 member servers in an Active Directory directory service domain environment to improve their security.
I wasn't sure if its a good idea to post this link - it's about (very, very, very) old (and I mean very old) operating systems! However, there are still some of those arround - probably it's better to help improve the usage of those outdated operating system, then to do nothing at all... 😉