Microsoft has released patches for Windows NT and 95, though they can be difficult to find at Microsoft's Web site . I wouldn't want you to get the wrong impression here. Since Microsoft keeps a very tight leash on the NT source code, system crackers and hackers have to try harder to find weaknesses to exploit. Firewalls are a key ingredient to any network that is hooked to the Internet. Not all threats to your network are external and not all weaknesses are a result of bugs in the operating system.
Users can directly or inadvertently compromise security.
Intrusion Detection, Inc. is the maker of two useful tools that will help you get a handle on security. The Kane Security Analyst, which examines a wide range of issues, and the Kane Security Monitor, which monitors intrusion attempts. With the increasing use of NT comes a growing number of utilities that help network administrators manage their networks. Check out the offerings by Midwestern Commerce Inc. . Mission Critical Software is the maker of Enterprise Administrator and SeNTry.