We are in the final stages of developing a Wide Area Network Security Gateway (WSG). The WSG filters and/or monitors network traffic, and logs traffic data. The development of WSG has given us experience in many areas of NT, including development from the kernel level to the application level, and administration of MS SQL Server and MS Internet Information Server. WSG was initially built under Windows NT 3.51, and is currently being ported to NT 4.0 The WSG software consists of a kernel mode driver, built over the NDIS layer. The kernel mode driver receives packets from the NDIS layer, filters them based on an access list, and passes traffic data up to a user mode Win32 application. The user mode application is a Winsock UDP client, which sends the traffic data to a Winsock UDP server residing on another machine. The UDP server dumps the traffic data to a text file, which is imported into MS SQL Server. Network managers search the traffic data via a web based interface.

We were also involved in the migration of approximately 100 NT domains to a centralized NT master domain. We are currently in the process of migrating the Kennedy Space Center mail system to MS Exchange 4.0 and 5.0. This migration involves moving various disparate mail systems to a centralized Exchange service. Approximately 10,000 clients will be migrated over a one year period. Our involvement has ranged from system and network design to client installation and configuration.

KSC currently has several different directory services. We are researching using NT to develop a directory services architecture that will integrate messaging, security, and network objects directory services.

In the near future, we plan to research real time OS for windows NT for space station and space shuttle check out launch control systems.

Becky Dowell
Wang / I-Net
MS INI-18
Kennedy Space Center, FL 32899
phone (407) 867-6766
fax (407) 867-6933
Becky.Dowell-1@kmail.ksc.nasa.gov