Service Enhancements
- Domain Name System (DNS) server (added in Windows NT 4.0)
- NetBT and DNS Enhancements (added in Windows NT 4.0)
- Nslookup utility added to TCP/IP utilities for troubleshooting DNS (added in Windows NT 4.0)
- MPR (Multi-Protocol Router) support (added in Windows NT 3.51 Service Pack 2)
- TCP/IP printing support enhancements (added in Windows NT 4.0)
- Point-to-Point Tunneling Protocol enhancement (added in Windows NT 4.0)