NT Sniffer 0.01 – For NT4.0 includes a packet driver. Sniffs packets from networks and displays full information for: Ethernet, IP, TCP (data also), and UDP.
You can download it from the following link: https://packetstormsecurity.com/files/download/17772/coopersniff01.zip
Source: https://packetstormsecurity.com/files/17772/coopersniff01.zip.html