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Legend Software was a one-person New Jersey network-monitoring company whose LAN Patrol product was acquired by Network General in 1989 and rebranded as WatchDog.

Last updated October 14, 2026

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Overview

Legend Software was a small American network-monitoring software company founded by Dan Hansen in New Jersey. It is known primarily as the origin of LAN Patrol, a network monitor that was acquired by Network General Corporation in December 1989. Network General enhanced and rebranded the product as WatchDog, introduced in April 1990. The WatchDog sold only half as well as investors had anticipated within a quarter-year of its introduction, and Network General was forced to buy back $175,000 worth of back-stock to avoid a glut in the company's distribution networks. Legend Software itself was a one-person operation and did not survive as an independent brand after the acquisition; its technology was absorbed into Network General's product line. Network General later merged with McAfee Associates in 1997 to form Network Associates, and the Sniffer and related network analysis products passed through several owners, including NetScout Systems and StoneCalibre.

History

Legend Software was a one-person company based in New Jersey, founded by Dan Hansen. It developed a network monitor called LAN Patrol. In December 1989, Network General Corporation, then a growing network protocol analyzer company based in Menlo Park, California, acquired Legend Software. Network General enhanced and rebranded LAN Patrol as WatchDog, introducing it in April 1990. The WatchDog sold only half as well as investors had anticipated within a quarter-year of its introduction, and Network General was forced to buy back $175,000 worth of back-stock to avoid a glut in the company's distribution networks. Legend Software did not continue as an independent brand after the acquisition; its product was absorbed into Network General's portfolio. Network General itself later merged with McAfee Associates in 1997 to form Network Associates, and the network analysis business changed hands several times, eventually being acquired by NetScout Systems in 2007.

  • Legend Software, a one-person company founded by Dan Hansen in New Jersey, is acquired by Network General Corporation.

  • Network General introduces WatchDog, the enhanced and rebranded version of Legend Software's LAN Patrol.

Products and positioning

Niche network monitoring software vendor; technology acquired and rebranded by Network General as WatchDog.

  • LAN Patrol

    A network monitor developed by Legend Software; acquired by Network General and rebranded as WatchDog.

Recent events

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    Andy Walter becomes strategic advisor to Latend[2]

    Reported:

    Andy Walter has become a strategic advisor to Latend, the company behind Decision Formula. The source text does not specify the effective date of the appointment.

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