Livingston Enterprises, Inc. was a computer networking company.

[6][7] Livingston was the original author of the RADIUS standard for authentication.

[9] In 1998, it released the RADIUS Accounting Billing Manager software.

[12] In 1996, Livingston introduced the allowlist-based internet filter ChoiceNet, which could be used on PortMaster products.

[13] The PortMaster 4 was comparable to the Ascend Communications MAX series.