TupInsight is an easy-to-install and -use Internet activity monitoring and web access control system. It uses a computer on a local area network (LAN) not only to monitor and record other hosts` web behaviors, but also to restrict online activities according to customized filtering Internet policies. The main functions and features of TupInsight can be summarized as follows: (A) Capturing all Emails sent/received on the whole local network; (B) Snapshoting all the webpages viewed on the whole local network and copying all the uploaded/downloaded FTP files; (C) Monitoring chat sessions (such as Yahoo, AOL, MSN, and ICQ), game activities, and other use of online applications self-definable by the administrator; (D) Enforcing web access control according to the administrator`s customization; (E) Scanning and detecting host names and grouping hosts into different classes for better workgroup administration; (F) Based on the client/server architecture to support distributed management of data; (G) Easily archiving and searching records, and exporting data to support statistics and report preparation; and (H) Featuring an easy-to-navigate user interface.