Unlike many other packet sniffing programs that use WinPcap library as the driver to capture live network data, TupSight is an NAT router technology-based EIM (Employee Internet Management) product realizing direct and reliable web monitoring and control at the Internet gateway.

TupSight can be installed on one of the computers on any kind of LAN infrastructures (i.e., no matter they are switched or wireless); and is NIC (network interface card)-independent (for example, it works with a gigabit network adapter.)TupSight not only logs in real time URL visits, Email, chats, games, FTP, and data flows, but also takes webpage snapshots, duplicates Email and FTP copies, records MSN messenger content, and gives statistical reports.

It freely restricts online activities with preset time schedules and according to customized filtering Internet policies.As an NAT router by nature, TupSight provides DNS forwarding and proxy functions and shares a single Internet connection to all computers on a LAN.