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Frequently Asked Questions

 

TupSight 2.6

 

1. How TupSight intercepts data of computer communications and enforces employee Internet policies? 

TupSight boasts the broadest operation spectrum among the EIM (Employee Internet Management) products commercially available.

1)  Gateway Mode: This is the default operation mode of TupSight. The NAT gateway technology embedded in the software enables a reliable LAN infrastructure/hardware-independent web monitoring and control at the Internet doorsteps.

2)  Promiscuous Mode: In the early days of computer networking, the sharing nature of communication channels on a local computer network made packet sniffing possible, by which an intruding hacker picked up passwords and other useful information, and a network administrator diagnosed and trouble-shooted network traffic (see http://www.faqs.org/faqs/computer-security/sniffers/). Most of the local networks were based on Ethernet, a "shared medium" in which packet information is broadcast to all the hosts on the same segment, and interfaces, such as network interface cards (NICs), are designed to bypass the packets not destined to them. A sniffer program, however, turns a host into promiscuous mode, capturing all the packets for further decoding and data-mining.

 

Fig. 1 C sniffs A's packets.

 

In today's de facto switched Ethernet environment where switches are used to connect the Ethernet modes together, one can realize the data capture using an old-fashioned shared Ethernet hub or via the management port of a switch (It sometimes is called "port mirroring," "port monitoring," "Roving Analysis" by 3Com, or  "Switched Port Analyzer" or "SPAN" by Cisco.). See more detailed below in the TupInsight FAQ section.

3)  Bridge Mode: This mode is also called “a machine-in–the-middle.” There is a bridging capability called the “Network Bridge” built into Windows XP and Server 2003. This is a feature of the Network Connections folder that allows a machine with two network interface cards (NICs) to act as a transparent bridge, connecting different local area network (LAN) segments and capturing all the traffic to and from one segment. Therefore, the TupSight machine acts in effect as the "physical" gateway for the network segment following. For its configuration simplicity and minimum hardware requirements (2 NICs), the bridge mode is strongly recommended by us for monitoring and control tasks without changing much of the existent networking structure (See What's New File included in the same installation package.)

 

Fig 2. A machine with two network interface cards (NICs) can be used as a transparent bridge, capturing all the traffic to and from a single machine or a network segment.

4)  Side-Route Mode: An add-on switch-sniffer program of TupSight sets up a "virtual" gateway via which all the Internet communications are captured.

2. When I install TupSight, a warning window pops up stating that the software has not passed Windows Logo testing to verify its compatibility.

TupSight is based on NDIS (Network Driver Interface Specification) as the application programming interface (API) for network interface cards (NICs), and a virtual NIC has been created for its operation. Just single-click the “Continue Anyway” button each time the “Hardware Installation” warning appears until the end of installation.

3. Why the data captured by TupSight are from/for my local host but other computers?

TupSight has two operation modes, i.e., the gateway mode and the side-route mode. By default, TupSight operates in the gateway mode, acting as an Internet gateway for the LAN. When working in the gateway mode, you must configure the default gateway IP address for other computer hosts so that TupSight can provide them with Internet connection.

When working in the side-route mode, just input the router IP address to Gateway IP on the “Options” window, and click on Acquire MAC Address.

4.  After the computer hosts to be monitored are selected in the side-route mode, they are not able to visit the Internet.

You should check whether the external NIC and IP address are correctly selected.

1)  Logon the console as the system administrator.

2)  Open Operation View from the left bottom corner on the console.

3)  Single-click Config.

4)  Check whether the external NIC and IP address are correctly selected.

 

Important Notes: 

1) If there is a proxy program installed (usually on a server machine) and you want to install TupSight on the same server, please turn off or uninstall the program to avoid the disruption of the Internet connection, as a result of potential conflicts, or select any other PC to install TupSight.

2) On a LAN with an application-specific proxy server,  If you choose to monitor this proxy machine in the side-mode, it sometimes will disrupt the Internet connection. Please proceed with caution.

 

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 TupInsight 3.2       (All the functions are now integrated into TupSight)

 

1. What is TupInsight? Is there a difference between it and a spyware-based monitoring program?

TupInsight is an easy-to-install and –navigate 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.

TupInsight is an eavesdropping program that uses a packet sniffer to capture and analyze communication traffic over a network. This is very similar to wiretapping of voice transmission, or listening in on other people’s telephone conversations. On the other hand, a spyware-based Internet monitoring program, such as the well-known Eblaster or Spector from spectorsoft or Insight from Trisys, tracks a target’s web use or even general computer use by installing itself on the computer and sending the information via the network back to the program’s installer. This is much similar to implanting a bugging device on someone’s phone receiver. 

Like an implanted “bug,” spyware can be detected and removed from a computer using anti-spyware programs, and the tracked information blocked using a firewall that monitors outgoing connections from the computer.

Moreover, another function of TupInsight, with the same importance as Internet activity monitoring, is to tailor the online access control for the whole LAN on the level of individual computer hosts. 

2. What are the major functions and features of TupInsight?

The main functions and features of TupInsight can be summarized as follows:

A. Capturing all Emails sent/received on the whole local network 

TupInsight records in real-time all the Emails sent/received (including POP3/SMTP and HTTP protocols), and displays information such as MAC (Media Access Control) address (or adapter address), IP address, time sent/received, title, sender/receiver, attachment(s), content, and size.

B.  Snapshoting all the webpages viewed on the whole local network and copying all the
uploaded/downloaded files (FTP protocol)

TupInsight provides the snapshots of viewed webpages for an administrator to preview and stores copies of all the FTP files. It also shows other information such as title, site, visited time, and size.

C.  Monitoring chat sessions (such as Yahoo, AOL, MSN, and ICQ), game activities, and other use of online applications self-definable by the administrator

TupInsight logs online activities to show the host information, tool used, time online/offline, and data flow.

D.  Enforcing web access control according to the administrator’s customization

TupInsight can freely set privilege rights of web access for and monitoring action on different classes of hosts in detail. It restricts all or specific online activities for an individual host, a workgroup, or the whole network, in specific time periods, with preset blocking lists. TupInsight has the filtering function to forgo monitoring a small special group of hosts.

E.  Scanning and detecting host names for networked computer

TupInsight automatically collects and analyzes the available data of computers on the whole local network to reveal their host names, IP addresses, and MAC addresses, and classifies the captured messages into categories for different hosts.

F.  Based on the client/server architecture to support distributed management of data

TupInsight adopts the separation of server and client program to achieve levels of data distribution.

G.  Featuring an easy-to-navigate user interface

TupInsight implements a hierarchical design in order to group related items together. Its straightforward interface makes it easy to add, view, edit, and categorize data and information.

3. What differentiate TupInsight from the similar products?

From the very beginning of developing the product, what TupInsight had envisioned was a feature that would allow a small & midsize business owner or executive director in an organization to do Internet monitoring and blocking without third-party participation, while enabling distributed management of data by sharing different levels of access privileges with their subordinate managers. Indeed, a complicated product, such as Websense Enterprise, is gorgeous, but it is also at an unbelievable cost (as compared to that of TupInsight) and needs to add a dedicated IT staff operating and maintaining the system.

Furthermore, the hierarchical design of TupInsight and its straightforward interface make the task of employee Internet management (EIM) very nearly painless. 

4. Is it legal to monitor employees’ Internet habits at work?

“Federal law here in the U.S. clearly states that the computer system is the property of the employer and as such the employer has the right to monitor all e-mail activity and Internet activity,” according to Nancy Flynn, executive director of The ePolicy Institute, a Columbus, Ohio-based consulting firm, and author of “E-Mail Rules.”

5. Why the data captured by TupInsight are from/for my local host but other computers?

If properly installed, TupInsight (of the unlimited version) should catch data from all the computer hosts on a LAN. Since TupInsight is an eavesdropping program, whenever possible the TupInsight engine is always installed on the gateway machine (using NAT or proxy) so as to capture data from all the computer hosts on the local network. If the gateway device is a router rather than a computer, the engine should be installed on a host sharing the same network segment with the router.

If only the data from/for one computer (in your case, the local host) are shown on the TupInsight console, the most probable explanation is that your local host where the TupInsight engine is installed is connected to the LAN via a switch, a device that filters and only forwards packets to the designated host.

The following three schemes explain how to select a computer host for the TupInsight installation, with Fig. 3 representing the most common solution.

Case one:  If the networking infrastructure is a traditional shared hub-based LAN, the TupInsight engine can be installed on any computer host on the network. See Fig. 1.

 

 

Fig. 1. On a traditional shared hub-based LAN, the engine can be installed on any host machine.

Case two: The switched infrastructure is now the de facto technique used to build local area networks. Unlike hubs, switches prevent promiscuous sniffing. However, you can still install the TupInsight program on your Internet gateway, a proxy server or a PC shared the same Ethernet segment with the router (see Case three). Any Internet traffic will pass through the gateway and therefore TupInsight could catch/restrict them. Since most modern switches now support “port mirroring,” it also allows a network administrator to monitor LAN traffic on any computer connected to one designated switch port. To select a switch follow the link SwitchReference.

 

 

Fig. 2. On a switched LAN, the engine is installed on the gateway machine or a host connected to the “management port” of the top-level switch.

Case three: If the Internet gateway is a router rather than a computer, the simplest and most common solution to capture and block web traffic is to place a shared hub between the router and the top-level switch, as shown in Fig. 3. For any Internet bandwidth less than 5 Mbps, as in the case of most small & midsize business networking infrastructures, this will not exert any negative impact on the Internet access. The typical bandwidth for those networks is less than 1.5 Mbps. Unfortunately, many "hubs" are actually switches these days. The following useful links,  HubReference, Capture Setup, and CaptureSetup/Ethernet, tell you how to select a real hub,  rather than a fake one, and how to setup a capture. 

We have some real Ethernet hubs (NETGEAR DS series) in stock, you can contact us @support.

 

 

Fig. 3. If the Internet gateway is not a computer, the most common solution is to add a shared hub between the router and the top-level switch.

6. Why the TupInsight program installed on my computer could not capture any data at all?

There are several possibilities:

1.  You did not restart the PC after the installation of the TupInsight engine. Certainly, you can always manually start the engine, without shutting down a PC, from Services in the Administrative Tools dialog from the Windows Control Panel.

2.  You did not set up the monitoring adapter. Here, the monitoring adapter is the network interface card (NIC) on the host where the TupInsight is installed. If there are two adapter cards on the host, e.g., one for the internal and the other external connection, you should select the one connected to the local network.

3.  You did not configure the connection ports to be monitored on a LAN when using a non-NAT proxy server for Internet connection sharing.

4.  Although the packet-sniffing program on which the TupInsight is based supports most of network adapters, it does not work for some specific wireless, USB, or PCMCIA cards.

5. Improper firewall settings interfere the operation of TupInsight programs. 

7.  How can I upgrade TupInsight to a newer version?

You can follow the following procedure:

1.  Download the newer version of TupInsight from www.tupsoft.com.

2.  Backup the monitoring settings into a file.

3.  Uninstall the existing TupInsight programs.

4.  Install the newer programs.

5.  Restore the monitoring settings from the downloaded file in Step 2.

 

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