Typical installation layouts

Before getting started with LanDetective, you'll need to understand how it works. Please take a note of the fact that LanDetective Internet Monitor works on the same principle as do regular network traffic analyzers/sniffers. The application analyzes Internet traffic in your local network segment. Thus, in order to get the ability to monitor data transferred by other computers you will need to make their network traffic visible to you.

Using LanDetective to monitor hub-based LAN
Hubs are commonly used to connect segments of a LAN and hub-based network is a simplest network environment. With a hub-based network, LanDetective Internet Monitor can be installed on any host in LAN. The entire network traffic transmitted through the Hub will be captured by LanDetective.
Internet Monitoring and Traffic Analysis in a hub-based network

Using LanDetective to monitor switched LAN (managed switches)
Unlike a hub, a switch, when it has received a packet from some port, retransmits it only to one port, where the destination node is connected to it. In a switched network, LanDetective Internet Monitor may be limited to monitor your own network traffic, i.e. traffic on the computer the program is installed on. However, if you have a managed switch, it can be configured in a way that all packets passing through it would be replicated to a certain port. Different manufacturers call the function a different name: Port Mirroring, Switched Port Analyzer (SPAN), or Roving Analysis Port (RAP). In order to start traffic analysis after enabling of Port Mirroring, you will need to just connect to the specified switch port and use the promiscuous capture mode in LanDetective Internet Monitor.
Internet Monitoring and Traffic Analysis in a switched network with port mirroring

Using LanDetective to monitor switched LAN (unmanaged switches, case 1)
If you have an unmanaged switch you can install LanDetective Internet Monitor on the PC acting as a router/proxy/firewall.
Also, one of the ways to access traffic in a network built on unmanaged switches - connect the managed switch or hub to the network segment of interest where you want to monitor internet traffic (for example, before the router used for accessing the Internet).
Internet Monitoring and Traffic Analysis in a switched network

Using LanDetective to monitor switched LAN (unmanaged switches, case 2)
Another way to access traffic in a network built on unmanaged switches - use a software-based technology called ARP-Spoofing. This technique is based on weaknesses of the ARP protocol - the ARP protocol does not provide any protection from possible MAC fraud. With LanDetective Internet Monitor you can use ARP-Spoofing easily.
Internet Monitoring and Traffic Analysis in a switched network with ARP-Spoofing