LayerView: Application Preferences.

LayerView's Application Preferences dialog allows you to change various global program settings. To access it, open the Tools menu and select Preferences....
The options available are:
  • Perform name lookups: This affects how addresses are displayed throughout the program. Allowing LayerView to perform name lookups will convert IP addresses into their associated host names, however note that a DNS lookup is required to do this (hence it may show up on your packet trace). Note that LayerView will throttle its name lookups to prevent itself from using too much bandwidth.
    If you opt to perform name lookups, you can select how addresses will appear in the Low Level and Conversations views using the drop-down lists below.

  • Use promiscuous mode packet sniffing: When selected, LayerView will collect every packet that it can see, not just packets which are directed to the network card it is monitoring. This means that you can monitor data sent/received by other users on the network. Note that this is usually only supported by wired connections.

    For LayerView to be able to receive other users' packets, the network card needs to have access to every packet. If you are on a hubbed network then this is always the case since every packet is sent down every port in the hub. If you are on a switched network, then packets are usually only sent to the port with the correct address, ensuring that only the intended recipient gets the data required. Therefore your network card only has access to packets which are bound to the local system. However, some network switches have a mirror or monitor port which is specifically designed for this purpose: all packets on the network are re-broadcast through that port, allowing LayerView full access to all users' network traffic.
    Most wireless networks do not support promiscuous mode packet sniffing. If you get no results at all then your netowork card probably doesn't support promiscuous mode.

  • Read packet buffer: Controls how much data is read from the low-level driver each time. Usually you should not change this, but if you are on a particularly high-traffic network then you may notice a performance boost if you increase the buffer to 1000 Kb.

  • Reset dialogs: Resets the saved response to each dialog where "do not ask me this again" has been checked.