WisMon : A Wireless Statistical Monitoring tool
A GUI is provided to access these parameters. A list of current observed stations is displayed. From the list, a station and the required parameters can be selected. A new window appears showing the requested information (last 30 seconds). Historical data is saved periodically to enable analysis afterwards.
Notes - WisMon has only been tested with atheros-based cards, using the madwifi driver. However, it should work with other cards which allow promiscuous mode.
Probes are devices in charge of capturing the packets within the wireless coverage area, and extracting the required parameters to transmit to the packet processor. A probe is a station with at least two interfaces: one wireless 802.11 and one wired ethernet. Packets are captured in promiscuous mode on the wireless side; each packet timestamp is correlated with the beacon of the associated AP, and then specific parameters are extracted to transmit to the main packet processor. Currently, this is done with a modified kismet server (see Installation section). Each probe listens for connections on the wired interface used to transmit the processed data. After a connection is established, data is pushed at the acquisition rate. Passive monitoring is used, i.e., since the interface is in listening mode.
The Packet Processor
The Packet Processor is a server istself, whose main objective is to get statistics from the received packets. The Packet processor connects to the different probes and starts receiving the processed packets, which are classified by MAC address. For each recognized station, the following parameters are currently collected:
The Graphical User Interface
The GUI is based on a main window with a list of stations and a child windows to display the processed data. The main window contains the list of recognized MAC interfaces, with a summary of current values. A new station is added when a packet whose source or destination are new to the server. If the server has been running for enough time to see at least one packet per station, then the full station list will be available. To select a station, it must be highlighted. The requested parameters must also be chosen from the select boxes on the right. Only two simultaneous parameters can be selected to be displayed now. There is an offline mode which allows to review history information about any parameter from a selected station.
Source distribution of WisMon for linux, are available: wismon_client-0.1-R3.tar.gz
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