A client of ours has an issue that at around 12pm and 4pm they have problems with their internet via wifi, everyone connected via cable is fine. They are still connected to the wifi router, signal strength is fine, but that cannot even ping the router, this lasts for about 15 minuets then the issue resolves itself.
We have installed another AP as a test and users connected to either of them have the same issue at the same time. They are both located in the same part of the building.
We believe there must be some kind of interference, so we have put a windows XP machine in the Office with a Wireless dongle so we can run some scans/tests.
Can anyone suggest the best piece of software to use to find what is causing the interference? Preferably free.