Ping with timestamp

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In windows powershell ping.exe -t 10.122.0.10 |Foreach{“{0} – {1}” -f (Get-Date),$_} MacOS i terminal ping -i 1 -c 10000 1.1.1.1 | while read pong; do echo “$(date -j ‘+%Y-%m-%d %H:%M:%S’) $pong”;done

Test roaming using wpa_cli on Linux

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When testing and debugging Wi-Fi networks it can be handy do be able to select what AP a client is connected to and maybe force a roam between AP. Using a Linux configured with spa_supplicant this can be done using the wpa_cli tool. I often use a Raspberry PI running Rasibian for this Start by […]

Network “flight recorder” DRAFT

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In a trouble shooting case where the network (wired or wireless) is suspected to cause the problem you will need to see what is really happening. Wireshark is the tool for that, but if the problem is hard to reproduce capturing the incident can be diffifuelt. Use this guide to get a windows computer to create a […]

WifiHistoryView from NirSoft

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NirSoft has some nice little tools. Among them WifiHistoryView that does a fine job of extracting the history for a clients wifi connection. Very handy when working on a Wi-Fi trouble shoot. The tool can be started by a normal user without admin rights. http://www.nirsoft.net/utils/wifi_history_view.html

Getting started with Wireless Wireshark

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Wireshark is an important tool in any system engineers toolbox. An application that is able to capture and decode the network packets from multiple layers of the network stack. Wireless Wireshark requires a little extra work to be able to capture the airborne layers of the stack and select the correct channel(s). This article will show how to prepare […]