Category Archives: Troubleshooting

OpenWrt, an alternative for improving network security at home with firewall and web proxy

Introduction OpenWrt is a Linux distribution that can be loaded into many wireless routers by replacing the original firmware with OpenWrt firmware. The picture below shows 2 such routers, together with Raspberry Pi on the right for comparison. My interest … Continue reading

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Utilizing color in ssh session (example with Android)

When using ssh to connect to “small” devices like android or raspberry, one might not have an option to install several packages. In those scenarios one can reuse the existing command line tools that are often included. This tip is … Continue reading

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PingInfoView, tool for monitoring network latency (ping)

There are several free tools for monitoring availability of multiple computers. However, it is surprisingly difficult to find a tool with the source code available. (For other needs, please look the discussion forums of your preferred programming language, there are … Continue reading

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Serviio, Tool for sharing your media and online resources

Serviio is one good alternative when looking for a DLNA media server. “It allows you to stream your media files (music, video or images) to renderer devices (e.g. a TV set, Bluray player, games console or mobile phone) on your … Continue reading

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TestDisk, Tool for recovering data and pictures on hard disks and USB drives

TestDisk is an free (open source) console based tool for recoving data. TestDisk includes another tool PhotoRec, which better for recovering photos from memory cards. (It is safer to recover files since it access USB drive as readonly.) It is … Continue reading

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SIW, Tool for showing System Information on Windows

SIW is great tool, a must have, for showing what your windows computer has: software hardware network Typical use is to check hardware related data like the number of memory slots, graphic card slot etc in the computer.   One … Continue reading

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Wireshark, Tool for analyzing network traffic

Wireshark is great tool, a must have, for analyzing the network traffic. An example capture is shown below from an http connection. It has features like “Flow graph” (below), and many many other features, like reading other capture formats as … Continue reading

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