Tiny Core Linux on a USB stick

The Linux live CD or USB stick is not hot news. But, having the full installation running from a USB flash drive that acts like a hard drive is the difference. All you need is any PC with the boot from USB capability and 128+ Megabytes of RAM.

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Configuring a FloppyFW router

I successfully built a new VM that will serve as the ADSL router in my virtual lab. As the next step, I needed to configure it with specific parameters for my virtual lab. I will guide you through the configuration process for this scenario.

The good news is that the whole configuration for FloppyFW is stored in only one single file named config. This file is placed in the root of the floppy image file. Continue reading

A new “ADSL” router in my virtual lab

I keep looking for ways to improve my virtual lab and made it as realistic as possible. Although using Mikrotik routers is enough to build a large infrastructure, it’s not completely accurate with the real world experience – Mikrotik routers always work.

In the real world, we often need to connect a Mikrotik router either directly to other types of devices or even behind an exotic grandma’s home appliance. On the other hand, this is the lab and I don’t need any fancy features in such software. I want to save every megabyte of RAM or disk space on my laptop.

My search was fruitful and I found the perfect candidate – FloppyFW. This is the fully functional Linux-based router/firewall that can fit on a single 1.44” floppy disk.

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Trojan on my Android tablet after the factory data reset

At the end of 2017 I decided to reset my Android tablet. I used it as an auxiliary on-field device. There was no important data on it, but it could do with a clear down, a fresh start. The factory reset is a very easy task on Android devices.

I ran the reset task, it restored my device to a clean state and everything looked fine. I spotted McAfee anti-virus on it and ran it just for fun. It updated itself, started the scanning process and alerted me of the threat. I had a Trojan virus on the factory reset device.

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Reading file details on the Windows Core system

If you want to view a file details in Windows with GUI, you need to right-click on the file in Explorer, select Properties from the context menu and then click on the Details tab. Easy.

Can you do the same task using only the command line? With a little magic and a few mighty tricks you can do that, too.

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Windows Update failed with the error code 8024402C

I have a very strict policy that servers must not access the Net. If a server needs to be accessible from the Net, it will be placed in the DMZ zone with very rigid firewall rules. To update all servers, I need to implement the WSUS server in the local network.

I never let servers update automatically. Rather, I let them notify me about available updates and then I will manually run an installation process.

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Reading system parameters using WMIC

A few months ago, I had a need to find the serial numbers on a few servers. This number is printed in small size letters either on a tag or sticker placed on the computer case. In most cases, that sticker isn’t visible without extracting the server from the rack. Too much hassle!

Luckily, virtually every brand name machine has its serial number inside the system’s BIOS. We just need access to that information. So, the information is there, but we can’t read it easily. The answer is to use WMI.

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