Software defined radio mesh network for active network management [Active SDR-MESH]

Short overview of a university project from some time ago.

The idea was to be able to measure the signal at various points, correlate with data from the GPS receiver and display the signal level; for a specific spectrum at a current location.

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Connecting to Azure via local PowerShell [Windows 10]

So to make life more interesting we will try to manage our Azure resources via PowerShell, running on our local workstation with Windows 10 Pro.

Before going to the details, its nice ot have updated help, which is done by typing:

To connect to Azure, there are some basics steps, before typing

There are some modulels that need to be installed and in order to do so, the appropriate policy should be set on your local instance:

After that, some modules must be installed

Wait some time, after which you could import the modules:

After that, connecting to Azure is as simple as typing:

Then you will be prompted to enter your Azure credentials on a form like this:

And in the end you should get something looking like this displayed on your PowerShell CLI:

You can also test by typing:

Which will dislplay all resouces, available within the current env.

Connectivity overview for the lab

After some time spent installing, configuring, reading and rebooting, the lab is going quite well. Also, it might look like there are too many tools or too many solutions with overlapping capabilities, but its all in the name of lab testing :).

 

On the bellow diagram,  you could find the connectivity overview of the lab – inculind the on-premise secion and the two public clouds that will be integrated.

In future posts, there will be more info how to configure some of the components, for example the virtual router of MicroTik and so on.

Fix: Windows 10 installs various apps and games without asking

So Windows 10 includes a new feature that automatically installs apps from the Windows Store because it wants to promote some of them. Usually, not a problem, but can be of annoyance. Fortunately, there is a quick solution:

  1. Open Registry Editor
  2. Go to
    1. HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CloudContent
    2. if the value is not present, you will need to make one
  3. Create a 32-bit DWORD value for the key:
    1. name: DisableWindowsConsumerFeatures
    2. value:1
DisableWindowsConsumerFeatures
DisableWindowsConsumerFeatures

Restart the computer.

Life span of a Linux user/ basic Linux user management

Bob comes into the company and wants to use Linux as his main Operating system.

Some of the basic moments in the lifespan of his user on Linux are: user creation, group adding, SELinux user related activities, deletion, etc.

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Fix: Fedora 25 Server stuck at “Setting up installation source” [probably Bug 1048344]

Fix: Fedora 25 Server stuck at “Setting up installation source”

Installation started, everything selected and you end up with the following screen and ongoing process of “Setting up installation source”.

Stuck at setting up installation sources fedora 25 server
Stuck at setting up installation sources fedora 25 server

Possible problem, that can cause this is related to the networking (or the lack of decent connection in this case). Probably caused by Bug 1048344, more info on which can be found here.

So after removing the virtual switch, everything continued flawlessly 😊.

Series: Security testing

Series: Security testing

Purpose:

  • Analyze various malware [viruses, trojans, keyloggers] in sandbox environment
  • Penetration testing [web applications, system testing]
  • Intrusion prevention/ detection system deployment, usage and testing
  • Vulnerability management
    • Testing vulnerability management solutions
    • Testing vulnerabilities them selves
  • Policy compliance

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Series: Gaining some Linux traction

Series: Gaining some Linux traction

Purpose:

  • Delve into Linux system administration
  • Practice installation, configuration, and other package/ program management tasks
  • Test networking and security
  • Gain additional experience in administering *nix systems
  • Enjoy VIM and try out EMACS
  • Gather some scattered knowledge
  • enjoy while building, breaking and fixing

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Series: Compact corporate environment

Series: Compact corporate environment

Purpose:

  • troubleshoot common problems found in complex environment
  • gain additional experience
  • test new products and features
  • develop some PowerShell and Desired State configuration scripts
  • go through the design and deployment phases
  • enjoy while building, breaking and fixing

Continue reading “Series: Compact corporate environment”