irom's Blog

Posted on: March 9, 2016

I’m using mini-PC Brix from Gigabyte in my home lab since middle of 2014. It’s size of palm hand. I’m using it with SSD 250GB disk and 16GB memory. I started with vSphere 5.1 installed but recently reinstalled to Ubuntu 14.04. I found out that VMware is more ‘resources demanding’, specially new versions 5.5 and 6. I also experienced  difficulty to obtain all evals I wanted to play with. Not to mention that it was almost impossible to use my USB 1TB disk other than assigned to on of the VMs.


On Ubuntu I am using KVM and VirtualBox for virtualization and can do pretty much the same as I did on vSphere. Plus  connecting and sharing external USB disk is very straightforward. The only disadvantage is that I do everything with command line. Recently I learned that I can do even better with free Proxmox VE. It’s based on KVM and gives very intuitive web gui.

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I’ve not posted anything in last 3 years. I can see few drafts from June of 2015 which I never published. In Dec I posted my article about developing software for firewall or  rather Linux based network device monitoring at Indeni. I will be posting at soon, added ‘Automation’ to the posts categories here.

Full Stack

I’ve done a lot of programming in 2015, mainly Python and JS and Node.js. I’m in the middle of my full stack journey. I hope to improve my blog visually with what I’ve learned in the area of JS Front-End Development.

Lemmings are small rodents, became the subject of a popular misconception that they commit mass suicide when they migrate.


Recently I found in polish newspaper (also here)  that because of their association with this odd behavior, lemming “suicide” is a frequently used metaphor in reference to people who go along unquestioningly with popular opinion, with potentially dangerous or fatal consequences like gay marriage supporters

Last year I’ve seen news about IOU – Cisco IOS running on Unix. I was using GNS3 in the past, had not time to try IOU until last weekend. I’ve created Amazon EC2 Ubuntu instance with half of GB memory and run 3 routers connected with LAN interface. It worked great, see below

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One of many processions in Warsaw

Photo taken from

According to wiki, onion routing is a technique for anonymous communication over Internet. Messages are repeatedly encrypted and then sent through several network nodes called onion routers. Like someone unpeeling an onion, each onion router removes a layer of encryption to uncover routing instructions, and sends the message to the next router where this is repeated. This prevents these intermediary nodes from knowing the origin, destination, and contents of the message.

All you have to do is to install it and start Tor browser. Quick IP Chicken test show new IP address. It’s pretty slow but  reliable. It prevents eavesdropping and traffic analysis attacks (‘Go Online without Getting Snooped’ )