Author: Remus Sferle

SSH Connect to a Kali Virtual Machine in Virtualbox

Kali is a great learning tool for learning cybersecurity, especially the red-attacking side of it. For the longest time, I had trouble running the Kali VM on my rather old Thinkpad X1 Carbon, as the image consumes quite a few resources. There is a way to use most of Kali’s tools with little resource consumption:…… Continue reading SSH Connect to a Kali Virtual Machine in Virtualbox

Raspberry Pi NAS with Open Media Vault and Plex

Ingredients: Raspberry pi 4 – I used one with 8Gb of RAM with whatever case is available1 or 2 external hard disk drives (HDDs) – if 2 are used, a powered USB hub is required, as the pi does not provide enough power for more than 1 HDDof note also, no RAID configurations are possible…… Continue reading Raspberry Pi NAS with Open Media Vault and Plex

CompTIA Security + Study Notes: Cryptography

Cryptography is as old as the desire of humans to communicate secretly. A famous example is that of the so-called Caesar cypher, named after Julius Caesar. He used to encrypt his correspondence by shifting the letters of the alphabet to the right or left an agreed-upon number of spaces. Cypher disc Image Credit: Cypher disc…… Continue reading CompTIA Security + Study Notes: Cryptography

Network + Study Notes: Open System Interconnection (OSI) Network Model

Computers have a very particular way of communicating with each other. For example, before widespread computer networks and the internet, people shared files by “sneakernet”: wearing a comfortable pair of sneakers and putting the info on the storage media and travelling to the destination computer to copy the data. This is not a very effective…… Continue reading Network + Study Notes: Open System Interconnection (OSI) Network Model

Tweaks on Home Computer (Mostly GNU/Linux)

I have some peculiarities for my desktop setup that I use every time I reinstall a new OS. So instead of researching how to do the setup all over every time I reinstall an OS, dual boot, or distro hop, I will throw them all in a blog post and save some keystrokes and a…… Continue reading Tweaks on Home Computer (Mostly GNU/Linux)