If you used a PPA or added an external repository in Debian 11, Ubuntu 22.04, chances are that you recently have been seeing a message like this every time you run apt-get: This is a warning that apt-key is printing out. The tool has been used to mange the list of keys used by apt […]
Motivation You are using uncomplicated firewall (ufw) and you realised that your docker web app is accessible via the internet regardless of the status of ufw, then this article is for you. I try here to answer two questions: Why does not ufw work for Docker containers? The answer is very simple, both ufw and […]
Several months ago, I finished reading “The Phoenix Project” by Gene Kim, George Spafford, and Kevin Behr. The book tell the story of an IT operation engineer, Bill Palmer, who get a sudden promotion and have to deal with all sorts of complications and difficulties while being under immense stress during a pivotal moment in […]
Recently, I was asked by a customer to help recovering a password of a VeraCrypt encrypted volume they lost access to. I did not wanted to fire a password cracking software like JohnTheRipper or HashCat with brute force attack because that should always be the last resort. The recommended approach for this particular case is […]