No war in Ukraine. Stop russian terrorists. Preface Fail2Ban is software that monitors system logs and blocks hackers after multiple failed logins. In addition, it protects servers against DoS, DDoS, dictionary, and brute-force attacks. Fail2ban bans the offending IP using the system firewall for a specific length of time. …

Stop the war in Ukraine. Preface. Infrastructure as Code (IaC) is the management of infrastructure (networks, virtual machines, load balancers, and connection topology) in a descriptive model, using the same versioning as the DevOps team uses for source code. …

Stop the war in Ukraine. — Preface. A digital watermark is a kind of marker covertly embedded in a noise-tolerant signal such as audio, video, or image data. It is typically used to identify ownership of the copyright of such signal. In this article, we will add a text watermark using FFmpeg. I will use Ubuntu 20.04…

No war in Ukraine. Stop Russia! — Preface GitHub Actions help you automate tasks within your software development life cycle. GitHub Actions are event-driven, meaning that you can run a series of commands after a specified event has occurred. For example, every time someone creates a pull request for a repository, you can automatically run a command that…

No war in Ukraine. Stop Russia! Preface. Commits to Git are accompanied by a commit message that explains what changes the commit has made to the code. However, a situation may arise where the commit message will need to be changed after it has been pushed. ​If a commit message contains…

No war in Ukraine. Stop russia! Preface Often, for security reasons, some services are created only on the internal network. At the same time, the issue of connecting to them from other networks becomes relevant. In this article, I describe SSH tunneling or SSH port forwarding. It is a method of creating…