Category Archives: Technology
Be better at subnetting and routing
In traditional subnetting, you divide a network into equal-sized subnets using a fixed subnet mask. For example, if you have a Class C network (e.g., 192.168.1.0/24), you can divide it into multiple subnets, each with 256 (2^8) addresses. By mastering IP subnetting techniques like VLSM, Supernetting, CIDR, and summarization you can use IP addresses with…
What is HTTP/3?
HTTP/3 is the third version of the Hypertext Transfer Protocol (HTTP), a networking protocol used to exchange information on the World Wide Web. HTTP is used to request and transmit data over the Internet, and is the foundation of the modern web. HTTP/3 is an improvement over HTTP/2, which was released in 2015. HTTP/3 is…
How to set up Fail2ban?
Fail2ban is a security tool that can be used to protect servers from malicious login attempts and other types of attacks. It works by monitoring log files and banishing IP addresses that show suspicious activity, such as repeated failed login attempts. Here is a tutorial on how to set up Fail2ban on an Ubuntu system:…
How to start with Jenkins
Jenkins is a popular open-source automation server that helps developers to automate parts of their development process. It can be used to build, test, and deploy software projects continuously. Here is a tutorial on how to get started with Jenkins:
Virtual Private Networks
Virtual Private Network (VPN) technologies are used to establish secure and encrypted connections between devices and networks, typically over the internet. VPNs can be used to protect data privacy, bypass internet censorship, and access restricted content. Here is a comparison of some popular VPN technologies: OpenVPN: OpenVPN is a free and open-source software application that…
How to Install and configure Pritunl server
Pritunl VPN with WireGuard and OpenVPN