In this article we will learn how to enable/disable firewall on Ubuntu 20.04 using graphic UI and command line. We will also learn how to flush firewall blocks. Manage Firewall (ufw) via GUI By default my Ubuntu 20.04 installation does not include firewall. So, first we will install firewall. Go to Ubuntu Software, find “ufw” […]
In this quick tutorial we will learn how to change Linux user password using command line. First we need to connect to the server using ssh. For SSH access one can use either build-in Linux, iOS and Windows terminal or standalone terminal like Putty client [download]. We are using Ubuntu Linux, so we will use […]
What if I say that the data of your credit card or biometric ID can be easily stolen just by staying nearby to you in the shopping line? If you take your credit card with you and enjoy using PayPass (contactless payments) then you are probably at risk. How can it be possible? To understand […]
We use our email address in different places, online and offline, and the more we use it the more marketing emails we receive. Here is a simple but useful trick to use to understand who leaks your data and maybe boycott these services and shops. About the trick When mail server receives an email, it […]
If you have ever used Cloudflare, you know how its proxy works. You point your domain to Cloudflare DNS and then on their side set real website’s hosting IP. Cloudflare will pass through all traffic through its network to your server. CDN node works same way – it sits between your visitors and the origin […]
We have already talked about difference between private and public domain registration and now it’s time to talk about why our privacy protection differs. Those who missed our article about private domain registration, follow this link to know more about it. The rest of you guys are invited to read below about our unique 2-Layer […]
Problem: Often public VPN services become a victim of hackers attacks – NordVPN, SuperVPN, LimeVPN were hacked and various data leaked.Solution: Running a private VPN server for your own use almost nullify risk of hackers attacks because it stays under the radar. For the convenience of use, this article is divided into 4 chapters. Content […]
When we create a new account at social media, an online shop or service, we are asked to create a strong password. What it means and how it’s measured if the password is strong or not we will describe in this article. How password strength is measured The password strength is defined by the password […]
DNS is a Domain Name System which connects your request for www.example.com to the server’s IP where www.example.com resides. In other words, when you enter in your browser www.example.com, your PC connects to the authoritative DNS server for this domain, requests destination IP and retrieve website’s content from the hosting server. What is DNS leak […]