From time to time our customers face DDoS attacks and one of the mitigation tools we use is Cloudflare. We have already described basic anti-DDoS settings in our previous article, but since then Cloudflare modified functionality of free accounts and it’s time to re-visit this topic. Initial configuration There are few things to keep in […]
Recently we have been testing WireGuard tunnel. And today we wanted to share with your our speed test comparison results of WireGuard and OpenVPN connection made on the same Pritunl server. To say the truth, we have been surprised by the results of our test. Speed test logic We wanted to test two protocols in […]
This is a follow up article after our recent guide about how to enable Wireguard tunnel on the existing Pritunl installation. If you remember we decided to write that article after we struggled enabling Wireguard. We manage to do it after trial and error. But before we made it we tried different settings. We were […]
In this article we will show how to add WireGuard support to the existing Pritunl OpenVPN installation. In case you are starting from scratch, you can first read our article about how to setup Pritunl VPN server and then come back here. There are instructions available about Wireguard and Pritunl, but the process is not […]
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 […]
