Author Archives: Varun Priolkar

Free wildcard certs with Let’s Encrypt & DNS auth ft. Route 53

By | 17th May 2018

Everyone’s favorite SSL certificate authority Let’s Encrypt recently announced support for wildcard SSL certificates on their forum here using the ACMEv2 API. Wildcard SSL certificates still cost as much as $150-300/yr on the market. Getting them for free is a huge bonus. Install Certbot Grab the Certbot tool for issuing Let’s Encrypt signed SSL certificates.… Read More »

Multi-WAN failover without session termination

By | 5th April 2018

One of the reasons why people run BGP is when reliability is of utmost importance and sessions terminating abruptly can simply be not afforded, especially in cases like VOIP. However this is an expensive proposition both cost and skill wise. There may be a middle ground between this and simple failover with multiple uplinks. That… Read More »

How to fake pings and traceroutes

By | 21st April 2017

I recently read Srijit Banerjee’s excellent article, which brought to light ugly things done by service providers to fool their customers who have grown accustomed to the ping google.com command to judge the quality of the internet. While he has strayed away from how this is done, I feel that educating people on how this… Read More »

10 Gbps network for less than $60

By | 12th March 2017

I needed a fast connection between my NAS and my VM server. So I set on to the mission of doing 10 Gbps network connectivity for as cheap as possible. This is mainly to run iSCSI for VMs. I had looked at Infiband as well. However driver support was poor and things aren’t guaranteed to… Read More »

How to fix “Not logged into Rocket League servers” error on Linux

By | 28th January 2017

Encounter the “Not logged into Rocket League servers” error while trying to get online on the Rocket League game on Linux? Here’s a fix. Rocket League needs SSL to communicate with their servers. So the first steps would be to: Make sure the system time and date is correct. I use UTC hardware clock. Make… Read More »

How to use AMDGPU driver for Southern Islands and Sea Islands card on Ubuntu Linux

By | 19th December 2016

These instructions apply only for GCN 1.0/Southern Island cards and GCN 1.1/Sea Islands cards. You can check if your card falls in this categories here. The AMDGPU driver is a newer driver for GNU/Linux and promises better performance and Vulkan support. You will need to do two steps to make it work. Userspace drivers –… Read More »