In the past few months, quite a few people have asked me this question: “I bought a VPS from provider X, turned up a BGP session with them and my routes are all marked unreachable”. Today’s post will hopefully shed some light on what causes this phenomenon and how to deal with it.
Backing up OVH Public Cloud instances using snapshots
OVH Public Cloud platform is based on OpenStack software. As such, it has an API using which many procedures can be automated. Today I will be showing how to automatically create whole server backups using snapshots.
Configuring Tunnel Broker BGP on Mikrotik
Hurricane Electric’s free service Tunnel Broker allows one to set-up 6to4 tunnels in order to get IPv6 connectivity to IPv4-only sites. In addition to “regular” tunnels, where they assign you a random prefix from their ranges, they also support BGP tunnels. Today I will show you how to set one up and configure it on a…
Postfix: Routing outgoing email based on sender domain
I was in a situation where I needed to implement a mail routing policy: Outgoing email from a specific domain gets routed through a relay (eg. Amazon SES) and all other goes directly.
Compiling nginx with PageSpeed and naxsi
Today we are going to compile nginx web server with naxsi WAF (Web Application Firewall), Google PageSpeed modules and HTTP/2 support.
Nginx reverse proxy with code injection
Using nginx as a reverse proxy is very easy to do and there are many guides on the internet on this topic. However there’s not a lot of content regarding modifying proxied data on-the-fly. Here’s how to do it
Getting WordPress article thumbnails using SQL
I recently did a project where I needed to get post featured images from a WordPress site using MySQL. Of course I wanted it to be efficient, which meant I had to do with just a single SQL query to get the information I wanted.