hacks

Wrapper scripts for LXC unprivileged containers

Index Part 1: Introduction Part 2: Basic configuration files Part 3: Creating an unprivileged container on Slackware Part 4: Scripts overview Part 5: Natting example Browse the scripts' folder Handling LXC unprivileged containers can be quite annoying. In fact, you have to run each command as the user who...

Converting a Linux installation to a Slackware one in an OVH Kimsufi server

This article explains how to convert a given Linux distribution to a Slackware one in an OVH kimsufi server. It is based on the Slackware wiki page Install Slackware on an online.net Dedibox BareMetal Server, which explains the same for a Dedibox...

Denying bad DNS HELO/EHLOs

The RFC-821 Section 3.5 states that  The sender-SMTP MUST ensure that the <domain> parameter in a HELO command is a valid principal host domain name for the client host. As a result, the receiver-SMTP will not have to perform MX resolution on...

Playing with qmail-spp

qmail-spp provides plug-in support for qmail-smtpd. It allows you to write external programs and use them to check SMTP command argument validity. The plug-in can trigger several actions, like denying a command with an error message, logging data, adding a header...