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Posts published in “Software”

VmcsAuditor – A Bochs-Based Hypervisor Layout Checker

Sina Karvandi 0

  Introduction  If you’ve ever had experience with developing your own hypervisor from scratch then you definitely faced with the problems of layout checking. What makes it hard to develop a hypervisor is the fact that Intel has a small number of errors for a huge checklist described in [CHAPTER 26] VM ENTRIES from Intel’s 64 and IA-32 Architectures Software Developer’s Manual including: 26.2 CHECKS ON VMX CONTROLS AND HOST-STATE AREA 26.3 CHECKING AND LOADING GUEST STATE  26.4 LOADING MSRS 26.5 EVENT…

Introduction to systemd : Basic Usage and Concepts

Shahriar 0

Hi everyone In this post I am going to explain some essential systemd commands and concepts. As systemd popularity grew much more and changed the linux ecosystem drastically, every sysadmin, DevOps or every casual linux user should know the basics of this init system (It’s really a load of other things too!) and be able to use systemctl, journalctl, etc in order to leverage its power. For example, by using systemd unit files you can completely get rid of using…

Getting started with Python and Qt for cross-platform GUI apps

Shahriar 1

Hi everyone, in this blog post I want to explain how to start developing desktop applications using Qt and Python. We will use PyQt5 module in order to connect Qt with Python. Qt was originally designed for use with C++ but it has many benefits which helped its growth and compability on all major desktop platforms (Windows, Linux, Mac OS). A link to a sample program I created is also given at the end of the post in order to…

Bind9 chroot on debian 8

Shahriar 0

From Wikipedia: BIND, or named, is the most widely used Domain Name System (DNS) software on the Internet. On Unix-like operating systems it is the de facto standard. As you know chrooting a process is very beneficial for security as any compromise cannot have effect on the whole system. But be aware escaping from chroot is not impossible. and therefore should not be used as your only security measure on a production DNS resolver. Chrooting Bind is simple, however there…

Useful Configs for Squid3 Cache

Shahriar 0

Hi everyone! After searching the web so many times and testing different configurations of Squid, I have found these minimal working configs which you can use to achieve the features you want from Squid3 Cache (which is really robust and powerful btw) Read more for config…