This article offers a 5 min howto about configuring your own DNS server (perhaps for your company or maybe for your home network) using DNSmasq. Obviously, only the surface is covered on this post.
Given my router does not allow me to add host entries for local DNS resolution, I decided to use DNSMasq on one of my internal network … Read more
There are different methods to run queries against an SQL Server from a Linux machine. The one I am using is mssql-cli (https://github.com/dbcli/mssql-cli)
As you can check in the related github website, it has the following features:
- Syntax highlighting
- Query history
- Configuration file support
- Multi-line queries
The -Q parameter
It has been packetized for a lot of distributions … Read more
If you are a Git user, you can find very useful this custom prompt.
Shows working branch when it detects the current folder is a git one:
user1@labdebian ~/data $
user1@labdebian ~/data $ cd ../myproject/
user1@labdebian ~/myproject (master) $
user1@labdebian ~/myproject (master) $ git checkout -b branch1
Switched to a new branch 'branch1'
user1@labdebian ~/myproject (branch1) $
… Read more
Dont be afraid. Joining a linux machine to a windows active directory domain is not difficult. This post explains step by step how to join a Debian or Ubuntu linux machine but it can applied for other distributions without much different commands.
Install needed packages
apt-get install realmd
It may happen that the command returns an error like … Read more
If you are in process of securing your web server or site, there are some tools and online resources that can help us a lot (in one of the following posts will show you some of them).
But simply using the command the fantastic nmap tool, another interesting feature is listing the available cipher suite certain site offers using the … Read more
If you need to trace the HTTP request and response headers by capturing the related packets, you can use tcpdump in this way:
tcpdump -i ens192 -A -s 10240 'tcp port 80' | grep -v IP | egrep --line-buffered "..(GET |\.HTTP\/|POST |HEAD )|^[A-Za-z0-9-]+: " |sed -r 's/..(GET |HTTP\/|POST |HEAD )/\n\n\1/g'
For example, filtering tcp port 80 and 192.168.10.100 IP address:… Read more
In this 7th post of the Home Server series, after having configured a SSD drive, a working ESX environment and the RAID disks, let’s create our first virtual machine based on Debian Linux.
For the goal we want to achieve (hosting a web server, our personal files, personal streaming server, …) we do not even need the graphic … Read more
I enjoy doing my own projects, mostly technological motivated by my passion for my profession, and the one I really wanted to do (I began it ending last year 2017) is my own home server.
With this one, I begin the first of many posts relative to the installation / configuration of a home server with the following ideas and … Read more
In the previous post I explained what is the difference between Icinga active and passive checks, why can be interesting to use passive checks, what is the result format Icinga is expecting when processing those checks and the way I use to send those results (instead of using snmp traps).
Now it is time to show how to configure it … Read more
As I posted long time ago for Nagios (Nagios – Using passive checks without agent), it is time to show an easy way to configure Icinga to perform passive checks (without using SNMP traps).
This is the first of two posts. In this I only want to make some theoretical explanations and then in the second I will … Read more