I was recently approached by the sales team to explain the benefits of the cloud and, more importantly, why automation is such a game-changer. It struck me that the concept of DevOps still isn’t fully understood by everyone. To put things into perspective, I remembered how, back in the day, setting up a LAMP stack…
It has been a while since i have written here and lately i was kinda struggling to import and have meaningful modsecurity data in ELK. Long story short the easiest way is to convince Modsecurity to write the data in json format. In this way all the “parsing” and importing becomes more easier. Otherwise…
I’ve using Qmail since 2013 and it was a great companion. I’ve added so many custom scripts in it(or in this ecosystem) that it will take me days just to write about it. Unfortunately for some time already I’ve started to feel the end is near for Qmail. Here is way(just few of them): A…
I’ll need to be honest and say that I’ve search for a long time an “easy” way to restrict IMAP logins / per user / per country. During my search around this topic i’ve also found allow_nets which is a nice feature but it only allows you to restrict per user / per ip or…
There are a lot of articles regarding DMARC so i will not start again about what it is and what is useful for. Also i will not talk about the drawbacks when it’s implemented. I will instead give you a hint about where to generate a DMARC policy and where to verify it. Until you…
GENERAL RULE: always back-up and always use maintenance windows. On a busy server with lots of scripts and programs installed this task might become quite hard since you don’t know from where the problems can appear. If you look on the official documentation you will find that in order to upgrade perl-core you should upgrade…
You will find a lot of documentation regarding those but almost nowhere is explaining you that by just un-commenting these in spamassasin config files will not have those working. In order to work you will need to install separate packages from different vendors. In order to use the above for spamassassin you will install only…
I’ve struggled for some time with find mtime/atime/ctime but the results were not so confident sometimes and this is because how Linux is operating. If you want to delete all the files between 2018-06-01 and 2019-01-01 you need to: 1) create two files with these dates touch -amt 201806010000 ref1 touch -amt 201901010000 ref2 2)…
Tutorials on how to install nagios to collect data from ESXi for Redhat/Ubuntu you can find plenty on internet. Unfortunately is not the case for Gentoo. What you need to know that is not impossible and fairly easy (once you get it done). Here the steps: 1) Download VMware-vSphere-Perl-SDK-6.5.0-xxxx.x86_64.tar.gz from VMware site. 2) Once you…
Back-up the VM ; this is way you have a VM so you can clone it easily or using a back-up tool Remove the connected interfaces and test your back-up ; you never know Boot from live CD ( since most of the operation that need to be done you need not to have mounted…