Monitoring systems or how to get lost in fierce madness. There are many solutions to monitor systems and most of them have some kind of web interface to operate. Choosing the right tool for any job is a tedious task and for a newbie like me it is a bit harder, specially for a sensitive […]
Monitoring Systems (One)
Reasonable amount of enabled modules on Apache HTTP
CentOS Ubuntu FreeBSD core_module (static) core_module (static) core_module (static) so_module (static) so_module (static) so_module (static) http_module (static) watchdog_module (static) http_module (static) access_compat_module (shared) http_module (static) mpm_prefork_module (shared) actions_module (shared) log_config_module (static) authn_file_module (shared) alias_module (shared) logio_module (static) authn_core_module (shared) allowmethods_module (shared) version_module (static) authz_host_module (shared) auth_basic_module (shared) unixd_module (static) authz_groupfile_module (shared) auth_digest_module (shared) access_compat_module (shared) […]
How to install the bash shell on FreeBSD
Believe it or not the Bash shell does not come installed on the system. By default FreeBSD uses the sh shell (after the rewrite under the BSD license on 1989 of the original Bourne Shell found on UNIX, which had inherited the ‘sh’ name from the original’s Thomson shell), the C shell or the tcsh […]
How to install software in FreeBSD with pkgng
The pkgng is the package management system in FreeBSD. It is used to install applications, and specific modules, libraries, etc. Nowadays you can select in between more than 25.000 thousand. Yes, twenty five thousand. The syntax to use is very intuitive and simple. As you may be already aware software comes in two forms. Source […]
How to manage site visitors based on IP Geolocation
Whenever someone publishes a website on the internet, most of the times, their intention is that site to be seen around the globe. However, as a site administrator you may want to divert users from one country to visit some specific version of that site, maybe because of the visitor’s language. Other times, less often […]
Donation Time 2020
This 2020 has been a difficult year for everyone. Because of this difficulty and the opportunities I had the chance to take, I’ve been able to contribute back to the open source community, not just with content here in Adminbyaccident.com, advocacy for a few tools such as my favorite OS (FreeBSD) and the usual mouthful […]
How to install the Clamav antivirus on CentOS 8
Clamav is a free antivirus nowadays owned by Cisco and developed under the umbrella of the Talos-Intelligence group. Don’t be fooled by the word free, this is serious business. It supports a wide variety of operating systems from Windows to Linux-based ones as well as FreeBSD. Many companies are using other types of antivirus software […]
How to secure FreeBSD (server minimal edition)
This is a very simple and easy to follow guide on securely administer your FreeBSD server. That said I am not a security expert although I’ve gained some knowledge as time goes by. Not pretending to be the definitive guide this article is an introduction on how to secure FreeBSD in which I will tackle […]
How to mitigate Spectre and Meltdown on an HP Proliant server with Ubuntu
As recently announced in a previous article I wanted to write a couple of guides on how to mitigate Spectre and Meltdown vulnerabilities in GNU/Linux and UNIX environments. It is always a good and I hope a standard practice to have your systems patched and if they aren’t for whatever the reason (that legacy thing […]
How to patch OpenSSH in FreeBSD 12.2
The default version of OpenSSH in FreeBSD 12.2 today, and it’s been this for quite some time, is not the most recent published by the OpenBSD guys, which by the way are the ones developing OpenSSH. Not only is not the latest but it has a few vulnerabilities affecting it, medium risk ones but nevertheless […]