My name is Albert Valbuena. I am a retired ski instructor and after a period of five years in the international department of a logistics company I recently moved in to the IT industry. It hasn’t been overnight and it is still work in progress. A few years ago I started a website called www.skireviewer.com. […]
Who am I?
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 […]
How to mitigate/solve the MDS vulnerabilities of Intel processors in FreeBSD
It had to happen again. Anyone betting on new hardware vulnerabilities on Intel processors would have won. This time these are called the MDS vulnerabilities, which stands for Microarchitectural Data Sampling. The trouble is the ones who would have really made big money would have been those stating the new CPUs were on the same […]
WordPress administration over SSL
If you are a WordPress user or prettend to become one and you have some IT administration knowledge this guide is of your interest. Many hostings already provide easy point and click solutions to administer WordPress over SSL. However you may be self hosting WordPress or you’re just a curious person. What is TLS? TLS […]
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 install OSSEC server on Ubuntu
OSSEC is a host-based intrusion detection system (HIDS). It is specially well known for monitoring files that shouldn’t change on a system (such as critical system files, or binaries, etc) and warning administrators (or anyone you’d like) about those issues. But it does more such as rootkit detection and log analysis with a dedicated engine. […]
How to configure FreeBSD to use a webcam (version 12 and 13)
Introduction. Unlike many Linux distributions the FreeBSD operating system comes quite crude out of the box. What others will interpret as a disadvantage, with some knowledge on the system, others see the power to serve. Anyone willing to have a nice FreeBSD desktop experience with little effort, there are a couple of BSD-based distributions, like […]
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 configure the IPFW firewall on FreeBSD
Among the three possible firewalls on FreeBSD (choice is always nice) IPFW is the in-house built one. There is a default, easy way, configuration path but if one needs to build a box to act as a dedicated network appliance with packet filtering capacity fine tunning the IPFW firewall configuration is more than desirable. Before […]
How to format an USB drive on FreeBSD
File system support on FreeBSD falls onto UFS (UNIX File System) or originally named the FFS (Fast File System and on ZFS (Zetabyte File System). If you are using your box as a desktop-workstation you will use USB drives to share files with other systems, to carry things on your pocket or safe the day […]