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  • The CentOS party is over, isn’t it?

    The CentOS party is over, isn’t it?
  • Donation Time 2020

    Donation Time 2020
  • How to configure TLS 1.2 on UNIX or GNU/Linux

    How to configure TLS 1.2 on UNIX or GNU/Linux
  • How to install the Clamav antivirus on CentOS 8

    How to install the Clamav antivirus on CentOS 8
  • 100 articles mark at Adminbyaccident.com

    100 articles mark at Adminbyaccident.com
  • How to analyze suspicious email

    How to analyze suspicious email

List of Speculative Execution Vulnerabilities

September 1, 2018 By Albert Valbuena

Vulnerability CVE Exploit name Public vulnerability name Firmware changes Spectre 2017-5753 Variant 1 Bounds Check Bypass (BCB) No Spectre 2017-5715 Variant 2 Branch Target Injection (BTI) Yes Meltdown 2017-5754 Variant 3 Rogue Data Cache Load (RDCL) No Spectre-NG 2018-3640 Variant 3a Rogue System Register Read (RSRE) Yes Spectre-NG 2018-3639 Variant 4 Speculative Store Bypass (SSB) […]

How to upgrade FreeBSD from version 11.2 up to 12.0

January 14, 2019 By Albert Valbuena

Although the upgrade process is very well described on the FreeBSD handbook you may be looking for a more detailed hands on how to upgrade FreeBSD from version 11.2 up to 12.0 article. We’re going work here on this process, step by step detailing not only how to upgrade but to do it safely. First […]

Web credentials stealing

April 16, 2020 By Albert Valbuena

The theft of credentials has been occurring since almost the beginning of time. But of course when the web ‘happened’ and specially when e-commerce exploded stealing passwords also went on the rise. Emptying bank accounts, ordering stuff on behalf (and expenses) of others, spying, even impersonation was and is achieved by stealing credentials. Luckily for […]

How to install the FAMP stack

January 8, 2018 By Albert Valbuena

You may have heard of the LAMP stack which stands for Linux, Apache, MySQL and PHP or Perl. This is the same but instead of using the GNU/Linux operating system we’ll use FreeBSD. This is the FAMP stack. There are two ways to install software in FreeBSD, packages and the ports collections. Which in the […]

Abandon Linux. How to install iocage to manage FreeBSD Jails

February 25, 2019 By Albert Valbuena

The iocage program is a python 3 piece created to manage FreeBSD Jails leveraging the underpinning ZFS file system on FreeBSD. As already explained on previous articles the FreeBSD operating system offers an OS-level virtualization system called Jails. And as described on past articles it can benefit administrators and developers alike. This is a simple […]

How to improve Apache HTTP performance on FreeBSD

February 17, 2020 By Albert Valbuena

There are some nice articles on the internet telling you how to improve your Apache HTTP server’s performance. I did my bit on FreeBSD land. While turning on a different MPM than the prefork default one increases Apache HTTP performance by a lot, it is not the only thing one may do. For example if […]

The CentOS party is over, isn’t it?

December 26, 2020 By Albert Valbuena

Disclaimer: What you are about to read may contain inaccuracies. Feel free to discuss them somewhere else. This is also my opinion and as such it may change through time, maybe tomorrow, next month, next year, next decade or never. I do also make very few reviews (if any) of what I write here, so […]

The LAMP stack (Debian 9)

January 11, 2018 By Albert Valbuena

LAMP stack stands for a software stack composed by Linux, Apache, MySQL and PHP (or Perl). It is used for many purposes and its common ground for system administrators. Since there are several of Linux distributions there are some differences in the way the LAMP stack is installed. In this guide we are using the […]

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