Recent posts

Postfix smarthost with authentication

1 minute read

postfix

I used the relay host of my internet provider but this was causing issues since my email was getting mark as SPAM in gmail.
 
It was already on my to-do list to move my outgoing mail to my mail provider also to make it easier to move to another ISP or to implement SPF but was not on the top of my to-do list.
 
My email provider requires authentication, so I needed to reconfigure postfix in my FreeBSD mail jail to use a relay host with authentication.

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Update your CPU microcode on Arch Linux

10 minute read

Meltdown & spectre

With Meldown https://nvd.nist.gov/vuln/detail/CVE-2017-5754, Spectre Variant 1 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5753 and Spectre Variant 2 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5753 out in the wild there is a lot of confusing going about updating microcode.

There is a “Spectre & Meltdown Checker” available at https://github.com/speed47/spectre-meltdown-checker

Usage is very easy just clone the git repository and run the script.

Microcode

Microcode isn’t uploaded to the CPU but loaded during the boot strap of the CPU. Normally the BIOS upload the microcode to the CPU but this can also be done by the by the bootloader, or the operating system kernel.

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model-m tux update…

less than 1 minute read

modelm_tux_only.jpg

I own a Unicomp model-m keyboard. The keyboard has a nice key feel but it has windows super key(s).


I don’t use super key(s), and would prefer to have a keyboard without it. But when it has super keys I’d rather have it without the windows logo on it so it was time to replace them with the tux version

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