Personal VPN server
Linux
Posted on February 28, 2023
| 3 minutes
| 596 words
| Iulian Costan
I was not a big fan of traditional VPN services (which are highly centralized and slow) until Wireguard has arrived and was merged into Linux Kernel; a VPN for this century, peer to peer with state of the art cryptography.
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Firewall, monitor, ban. Repeat.
Linux
Posted on September 7, 2022
| 4 minutes
| 718 words
| Iulian Costan
Having an internet facing public server requires a bit of monitoring and security to keep bad actors out.
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SSH keys on USB
Linux
Posted on March 15, 2022
| 4 minutes
| 774 words
| Iulian Costan
This is how I keep my SSH key(s) secure and offline, stored on encrypted USB flash-drive.
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From HDD to SSD w/ EFI boot
Linux
Posted on December 21, 2021
| 3 minutes
| 559 words
| Iulian Costan
Oh, Oh! Santa is back in town and I bought myself a small gift to upgrade my Arch Linux garage server from HDD to SSD, here is the step-by-step how to…
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Use Linux kernel module
Kernel
Posted on September 30, 2021
| 3 minutes
| 446 words
| Iulian Costan
In Part 1 I wrote a simple Linux kernel module, called World, in Part 2 I configured that module, now it's time to use that module from within kernel space (another kernel module).
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Config Linux kernel module
Kernel
Posted on August 25, 2020
| 4 minutes
| 806 words
| Iulian Costan
In Part 1 I created a simple World module, now it's time to configure it and there are 3 main ways to do it:
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Write Linux kernel module
Kernel
Posted on March 24, 2020
| 3 minutes
| 543 words
| Iulian Costan
I am thinking to start a Linux Kernel series and write about modules, device drivers, proc and sysfs, unit test with kunit and so on; here is the first one, a simple World module.
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Protect your digital life
Productivity
Posted on March 10, 2020
| 3 minutes
| 533 words
| Iulian Costan
This is how I keep all my data secure, encrypted and in sync between 2 phones (ePhone, my Google-free phone and one iPhone), 2 laptops (Lenovo, my Linux machine and a Macbook) and one desktop (an older iMac).
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Configuration management
Linux
Posted on October 22, 2019
| 2 minutes
| 369 words
| Iulian Costan
Syncing configuration files across multiple machines is one thing but it is more important to track the config changes and figure out what went wrong when the system breaks.
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Package management
Linux
Posted on September 10, 2019
| 4 minutes
| 682 words
| Iulian Costan
I've finally put together a fast, reliable and non-intrusive way to install/query/clean pretty much any software package on the planet in 3 easy steps.
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