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This blog is a personal technical blog about Linux, homelabs, computer security, old hardware, laptops, honeypots, Docker, firewalls, backups and practical sysadmin experiments.

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Comments

Honeypot deployment on Linux - OpenCanary

What’s a honeypot what what its purpose ? It’s basically a computer or Virtual Machine emulating some services (ex: ssh, ftp, telnet, netbios, https, samba server etc) and accepting, logging and sending warnings of all incoming connections. You can use it as intrusion detection or early warning system but it also might go a little further and allow one to get inside the intruders ”head” since you get to log every interaction. How and where should it be placed? Let’s start with “where”. I usually place them in specific areas to get an idea how/or if the network is tested from outside or inside. So I have about three major areas; behind firewalls, in “sensible zones” where only pre-defined machines should have access and in the “public zone” such as administrative/general network. Placing a honeypot behind firewalls/”sensible zones” will ensure that the firewall is doing its and if you get a hit that means you have a missconfigurations or a serious intrusion. Honeypots placed...

Lenovo ThinkPad X250 on Linux: Tweaks, Undervolting, Battery Life and 2026 Update

I wanted a cheap, small, serviceable Linux laptop. Something light enough to carry, easy enough to repair, and inexpensive enough that upgrades would still make sense. The Lenovo ThinkPad X250 was a good candidate because it has a 12.5-inch form factor, a proper ThinkPad keyboard, SSD upgrade options, replaceable parts, Ethernet, docking support and generally good Linux compatibility. I found one on eBay for around 130€ : an Intel Core i5-5300U model with 8GB RAM , a 128GB SSD , two batteries and an HD screen with a small bruise. The plan was simple: clean it, repaste it, upgrade the SSD, install Linux Mint, undervolt it and see how useful it could still be. This post started as my original 2019 notes about tweaking the Lenovo X250 in Linux. I have now updated it with a 2026 perspective, cleaner instructions, better internal links and a more realistic look at whether this old ThinkPad is still worth using. Related posts: Linux Home Server Security Checklist Docker Secu...

Strong, Unique Passwords Without Losing Your Mind

Last updated: May 27, 2026 Password Security in 2026: Password Managers, Passkeys & 2FA for Real People Password Security in 2026: Password Managers, Passkeys & 2FA That Actually Work Most people do not have a weak-password problem. They have a reused-password problem. You can invent the cleverest password in the world, but if you use it on twenty websites and one of them gets breached, you suddenly have twenty compromised accounts. That is how most real-world account takeovers happen in 2026. Not elite hackers brute-forcing your login from a dark room somewhere. Just automated credential stuffing using databases leaked years ago from services you forgot existed. One old forum breach becomes access to your email, cloud storage, streaming services, VPN account, and eventually your homelab dashboard because the same password got reused everywhere. This guide explains how to handle passwords properly today: without paranoia, without enterprise co...

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