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В этой статье будет разбираться построение многосегментного Linux-маршрутизатора на базе Ubuntu 24.04, Netplan и nftables на основе моего лабораторн…
Cisco FMC CVE-2026-20079: a CVSS 10.0 management-plane bypass and the clusters behind it Opening A patch that shipped in March became an incident in…
If you use WSL2 (Windows Subsystem for Linux) for web development, you've likely hit this wall: you start a development server (Vite, Next.js, Node,…
Why firewall migrations frighten the people who have done one Companies replace firewalls for ordinary reasons: the hardware reaches end of support,…
Хочу поделиться разбором инцидента, который заставил меня вместо привычного GUI окунуться в файловую систему OPNsense. Я расскажу, как с&n…
Одна команда с policy drop может оставить администратора без доступа к серверу — особенно когда исправлять ошибку уже некому. Разберё…
Within minutes of going online, every public server starts receiving automated attacks: password guesses, port scans, and exploit attempts against w…
A few months ago I pulled an old i7-7700 box out of a closet, threw 15GB of RAM at it, and turned it into my home lab. No GPU, nothing fancy. I run…
Introduction: In a secure cloud environment, controlling how traffic flows between resources is just as important as protecting the resources themse…
Originally published at fatihsennik.com You were running your own servers. You thought you understood firewalls such as UFW rules, iptables, Cloudfl…