Tag Archives: security

Free Network Security Training from Fortinet: NSE 1, 2, and 3

Posted on September 1, 2026 by ronaldpringadi

Good introductory material on network security is easy to find, but most of it is either shallow blog posts or paid courses. One option that sits in between is often overlooked: Fortinet, the network security vendor, runs a public training … Continue reading →

Posted in Security | Tagged , | Leave a comment

Block Countries by IP on Debian Trixie with nftables and xtables-addons

Posted on May 11, 2026 by ronaldpringadi

Debian Trixie uses nftables as its default firewall. If you’re used to iptables, the commands still work — but they go through an iptables-nft compatibility shim that translates them to nftables rules under the hood. For country-based IP blocking, the … Continue reading →

Posted in Linux | Tagged , , , | Comments Off on Block Countries by IP on Debian Trixie with nftables and xtables-addons

BOLA in a Laravel Livewire app: when client-side state is the only thing standing between users and admin actions

Posted on November 26, 2025 by ronaldpringadi

A penetration test landed an interesting finding on a Livewire-powered admin panel I work on. The summary on the report read: Broken Object-Level Authorization (BOLA). A standard user can change a tenant-wide “who can access these assets” setting by replaying … Continue reading →

Posted in Laravel, PHP | Tagged , , , , , , | Comments Off on BOLA in a Laravel Livewire app: when client-side state is the only thing standing between users and admin actions