4F404 Foundersin404-founders.com·6d ago · 3 min readFortiBleed: 86,000 Firewalls Compromised by Default PasswordsSomeone built a database of working usernames and passwords for 86,000 Fortinet firewalls. Half of the internet-facing FortiGate devices on the planet are in it. The Campaign Security researchers hav00
NSNabeel Shaikhinnabeelshaikh7.hashnode.dev·Jun 9 · 18 min readVirtualized OPNsense, Router-on-a-Stick, and Layer 2 TroubleshootingSection 1 — The Itch For a solid year, I was on a nationwide ISP that handed me a router with exactly two settings accessible: change the LAN IP or disable DHCP. Truly generous of them. It was a locke10
SBSwastisunder Badatyainswasti.hashnode.dev·May 31 · 7 min readUnderstanding Network DevicesEvery time you open YouTube, Instagram, Netflix, or any website… your request travels through many different network devices before reaching server. Most beginners thinks internet is just: Laptop → In00
PHPablo Huertasinpablohuertas.dev·May 14 · 15 min readHardening a Linux VPS: A practical guide beyond the checklistMost guides give you a list of steps to follow. This one tells you why each layer matters, what breaks when you skip it, and how to think like an attacker so you can defend like a professional. Tabl70
KSKaustubh Sharmainkaustubhtech.hashnode.dev·May 13 · 10 min readHow a Single Firewall Quietly Murdered SQL Log ShippingEvery night at 03:00, a 30-minute SQL log-shipping window started taking 90. The DBAs blamed the network. The network team blamed the storage. The Windows admin blamed the NIC. They were all nearly ri00
DNDaniel Nwachukwu Chigoziriminverifieddanny.hashnode.dev·May 6 · 3 min readGot flagged by the German Federal Office for Information Security for two exposed databases on my VPS. Here's what was wrong and how I locked it down in 20 minutes.I had this project I deployed a few days back: conduit, A webhook relay that makes sure webhook events coming from external sources get to your application server. Everything was going fine until I go00
NDnickson diazinnickson-infraestructure.hashnode.dev·May 5 · 3 min readEnterprise simulation NFGW GUI Foundation LabToplogy Overview Initial configuration In this I'm setting the value for communication between PC-ADMIN and Fortigate. Fortigate Commands FortiGate-VM64-KVM # config system interface FortiGate-VM600
ACAdarsh Choubeyinnetworking--basics.hashnode.dev·Apr 25 · 2 min read🌐 Networking Basics Explained: Router, Modem, Firewall, Load Balancer, Switch & Hub🔌 1. Router A router connects different networks together. 👉 It connects your home network to the internet 👉 It decides where data should go Example: When you open a website, the router sends your 00
MAMuhammad Alfian Tirta Kusumainblog-alfian.hashnode.dev·Apr 18 · 3 min readControlling Port Access with UFWUFW (Uncomplicated Firewall) is a user-friendly front end for iptables designed to make managing a host-based firewall simpler. It’s available on Debian/Ubuntu and many other Linux distributions and p00
HHugoinhugovalters.hashnode.dev·Apr 8 · 3 min read"admin/admin": How Your $10,000 Firewall is Compromised by a $1 MistakeI love auditing infrastructure where a company has spent $15,000 on a high-end FortiGate or Palo Alto appliance, paid another $5,000 for the advanced threat protection licensing, and then left the web management interface exposed to the entire intern...00