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In this guide we’ll build a mini ISP-style BGP lab that scales cleanly from a handful of routers to hundreds or thousands — without going insane managing configs by hand. We’ll use: The example here uses 5 core routers and 10 edge routers, but you can turn that into 1000+ edges by changing a single…

Enabling Elasticsearch/Kibana ingestion of Cisco IOS and ASA logs OS: Ubuntu 20.04 + Debian 12Elastic Stack 8.x Firewall open UDP ports 9001-9002, 9200, 5601 2. Install Elastic Stack sudo mkdir -p /usr/share/keyringscurl -fsSL https://artifacts.elastic.co/GPG-KEY-elasticsearch | \sudo gpg –dearmor -o /usr/share/keyrings/elastic-archive-keyring.gpg echo “deb [signed-by=/usr/share/keyrings/elastic-archive-keyring.gpg] \https://artifacts.elastic.co/packages/8.x/apt stable main” | \sudo tee /etc/apt/sources.list.d/elastic-8.x.list sudo apt updatesudo apt install…

1. Overview By default, WSL 2 creates a lightweight VM and places your Linux environment behind a NAT. This allows you to access services via localhost on Windows, but it prevents external devices from reaching your WSL instance directly. To fix this, you must configure WSL to use a bridged network interface. That way, WSL…

Learning to crimp Ethernet cables can seem daunting at first, but it’s actually a straightforward process once you get the hang of it. I started by familiarizing myself with the two common wiring standards: T568A and T568B. While the color of the wires might seem crucial, what’s truly important is the pin each wire is…