Tech guides, off-road adventures, and everything in between.
Stop guessing who ran that change at 2am. This guide walks through configuring TACACS+ with Cisco ISE on IOS-XE — AAA method lists, command authorization, per-command accounting, and hardening steps with real CLI examples on Catalyst 9300 and ISR 4000.
A step-by-step guide to running your own Bitwarden-compatible password manager with Vaultwarden and Docker Compose — covering TLS setup with Nginx, database backups, Fail2ban protection, and the admin panel.
Most enterprise networks still run dual-stack at best in 2026. This guide covers full IPv6 deployment on Cisco IOS-XE: addressing, OSPFv3, DHCPv6, ACLs, BGP, and the verification commands that actually tell you what’s broken — with real CLI output and production gotchas.
Jimmy’s no-BS guide to the best 1440p graphics cards in 2026 — from the RX 9070 value pick to the RTX 5070’s DLSS 4 edge. Find out which GPU is actually worth your money at QHD.
DMVPN Phase 2 enables direct spoke-to-spoke tunnels on demand, bypassing the hub after the initial NHRP resolution. This complete IOS-XE guide covers mGRE tunnel setup, NHRP configuration, EIGRP next-hop-self pitfalls, IPsec with IKEv2, verification commands, and the most common deployment gotchas.
A practical guide to diagnosing and fixing the most common OSPF adjacency failures on Cisco IOS-XE — MTU mismatches, timer conflicts, authentication errors, duplicate Router IDs, and flapping neighbors — with real show command output and CLI fixes.
Learn exactly how far to air down on sand, rocks, mud, and dirt — plus hands-on reviews of the best portable compressors (ARB Twin, Viair 400P, Smittybilt) and automatic deflator tools to make every trail transition fast and painless.
Cisco’s Embedded Event Manager (EEM) is one of the most underutilized features in IOS-XE. This guide covers six practical EEM applets — from BGP peer monitoring and interface flap detection to nightly config backups and CPU spike capture — with real CLI syntax and Cat9K-specific tips.
Q1 2026 saw 34 DeFi protocols compromised for $169 million. We break down the dominant attack vectors — oracle manipulation, reentrancy, access control failures — the AI-powered exploit tools now threatening smart contracts, and what a proper 2026 security stack looks like for protocol developers, LPs, and researchers.
Most network engineers harden the data plane and forget the control plane — until an SNMP flood drops their OSPF adjacencies. This guide walks through a production-ready CoPP policy for Cisco IOS-XE, with real CLI templates, tuning guidance, and the show commands you need to verify it’s working.
QoS misconfigurations are the number-one cause of jittery voice calls and stuttering video in enterprise networks. This guide walks through a production-ready MQC QoS policy for Cisco IOS and IOS-XE — covering DSCP markings, LLQ, CBWFQ, NBAR2 classification, and the exact show commands you need to verify it’s working.
Stop logging into devices one by one. This hands-on guide covers Netmiko, NAPALM, and Nornir — the Python libraries that let network engineers automate Cisco IOS/IOS-XE tasks, parse show command output, push config changes, and run parallel jobs across hundreds of devices. Real code, real CLI examples, production-ready patterns.
