Guide Series
Linux & Scripting
Linux fundamentals, server administration, Bash scripting, and automation for network engineers.
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Python for Networks
Python programming from the ground up, focused on network automation, APIs, and tooling.
Start Learning →AI & Automation
Practical AI guides for technical professionals — LLMs, APIs, self-hosting, and building AI-powered tools.
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Fortinet SDWAN
Comprehensive guides from NSE4 through NSE7. Configuration, design, and real-world SDWAN deployment with FortiGate.
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Cisco SDWAN
Cisco Catalyst SDWAN (Viptela) architecture, the ENSDWI/SDWSCS exam-blueprint study series, and enterprise routing and switching.
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Arista / VeloCloud SDWAN
Arista (formerly VMware) VeloCloud — orchestrator, edges, gateways, business policy, and real deployment experience.
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Palo Alto Prisma SDWAN
CloudGenix lineage, ION and Strata Cloud Manager, app-defined path selection, and Prisma Access/CloudBlades security.
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Juniper SDWAN
Mist cloud management and Session Smart Routing (SSR, ex-128 Technology) — Juniper's SDWAN platform and field notes.
Start Learning →Lab Environments
The lab environment landscape — hypervisors, network emulation platforms, vendor-official tools, container-native labs, and cloud-hosted options, with deep dives to follow.
Start Learning →Personal & Off-Topic
Beyond networking — study guides for non-technical certifications like the RYA Marine Radio (SRC), and hobby deep dives.
Start Learning →Latest from the Blog
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CVE-2026-76504 and Cisco's October 2026 Fixes: SD-WAN Manager, NX-OS, APIC and License On-Prem
One exploited Catalyst SD-WAN Manager authentication bypass (CVE-2026-76504, CVSS 9.8, on CISA KEV) and a seven-day-later batch of 14 advisories covering NX-OS, APIC and License On-Prem, including a CVSS 10.0 that is not the one being exploited.
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FortiBleed Update: the FBI and Secret Service Advisory, and the FortiMail Zero-Day CVE-2026-104286
The FBI and Secret Service now put FortiBleed at 86,644 compromised FortiGates and say attackers are locking admins out. Separately, FortiMail CVE-2026-104286 (CVSS 9.8) was exploited before a patch existed. What changed, what is unrelated, and what to check.
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FortiGate BGP Cookbook Part 1: Dual-ISP Edge Recipes
Six FortiGate BGP recipes for a dual-homed internet edge: stop being a transit AS, accept only a default route, steer traffic in both directions, advertise a prefix with no connected route, originate a default, and authenticate the session with TCP-AO.