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
Arista SD-WAN (formerly VeloCloud) plus the SD-Branch stack: CloudVision, AGNI, 710P switches and Wi-Fi 7 access points.
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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-2026-0322 on PAN-OS: High Privileges Required, Root Delivered
CVE-2026-0322 is an authenticated code injection in the PAN-OS management interface that gives root. It scores 8.6, it is being exploited, and the score undersells why you should patch now.
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PEERSTITCH: What a FortiManager Compromise Leaves Behind After You Patch It
Unit 42 describes a memory-only FortiGate implant, PEERSTITCH, deployed after a FortiManager breach and a CVE-2025-61624 privilege escalation. The patch closes the doors. It does not revoke what was already stolen.
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Arista SD-Branch Part 1: The Product Map for CloudVision, AGNI and the 710P
A map of Arista's campus and branch stack: EOS switches, Wi-Fi 7 access points, CloudVision, CV-CUE and AGNI. What each piece does, where VeloCloud fits, and how this series is sourced.