Tech Blog blog
A personal blog of lab notes on zero trust networking, written while preparing for the Zscaler Digital Transformation Engineer certification. New posts are added as the study plan moves along.
- Lab note 004 · · 2 min read
Identity before connectivity: how ZPA differs from a VPN
A VPN puts the user on the network and then filters. Zscaler Private Access checks who is asking first, and only then joins two outbound connections for one application.
- Lab note 003 · · 2 min read
Five PAC file bugs that fail quietly
A PAC file is a small JavaScript function with no error messages. These five mistakes produce the wrong routing without any warning, and each has a quick check.
- Lab note 002 · · 2 min read
Choosing a ZIA forwarding method: GRE, IPSec, PAC or Client Connector
Four questions that decide how a site or a user should send traffic to Zscaler Internet Access, and the mistakes each method invites.
- Lab note 001 · · 2 min read
A 30-day plan for the ZDTE exam, built from the blueprint
How to split thirty days across the six exam domains so that study time follows the published weights, with a mock exam at the start, the middle and the end.