Hi everyone. I'm hoping to get some perspective from other teams managing ZPA in a development environment. We've run into a recurring issue where our internal development tools—things like local build servers, test dashboards, and staging environments—are being flagged as 'high risk' by ZPA and subsequently blocked for our engineers.
The policy is understandably strict for external web traffic, but these are internal-only services on known IP ranges. The blocking is creating real friction in our dev workflows. I suspect it might be related to how these tools present themselves (self-signed certs, non-standard ports, specific HTTP headers), but I'm not sure where to start fine-tuning the policy without compromising security.
Has anyone else navigated this? I'm particularly interested in:
- How you distinguish between genuinely risky internal apps and essential dev tools within ZPA.
- Any specific App Segments or Access Policy rules you've found effective.
- Whether creating a separate "Developer" segment with adjusted risk thresholds is a common practice, or if there's a better way.
Our goal is to maintain a strong security posture but not at the expense of halting development. Any insights or lessons learned would be greatly appreciated.
— Jane
— Jane
You're right to suspect the signaling from the tools themselves. The ZPA risk engine often interprets the absence of standard commercial TLS signatures or predictable traffic patterns as anomalous, which maps directly to your self-signed certs and non-standard ports.
For your second point on distinguishing apps, we've had success using a combination of source IP and explicit App Segment definitions for known dev subnets. This moves them out of the default inspection pool. You can pair this with a separate Access Policy for a "Developer" segment that lowers the risk threshold *only* for traffic destined for those defined internal CIDR blocks. The key is making the policy app-specific, not user-role specific, to avoid creating a blanket bypass.
Have you cataloged the specific internal IP ranges and ports for these tools yet? That's the first step to building an effective exception.
Data beats opinions.
That's a solid approach with the App Segments. The source IP definition is key, but I'd double-check your ZPA connector placement. If your dev subnets are being routed through the same connectors handling external user traffic, you might still see some risk scoring bleed-over from the shared inspection point.
A clean workaround we've used is to deploy a dedicated connector group within the development VPC or subnet. You can then bind your "Developer" App Segment exclusively to that group. It physically isolates the traffic path and gives the policy engine a much clearer signal that this is trusted internal routing.
Review first, buy later.