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Use Case • Zero Trust Networking

Reach Zero Trust one team at a time.

Enforcing everything at once breaks apps. Greymatter lets security set one safe floor, and teams tighten their own apps when ready.

Real-world problems

Why most Zero Trust rollouts stall.

Nobody has a current list of who calls what. So teams either enforce too early, or they never enforce at all.

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The risk
Today
With Greymatter
No call inventory
Nobody knows which services call each other, or on which port.
Greymatter records the verified callers on a port before it enforces anything.
Big-bang cutover
One switch for the whole company breaks apps that nobody mapped.
Teams lock down on their own schedule. Nothing flips for the whole company at once.
Hand-written allowlists
Teams write allowlists by hand, and the lists go stale.
Admission seals to the callers Greymatter learned.
Teams turn controls off
A team under deadline turns security off to ship.
Teams can tighten their own policy, but never loosen it past the minimum.
Certificates
Teams renew certificates by hand. One missed renewal takes an app down.
Certificates issue and renew on their own. The encryption is FIPS 140-3 validated (CMVP #5191), and post-quantum encryption is on by default.
Audit evidence
Your team gathers evidence by hand before an audit.
Your evidence comes straight from the platform.
One rollout, start to finish

Follow one bank from a shared floor to a sealed namespace.

Dana Ortiz leads platform security at a regional bank. Forty teams share one Kubernetes platform. The card payments team has an audit next quarter. Here is how the steps work.

01Set the floor 02See the calls 03Tighten 04Seal 05Prove it
Without Greymatter: each team picks its own security settings, and some teams pick none.

Dana sets one floor for all teams.

Dana writes one Global Onboarding Policy for the platform. Every namespace with the platform label joins at Strict mesh. Traffic between services is encrypted, and callers must hold a mesh identity. She removes the line that lets teams soften to Observe, so Strict mesh becomes the floor.

One rule covers forty teams. No team can drop below it.
Explore Mesh →
ztfabric68 svc · 9 ns492 healthy48 degraded4 failinglogistics6 services · 1 edge · 0 declared · 2 discovered · 3 platform5 degraded objects48 healthy objects1 securityPODS3 of 7 pods not healthygreymatter.io/managed-by · 5greymatter.io/sidecar-injection-disabled · 1REQUESTSERRORS50.0%jupyterhub6 services · 1 edge · 0 declared · 2 discovered · 3 platform2 failing objects2 degraded objects41 healthy objects3039 securityPODS2 of 6 pods not healthygreymatter.io/managed-by · 4greymatter.io/sidecar-injection-disabled · 1REQUESTSERRORS6200.0%
ztfabric68 svc · 9 ns492 healthy48 degraded4 failinglogistics6 services · 1 edge · 0 declared · 2 discovered · 3 platform5 degraded objects48 healthy objects1 securityPODS3 of 7 pods not healthygreymatter.io/managed-by · 5greymatter.io/sidecar-injection-disabled · 1REQUESTSERRORS50.0%jupyterhub6 services · 1 edge · 0 declared · 2 discovered · 3 platform2 failing objects2 degraded objects41 healthy objects3039 securityPODS2 of 6 pods not healthygreymatter.io/managed-by · 4greymatter.io/sidecar-injection-disabled · 1REQUESTSERRORS6200.0%
Carahsoft Zero Trust Buyer's Guide

Already vetted. Listed in five categories.

Shorten the vendor review and get to approval sooner.

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The impact

What changes when teams can climb on their own.

No new hardware, and no changes to your apps.

01 Data security
Breaches stay where they start.
A sealed namespace admits only the callers it learned, so an attacker in one team's apps cannot reach the next.
Explore Identity →
02 Cost control
No allowlists by hand.
Greymatter learns who calls a port, then seals to that set.
Explore Mesh →
03 Audit readiness
Zero Trust answers, ready.
You see where teams sit on the ladder, namespace by namespace.
Explore Stoplight Measurement →
04 Operations
Lockdowns that do not break apps.
Teams see who a lockdown would refuse before anything is refused. A missed caller gets one grant, so apps keep working for users.
Explore Mesh →
Swipe for all four
Start with one team

Start safe. Tighten when teams are ready.

Try it free on your own systems. Or walk through your setup with our security experts.

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Go deeper

Additional resources

Platform Identity Learn More → Whitepaper Zero Trust Networking Made Enterprise Ready Read the Whitepaper → Blog Greymatter.io and NIST 800-207 Zero Trust Architecture Compliance Read the Blog →
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Straight answers

Zero Trust Networking FAQs

Greymatter moves a namespace up a posture ladder: Observe, Strict mesh, Strict, and then identity enforcement. At each step it records the callers, so you see who would be refused before anything is refused. Teams climb on a schedule they set.

In Greymatter, the platform owner writes one Global Onboarding Policy for the mesh. Its rules claim namespaces and set a minimum posture. Each team can write a Tenant Onboarding Policy for its own namespace to tighten that posture, add grants, and turn on identity enforcement. The cluster refuses a tenant policy that drops below the floor.

Greymatter learns the allowlist from traffic. During the hardening window, it records the verified identities that call a port. When the window closes, admission narrows to exactly that set, plus any grants the team wrote. Nobody writes the allowlist by hand.

See How Identity Works →

Greymatter lists refused callers in the Console with their identity and port. The team adds one grant that names the caller and the port, and the caller gets through. Removing the grant revokes it. A re-learn returns the namespace to Observe and runs the windows again.

No. Greymatter works on top of what you run today. That includes Kubernetes, OpenShift, RKE2, k3s, and k0s, in the cloud, on premises, and on air-gapped networks. Your systems stay in place, with no application rewrite. AI, data, and web rules start in detection mode, so you see what Greymatter would block before you turn blocking on. Your apps keep running the whole time.