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DiscrimiNAT Firewall

Replace cloud NAT gateway with a drop-in alternative that adds egress security – without breaking existing applications.

Zero-downtime migration from cloud NAT

No per-GB data charges (save on egress costs)

No CA certs or proxy config needed

TLS SNI spoofing detection

Rollback to cloud NAT in under 1 minute

Monitor mode to discover FQDNs first

Per-app dry-run mode before enforcement

PCI DSS, SOC 2, NIST 800-53 ready

Built in Rust

Memory Safety

Thread Safety

High Performance


Trusted by Security and Platform teams across fintech, healthcare, retail, and technology sectors.


The domain based rules in AWS firewall are pretty much a joke as it is based only on tls.sni that you can easily spoof, that doesn't really meet our standards.

EX-UNIT 8200 CEO | CYBERSECURITY STARTUP
on AWS

The rollback capability gave us confidence to deploy in Production. We could always fall back to the Managed NAT gateway if needed.

PLATFORM ENGINEER | FINTECH
on AWS

It's really fast and performant. We deploy it with the Terraform module and it's maintenance-free for us. Price is also good.

PLATFORM ENGINEER | MANUFACTURING
on GCP

No TLS decryption means no privacy concerns, no certificate management, and no performance overhead. Perfect for compliance.

SECURITY ARCHITECT | HEALTHCARE
on AWS

The zero false positives claim from Wormhole DNS verification turned out to be accurate. Our SOC stopped chasing phantom alerts.

SOC MANAGER | INSURANCE
on GCP

We really like the speed and simplicity of deployment using Terraform with the vendor-supplied modules, no need for console access.

CLOUD SECURITY ENGINEER | ENTERPRISE
on AWS and GCP
Drop-in NAT
gateway replacement
Out-of-band DNS
spoofing detection
Rollback to Cloud NAT
in under 1 minute
Zero false positives
with Wormhole DNS
No per-GB data
processing charges
two½ minute demo

where we are

3 Laundress Ln
Cambridge CB2 1SD
United Kingdom