Delphi Simplifies Kubernetes Security with Aspen Mesh

How Delphi Simplifies Kubernetes Security with Aspen Mesh

Delphi's Mission

Delphi delivers software solutions that help professional liability insurers streamline their operations and optimize their business processes. Leveraging a highly flexible technology platform, Delphi enables companies to reduce costs, increase operational efficiency, and improve business intelligence. The Delphi Digital Platform is a cloud-based software solution that connects customers, agents, employees, and third parties to Delphi’s core transactional systems and other solutions in the digital ecosystem. This provides professional liability insurance carriers with modern microservice-based software solutions, giving them: 

  • The ability to link their business directly to their customers’ needs 
  • The flexibility to quickly respond to changing market conditions 
  • A cloud platform providing an environment for acquisition integration 

Delphi's Technology Stack

The infrastructure team at Delphi has fully embraced a cloud-native stack to deliver the Delphi Digital Platform to its customers. The team leverages Kubernetes to effectively manage builds and deploys. Delphi planned to use Kubernetes from the start, but was looking for a simpler security solution for their infrastructure that could be managed without implementations in each service. 

The Challenge

Operating in the highly regulated healthcare industry, privacy and compliance concerns such as HIPAA and APRA mandate a highly secure environment. A zero trust environment is of utmost importance for Delphi and their customers. Delphi, was getting tremendous value from Kubernetes but needed to find an easier way to bake security into the infrastructure. Taking advantage of a service mesh was the obvious solution to address this challenge, as it provides cluster-wide mTLS encryption. The team chose Istio to solve this problem. The initial solution included setting up a certificate at the load balancer, but this had open http between the load balancer and service. Unfortunately, this was not acceptable in a highly regulated healthcare industry with strict requirements to keep personal data secure.


“At this point, I look at Aspen Mesh as an extension of my team”
- Bill Reeder, Delphi Technology Lead Architect 

The Solution

With the final solution in sight, Delphi engaged with Aspen Mesh to implement an end-to-end encrypted solution, from Client to back end SaaS applications. This was achieved by enabling mTLS mesh-wide from service to service and creating custom Istio policy manifests to integrate cert-manager and Letsencrypt for client-side encryption. As a result, Delphi is able to provide secure ingress integration for a multitenant B2C environment.This approach forwards encrypted AWS Elastic Load Balancer traffic to the Istio Ingress Gateway for TLS connection termination. The solution utilizes DNS resolution via Route53 to allow LetsEncrypt to validate the Certificate Signing Request and issue a certificate to cert-manager.The traffic then traverses one gateway resource per tenant (isolated client hosts) where each gateway contains its own certificate. This solution allows Delphi to deploy its own private key and certificate whenever a new tenant is created in the mesh, generating a fully scalable solution where cert-manager/Letsencrypt provides the certs or keys as desired. 

The Impact

The Aspen Mesh solution lets Delphi use Let’s Encrypt seamlessly with Istio. This has removed the need to consider building security into application development and placed it into an infrastructure solution that is highly scalable. Leveraging the power of Kubernetes, Istio and Aspen Mesh, the Delphi team is delivering a highly secure platform to their customers without the need to implement encryption in each service.