title: Can I use the Ambassador to authenticate service-to-service communication inside a Kubernetes cluster?
body: <p>I have a Kubernetes cluster with services and I use Ambassador as an API gateway between outside world and my services. </p>
  
  <p>With Ambassador I know that I can use a service, which I have, to check authentication and authorization for incoming requests but does this only apply for requests coming outside the cluster?</p>
  
  <p>I want to intercept service-to-service calls as well. </p>