# Client Certificate Authentication It is possible to enable Client Certificate Authentication using additional annotations in the Ingress. ## Setup instructions 1. Create a file named `ca.crt` containing the trusted certificate authority chain (all ca certificates in PEM format) to verify client certificates. 2. Create a secret from this file: `kubectl create secret generic auth-tls-chain --from-file=ca.crt --namespace=default` 3. Add the annotations as provided in the [ingress.yaml](ingress.yaml) example to your ingress object.