Securing Kubernetes Ingress#

The ingress controller is the front door to your cluster. Every request from the internet passes through it, making it both the most exposed component and the best place to enforce security controls. Most teams deploy an ingress controller and stop at basic routing. That leaves the door wide open.

TLS Termination and HTTPS Enforcement#

Every ingress should terminate TLS. Never serve production traffic over plain HTTP. With nginx-ingress, force HTTPS redirects and add HSTS headers:

OAuth2 vs OIDC: What Actually Matters#

OAuth2 is an authorization framework. It answers the question “what is this client allowed to do?” by issuing access tokens. It does not tell you who the user is. OIDC (OpenID Connect) is a layer on top of OAuth2 that adds authentication. It answers “who is this user?” by adding an ID token – a signed JWT containing user identity claims like email, name, and group memberships.