ub.com/istio/istio/issues/30295>Issue #30295</a>)</p></li><li><p><strong>Added</strong> support of PeerAuthentication per-port-level configuration on pass through filter chains.
(<a href=https://github.com/istio/istio/issues/27994>Issue #27994</a>)</p></li><li><p><strong>Added</strong> an experimental <a href=/v1.21/docs/reference/config/security/authorization-policy/#AuthorizationPolicy-Action><code>CUSTOM</code> action</a>
in AuthorizationPolicy for integration with external authorization systems like OPA