 configuration flags and environment variables for the proxy. These now read directly from the mesh configuration.</li><li><em><strong>Changed</strong></em> the proxy readiness probe to port 15021.</li><li><em><strong>Fixed</strong></em> a <a href=https://github.com/istio/istio/issues/16458>bug</a>, which blocked external HTTPS/TCP traffic in some cases.</li></ul><h2 id=security>Security</h2><ul><li><em><strong>Added</strong></em> <a href=https://github.com/istio/istio/pull/22789>JSON Web Token (JWT) cachin