dynamicActiveSecrets[0].secret.tlsCertificate.certificateChain.i nlineBytes' -r | base64 -d | openssl x509 -noout -text -in - ● Part of cluster config in envoy config-dump ○ kubectl exec -c istio-proxy curl lo it ○ If server has a sidecar and allows mTLS, send mTLS – reviews-v1 & v3 ○ Otherwise, send plain text – reviews-v2 ● Server side will be in PERMISSIVE mode by default #IstioCon mTLS in Istio - PeerAuthentication server sidecar will accept ● PERMISSIVE: accepts for both plain text and mTLS ● STRICT: accepts only mTLS ● DISABLE: accept only plain text ● UNSET: inherit from parent, default to PERMISSIVE if no set

by pilot-a gent to generate the initial Envoy proxy configuration uses the Golang text/template package to render a text template into a JSON file. This implementation does not perform output encoding specific local out = assert(fd:read('*a')) request_handle:respond({ [":status"] = "200", [":content-type"] = "text/plain", }, out) return end request_handle:respond({ [":status"] = "200", }, "TEST\n") end -

tlsCertificate.certificateChain.inlineBytes' | \ sed 's/"//g' | base64 --decode | openssl x509 -noout -text Certificate: Data: Version: 3 (0x2) Serial Number: … Signature

every connection with a header reporting the client IP address and port. A PROXY Protocol plain-text header has the format: PROXY TCP4 192.0.2.0 192.0.2.255 42300 443\r\n  Proxy Protocol v2 #IstioCon

Http3 Full Stack Fest, Daniel Stenberg HTTP/2 HTTP/3 Transport TCP QUIC Streams HTTP/2 QUIC Clear text version Yes No Independent streams No Yes Header compression HPACK QPACK Server push Yes Yes Early