hardware Load-Balancers (LB) ● Application-Tier LB ○ K8s service realized on Application-Tier LBs ● Web-Tier LB to control - ○ Percentage of traffic sent to an AZ, region, etc. ○ L7 routing ○ Hardware closest Web-Tier LB based on DNS lookup Application-Tier Load-Balancer Web-Tier Load-Balancer Application-Tier Load-Balancer Web-Tier Load-Balancer Application-Tier Load-Balancer Web-Tier Load-Balancer apps.cloud.io/v1 kind: AccessPoint metadata: name: my-accesspoint spec: accessPoints: - name: web-tier scopeIDs: - az1 scopeType: AvailabilityZone traffic: gateways: - apiVersion:

com/. Recommendation Within the Webhook.admitPilot() method in istio/pkg/webhooks/validation/server/ server.go, modify the call to Schema.ValidateProto() — and the definition of the method itself — to it exposes. One of which is the “/debug” API hosted on 15014/TCP by default. This service exposes a web interface that is accessible without authentication to anything that is able to access it’s network Pilot. This has a risk of containing certificates, keys, and secrets used by Pilot at runtime. This web interface also allows unauthenticated users to force force all Istio objects to sync their current

Mercari What Is Mercari? ● Service start: July 2013 ● OS: Android, iOS *Can also be accessed by web browsers ● Usage fee: Free *Commission fee for sold items: 10% of the sales price ● Regions/languages "connect-failure”, Connect-failure is retry-safe even for non-idempotent methods as it is triggers when a server is unavailable at the TCP level. Build your Istiod image, push your tag and use it in the IstioOperator even in a same product. Some examples: ○ Latency-sensitive workloads ○ Long-lived batches (ML) ○ Web platforms ● How do you define a common answer to the previous questions? ○ It’s nearly impossible

recommended MaxBytesHandler was used, the request body was not fully consumed, meaning that when a server attempts to read HTTP2 frames from the connection it will instead be reading the body. As such, the FuzzBuildSecurityCaller istio.io/istio/security/pkg/ server/ca https://github.com/istio/istio/blob/6 5478ea81272c0ceaab568974aff7 00aef907312/security/pkg/server/c a/authenticate/fuzz_test.go#L21 The fuzzers typically is Istiod. 2. To receive ADS requests from Envoy and forward these to the specified discovery server which typically is Istiod. Istiod handles certificate signing requests via the IstioCAServiceServer

Request Cert (SDS)) 3. CSR Auth: JWT 4. Cert signed with SPIFFE format Istio-proxy CA server #IstioCon Istio identity – how to get configuration ● Format: "spiffe:///ns/server side mTLS mTLS in Istio - PeerAuthenticati on Using ingress port and ingress host to send request: peer-authentication only defines behavior of server side and auto-mTLS is on by default Access productpage 1) Apply peer-authentication to enable server side mTLS mTLS in Istio - PeerAuthenticati

packet dest ip + port and forward it to POSTROUTING ④ send out to real server Note: Only one connection between user and real server #IstioCon HAPROXY- Transparent Transport ① user send traffic to haproxy connection ④ Loadbalancing: select a endpoint and init a connection to server with original user’s address (IP_TRANSPARENT) ⑤ Server’s response packet is flowing through the same path (TPROXY + Custom Protocol v2 #IstioCon Proxy Protocol client Server Establish TCP connection Proxy Protocol binary header Application data - The client and server side must support proxy protocol simultaneously

Copyright © 2020 Portable Secure Fast Any Language Outside the Web Web Assembly 7 | Copyright © 2020 Extend Envoy Proxy with Web Assembly (Wasm) Polyglot: Envoy Filters are written in C++ and Wasm Copyright © 2020 SECURITY Technology User Experience 11 | Copyright © 2020 11 | Copyright © 2020 Web Assembly lifecycle 12 | Copyright © 2020 Build > meshctl wasm init addheader-filter --language 20 | Copyright © 2020 Build Store Deploy Debug Debug in Production 21 | Copyright © 2020 Web Assembly Envoy Filter: User Experience Simplified tooling to bootstrap Wasm modules in Rust, C++,

Istiod Cluster 2 API server API server Ingress Ingress Service A Service B Service B Mirror Simplified Istio Multicluster Model #IstioCon Istiod Cluster API server Gateway Service

through the Envoy proxies first. • When mTLS is enabled between two services, the client side and server side’s “envoy proxies” verify each other’s identities before sending requests. • If the verification is successful, then the client-side proxy encrypts the traffic, and sends it to the server- side proxy. • The server-side proxy decrypts the traffic and forwards it locally to the actual destination service

Sink： • Source 是资源提供方（server），资源变化了推送给订阅者（Pilot），Istio 1.5 之前这个 角色就是 Galley 或者自定义 MCP Server； • Sink 资源的订阅者（client），在 Istio1.5 之前这个角色就是 Pilot 和 Mixer，都是订阅 Galley 或者自定义 MCP Server 的资源；8/23 MCP mcpserver