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docs Connect (Service Segmentation) docs-connect-index Consul Connect provides service-to-service connection authorization and encryption using mutual TLS.

Connect

Consul Connect provides service-to-service connection authorization and encryption using mutual Transport Layer Security (TLS). Applications can use sidecar proxies in a service mesh configuration to automatically establish TLS connections for inbound and outbound connections without being aware of Connect at all. Applications may also natively integrate with Connect for optimal performance and security. Connect can help you secure your services and provide data about service-to-service communications.

Review the video below to learn more about Consul Connect from HashiCorp's co-founder Armon.

Application Security

Connect enables secure deployment best-practices with automatic service-to-service encryption, and identity-based authorization. Connect uses the registered service identity (rather than IP addresses) to enforce access control with intentions. This makes it easier to reason about access control and enables services to be rescheduled by orchestrators including Kubernetes and Nomad. Intention enforcement is network agnostic, so Connect works with physical networks, cloud networks, software-defined networks, cross-cloud, and more.

Observability

One of the key benefits of Consul Connect is the uniform and consistent view it can provide of all the services on your network, irrespective of their different programming languages and frameworks. When you configure Consul Connect to use sidecar proxies, those proxies "see" all service-to-service traffic and can collect data about it. Consul Connect can configure Envoy proxies to collect layer 7 metrics and export them to tools like Prometheus. Correctly instrumented application can also send open tracing data through Envoy.

Getting Started With Connect

There are several ways to try Connect in different environments.

  • The Connect introduction guide is a simple walk through of connecting two services on your local machine using only Consul Connect, and configuring your first intention.

  • The Envoy guide walks through using Envoy as a proxy. It uses Docker to run components locally without installing anything else.

  • The Kubernetes guide walks you through configuring Consul Connect in Kubernetes using the Helm chart, and using intentions. You can run the guide on Minikube or an existing Kubernetes cluster.

  • The observability guide shows how to deploy a basic metrics collection and visualization pipeline on a Minikube or Kubernetes cluster using the official Helm charts for Consul, Prometheus, and Grafana.