mirror of https://github.com/hashicorp/consul
73 lines
4.5 KiB
Markdown
73 lines
4.5 KiB
Markdown
---
|
|
layout: docs
|
|
page_title: Use JWTs to verify requests to API gateways on Kubernetes
|
|
description: Learn how to use JSON web tokens (JWT) to verify requests from external clients to listeners on an API gateway on Kubernetes-orchestrated networks.
|
|
---
|
|
|
|
# Use JWTs to verify requests to API gateways on Kubernetes
|
|
|
|
This topic describes how to use JSON web tokens (JWT) to verify requests to API gateways deployed to Kubernetes-orchestrated containers. If your API gateway is deployed to virtual machines, refer to [Use JWTs to verify requests to API gateways on VMs](/consu/docs/connect/gateways/api-gateway/secure-traffic/verify-jwts-vms).
|
|
|
|
## Overview
|
|
|
|
You can configure API gateways to use JWTs to verify incoming requests so that you can stop unverified traffic at the gateway. You can configure JWT verification at different levels:
|
|
|
|
- Listener defaults: Define basic defaults that apply to all routes attached to a listener.
|
|
- HTTP route-specific settings: You can define JWT authentication settings for specific HTTP routes. Route-specific JWT settings override default listener configurations.
|
|
- Listener overrides: Define override settings that take precedence over default and route-specific configurations. This enables you to set enforceable policies for listeners.
|
|
|
|
|
|
Complete the following steps to use JWTs to verify requests:
|
|
|
|
1. Define a policy that specifies default and override settings for API gateway listeners and attach it to the gateway.
|
|
1. Define an HTTP route auth filter that specifies route-specific JWT verification settings.
|
|
1. Attach the auth filter to the HTTP route values file.
|
|
1. Apply the configurations.
|
|
|
|
|
|
## Requirements
|
|
|
|
- Consul v1.17+
|
|
- Consul on Kubernetes CLI or Helm chart v1.3.0+
|
|
- JWT details, such as claims and provider
|
|
|
|
## Define override and default settings
|
|
|
|
Create a `GatewayPolicy` values file and configure the following fields to define default and override settings for JWT verification. Refer to [`GatewayPolicy` configuration reference](/consul/docs/connect/gateways/api-gateway/configuration/gatewaypolicy) for details.
|
|
|
|
- `kind`: Must be set to `GatewayPolicy`
|
|
- `metadata.name`: Specifies a name for the policy.
|
|
- `spec.targetRef.name`: Specifies the name of the API gateway to attach the policy to.
|
|
- `spec.targetRef.kind`: Specifies the kind of resource to attach to the policy to. Must be set to `Gateway`.
|
|
- `spec.targetRef.group`: Specifies the resource group. Unless you have created a custom group, this should be set to `gateway.networking.kuberenetes.io`.
|
|
- `spec.targetRef.sectionName`: Specifies a part of the gateway that the policy applies to.
|
|
- `spec.targetRef.override.jwt.providers`: Specifies a list of providers and claims used to verify requests to the gateway. The override settings take precedence over the default and route-specific JWT verification settings.
|
|
- `spec.targetRef.default.jwt.providers`: Specifies a list of default providers and claims used to verify requests to the gateway.
|
|
|
|
## Define an HTTP route auth filter
|
|
|
|
Create an `RouteAuthFilter` values file and configure the following fields. Refer to [`RouteAuthFilter` configuration reference](/consul/docs/connect/gateways/api-gateway/configuration/routeauthfilter) for details.
|
|
|
|
- `kind`: Must be set to `HTTRouteAuthFilter`
|
|
- `metadata.name`: Specifies a name for the filter.
|
|
- `metadata.namespace`: Specifies the Consul namespace the filter applies to.
|
|
- `spec.jwt.providers`: Specifies a list of providers and claims used to verify requests to the gateway. The override settings take precedence over the default and route-specific JWT verification settings.
|
|
|
|
## Attach the auth filter to your HTTP routes
|
|
|
|
In the `filters` field of your HTTP route configuration, add the following fields. Refer to the [`extensionRef` configuration reference](/consul/docs/connect/gateways/api-gateway/configuration/routes#rules-filters-extensionref) for details:
|
|
|
|
- `type: extensionRef`: Declare list of extension references.
|
|
- `extensionRef.group`: Specifies the resource group. Unless you have created a custom group, this should be set to `gateway.networking.kuberenetes.io`.
|
|
- `extensionRef.kind`: Specifies the type of extension reference to attach to the route. Must be `RouteAuthFilter`
|
|
- `extensionRef.name`: Specifies the name of the auth filter.
|
|
|
|
## Apply the configurations
|
|
|
|
Run the `kubectl apply` command and specify the values files to apply the configurations. The following example applies the values files stored in the `jwt-routes` directory:
|
|
|
|
```shell-session
|
|
$ kubectl apply -f jwt-routes
|
|
```
|
|
|