Introduction
In this article, we will discuss how to integrate Keycloak SAML/LDAP users with AWS Client VPN. Keycloak is an open-source Identity and Access Management (IAM) solution, while AWS Client VPN is a secure, scalable, and fully managed VPN service provided by Amazon Web Services (AWS). By integrating Keycloak with AWS Client VPN, you can provide secure access to your AWS resources using SAML/LDAP authentication.
Prerequisites
- A Keycloak realm configured with SAML and LDAP.
- An AWS account with IAM user permissions to create and manage VPN gateways, certificates, and VPN clients.
- A VPN client installed on your local machine or the machine you want to connect to the VPN.
Steps to Integrate Keycloak SAML/LDAP Users with AWS Client VPN
Step 1: Create an IAM Role for Keycloak
Before configuring Keycloak as an identity provider for AWS Client VPN, you need to create an IAM role for Keycloak. This role will allow Keycloak to assume a role and access the necessary AWS resources.
AWS CLI command:
aws iam create-role --role-name KeycloakRole --assume-role-policy-document file://KeycloakTrustPolicy.json
Step 2: Configure Keycloak as an Identity Provider in AWS
Next, you need to configure Keycloak as an identity provider in AWS. This involves creating a trust relationship between Keycloak and AWS, and creating a metadata file that contains the necessary SAML metadata for AWS to trust Keycloak.
Keycloak Console:
- Go to the Keycloak Admin Console.
- Select your realm.
- Go to the "Identity Providers" tab.
- Add a new SAML Identity Provider.
- Configure the settings as follows:
- Entity ID: The entity ID for your AWS identity provider.
- Single Sign-On URL: The URL for the AWS sign-on page.
- Logout URL: The URL for the AWS logout page.
- Certificates: Upload the certificate for your AWS identity provider.
Step 3: Create an AWS Client VPN Gateway
Create an AWS Client VPN gateway using the IAM role created in step 1.
AWS CLI command:
aws vpn create-vpn-gateway --vpn-gateway-name MyVPNGateway --region us-west-2 --protocols udp --client-cidr-ranges 0.0.0.0/0 --vpc-id vpc-1234567890abcdef0 --server-certificate-arn arn:aws:acm:us-west-2:123456789012:certificate/MyCertificate/12345678-1234-1234-1234-123456789012 --role-arn arn:aws:iam::123456789012:role/KeycloakRole
Step 4: Create an AWS Client VPN User Pool
Create a user pool in AWS that maps to your Keycloak users.
AWS CLI command:
aws vpn create-client-pool --client-pool-name MyClientPool --vpn-gateway-arn arn:aws:vpn:us-west-2:123456789012:vpn-gateway/MyVPNGateway/12345678-1234-1234-1234-123456789012 --authentication-options SAML --saml-configuration file://SAMLConfiguration.json
Step 5: Configure Keycloak to Trust AWS
Configure Keycloak to trust AWS as an identity provider.
Keycloak Console:
- Go to the Keycloak Admin Console.
- Select your realm.
- Go to the "Identity Providers" tab.
- Add a new SAML Identity Provider.
- Configure the settings as follows:
- Entity ID: The entity ID for your AWS identity provider.
- Single Sign-On URL: The URL for the AWS sign-on page.
- Logout URL: The URL for the AWS logout page.
- Certificates: Download the certificate for your AWS identity provider.
Step 6: Configure Keycloak to Map AWS Users to Keycloak Users
Configure Keycloak to map AWS users to Keycloak users based on their email addresses.
Keycloak Console:
- Go to the Keycloak Admin Console.
- Select your realm.
- Go to the "Users" tab.
- Select the user that will be used to authenticate with AWS.
- Go to the "Credentials" tab.
- Add a new "SAML" credential.
- Configure the settings as follows:
- Entity ID: The entity ID for your AWS identity provider.
- Name ID Format: EmailAddress
Step 7: Test the Configuration
Test the configuration by connecting to the AWS Client VPN using your Keycloak user credentials.
Summary
In this article, we discussed how to integrate Keycloak SAML/LDAP users with AWS Client VPN. We covered the prerequisites, steps to configure Keycloak as an identity provider in AWS, and how to test the configuration.