Enable Node-to-Node Encryption for Elasticsearch Domains
Ensures intra-cluster communications among Elasticsearch nodes are encrypted, protecting data in transit from interception.
| Rule | Elasticsearch domains should encrypt data sent between nodes |
| Framework | AWS Foundational Security Best Practices |
| Severity | ✔ Medium |
Rule Description:
To adhere to AWS Foundational Security Best Practices, it is essential to ensure that data sent between nodes in Elasticsearch domains is encrypted. Encrypting the data helps in protecting sensitive information and ensuring data security within the Elasticsearch domain.
Troubleshooting Steps:
If data between nodes in the Elasticsearch domains is not encrypted, follow the below steps for troubleshooting:
- 1.Check the cluster settings to verify if encryption is enabled for data in transit.
- 2.Review the Elasticsearch configuration files to ensure that the necessary encryption settings are configured.
- 3.Verify that the SSL/TLS certificates are correctly set up to enable encryption for data transfer.
- 4.Check the network connections and configurations to ensure that encrypted communication is established between the nodes.
Remediation Steps:
To encrypt data sent between nodes in Elasticsearch domains for AWS Foundational Security Best Practices, follow the steps below:
Step 1: Configure Encryption Settings
Edit the Elasticsearch configuration file to enable encryption for data in transit. Add or update the following settings:
xpack.security.transport.ssl.enabled: true xpack.security.http.ssl.enabled: true
Step 2: Configure SSL/TLS Certificates
Generate SSL/TLS certificates for encrypting the communication between nodes. Ensure that the certificates are properly installed and configured in Elasticsearch.
Step 3: Restart Elasticsearch Service
After making the necessary configuration changes, restart the Elasticsearch service to apply the new settings and enable encryption for data transfer.
sudo service elasticsearch restart
Step 4: Verify Encryption
Check the Elasticsearch cluster to verify that data between nodes is now encrypted. Monitor the cluster to ensure that all communications are encrypted using SSL/TLS.
By following these remediation steps, data sent between nodes in Elasticsearch domains will be encrypted, enhancing data security and compliance with AWS Foundational Security Best Practices.