Advanced SSL/TLS Settings
Setting Up Mutual TLS
Mutual TLS (mTLS) adds an extra layer of security by requiring both server and client to authenticate each other using certificates.
Step 1: Configure Elasticsearch for mTLS
In the elasticsearch.yml file, enable client authentication:
xpack.security.http.ssl.client_authentication: required
xpack.security.http.ssl.certificate_authorities: ["/path/to/elastic-stack-ca.crt"]
Step 2: Configure Clients for mTLS
When making requests, ensure the client uses a certificate signed by the CA:
curl --cert /path/to/client.crt --key /path/to/client.key --cacert /path/to/elastic-stack-ca.crt https://localhost:9200
Tuning SSL/TLS Performance
Step 1: Enable Session Caching
Enable session caching to improve performance for repeated connections:
xpack.security.transport.ssl.session_cache_size: 1000
xpack.security.transport.ssl.session_cache_timeout: 5m
Step 2: Use Strong Cipher Suites
Ensure you use strong and secure cipher suites:
xpack.security.transport.ssl.supported_protocols: [ "TLSv1.2", "TLSv1.3" ]
xpack.security.http.ssl.supported_protocols: [ "TLSv1.2", "TLSv1.3" ]
Securing Elasticsearch with Advanced SSL/TLS Encryption Configuration
Securing Elasticsearch is crucial for protecting your data and ensuring secure communication within your Elasticsearch cluster and between clients. One of the most effective ways to achieve this is by configuring SSL/TLS encryption. This guide provides a detailed, beginner-friendly explanation of advanced SSL/TLS encryption configuration in Elasticsearch, complete with examples and outputs.