Unlocking mTLS Support in Logstash Elasticsearch Input Plugin: What You Need to Know скачать в хорошем качестве

Unlocking mTLS Support in Logstash Elasticsearch Input Plugin: What You Need to Know

Discover the challenges and limitations of configuring mutual TLS authentication with the Logstash Elasticsearch input plugin, and learn more about the SSL options available. --- This video is based on the question https://stackoverflow.com/q/67762274/ asked by the user 'liotur' ( https://stackoverflow.com/u/7313637/ ) and on the answer https://stackoverflow.com/a/67762848/ provided by the user 'Badger' ( https://stackoverflow.com/u/11792977/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Logstash Elasticsearch input plugin mTLS support Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Unlocking mTLS Support in Logstash Elasticsearch Input Plugin: What You Need to Know As companies increasingly prioritize security in their data operations, implementing mutual TLS (mTLS) authentication has become crucial, especially when working with sensitive datasets in an Elasticsearch cluster. In this post, we will explore a common question regarding the setup of mutual TLS authentication using the Logstash Elasticsearch input plugin, highlighting the limitations and what options you truly have. The Problem: mTLS Configuration with Logstash A user reached out with specific needs regarding their Elasticsearch cluster, which is configured to work securely over TLS with mutual authentication. Their task is to read data from the cluster and forward it to the output, but they face questions about their Logstash configuration: One-way TLS: Can they configure Logstash to not verify the hostname during the TLS handshake? Mutual TLS: How can they provide a client certificate or a keystore to Logstash, so that it can be authenticated by the Elasticsearch cluster? These questions are important for ensuring secure data transfer while maintaining flexibility in the configuration. The Solution: Unpacking the Limitations Let's break down the answers to these questions. 1. One-way TLS Configuration In a typical one-way TLS setup, the ssl flag is enabled, and the ca_file is provided to validate the server's certificate. However, when it comes to bypassing hostname verification, the answer is no. Important Note: The Logstash Elasticsearch input plugin does not currently support any configuration to state that hostname verification is not needed. Thus, the hostname must always match the certificate’s Common Name (CN) or Subject Alternative Name (SAN). 2. Mutual TLS Capabilities When it comes to mutual TLS, the situation is similar. The user expressed a need for Logstash to present a client certificate, yet the capability to do so via the Elasticsearch input plugin is not available: The Elasticsearch Output plugin does provide support for client certificates through a keystore option, but this feature is not extended to the Elasticsearch input plugin. Furthermore, Logstash does not support configurations that allow for the use of non-name-matched certificates during this handshake process. Conclusion: Navigating Logstash's SSL Limitations While Logstash offers robust features for data ingestion and output, there are significant limitations regarding the mTLS capabilities in the Elasticsearch input plugin. Specifically: You cannot disable hostname verification. You cannot provide a client certificate or keystore for mutual TLS configuration. Given these constraints, it may be necessary to explore alternative configurations or even different tools, depending on your security requirements. By maintaining awareness of these limitations, you can plan your Logstash setup accordingly, ensuring your data remains secure throughout its lifecycle in the Elasticsearch cluster. If you have further questions or need assistance setting up your Logstash configuration, don’t hesitate to reach out to the community or consult the official documentation for more insights!