# What version of TLS used by Logstash output

**URL:** <https://discuss.elastic.co/t/what-version-of-tls-used-by-logstash-output/272086>\
**Category:** Logstash\
**Tags:** elastic-stack-security\
**Created:** [May 4, 2021, 3:33pm UTC](https://discuss.elastic.co/t/what-version-of-tls-used-by-logstash-output/272086 "2021-05-04T15:33:31Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [May 4, 2021, 4:05pm UTC](https://discuss.elastic.co/t/what-version-of-tls-used-by-logstash-output/272086/2 "2021-05-04T16:05:05Z")

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Answered [here](https://discuss.elastic.co/t/does-logstash-use-openssl/269827/3). You need to follow the chain of dependencies for each library used, that can be [scary](https://xkcd.com/2347/), but the best way to do it is to build the product from source.

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_[View the full topic](https://discuss.elastic.co/t/what-version-of-tls-used-by-logstash-output/272086)._