# Does logstash use openssl?

**URL:** <https://discuss.elastic.co/t/does-logstash-use-openssl/269827>\
**Category:** Logstash\
**Created:** [April 12, 2021, 2:23am UTC](https://discuss.elastic.co/t/does-logstash-use-openssl/269827 "2021-04-12T02:23:44Z")\
**Posts on this page:** 1\
**Showing post:** 3

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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:** [April 12, 2021, 4:22pm UTC](https://discuss.elastic.co/t/does-logstash-use-openssl/269827/3 "2021-04-12T16:22:01Z")

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> [@TakaSeki](#):
>
> Does logstash use openssl when using the SSL / TLS protocol?

That depends on which filter you are using. A tcp input uses netty, and netty uses OpenSSL. The elasticsearch filters use cheald's manticore, which is built upon the Apache http client, which uses JSSE.

JRuby-OpenSSL uses Bouncy Castle to emulate OpenSSL. It does not use OpenSSL.

If you want to know versions I would suggest building logstash from source and seeing what dependencies get pulled.

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