# Elastic agent input gives bad\_certificate in Logstash

**URL:** <https://discuss.elastic.co/t/elastic-agent-input-gives-bad-certificate-in-logstash/365748>\
**Category:** Logstash\
**Created:** [August 29, 2024, 9:13am UTC](https://discuss.elastic.co/t/elastic-agent-input-gives-bad-certificate-in-logstash/365748 "2024-08-29T09:13:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Alessio\_Creo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alessio_creo/32/43381_2.png) [@Alessio\_Creo](https://discuss.elastic.co/u/Alessio_Creo)\
**Post date:** [August 29, 2024, 9:13am UTC](https://discuss.elastic.co/t/elastic-agent-input-gives-bad-certificate-in-logstash/365748/1 "2024-08-29T09:13:47Z")

</div>

Hi,

following step-by-step the following guide

> **[Configure SSL/TLS for the Logstash output | Fleet and Elastic Agent Guide...](https://www.elastic.co/guide/en/fleet/8.15/secure-logstash-connections.html)**

We can't connect the elastic agent to Logstash because of a `bad_certificate` error.

We have basic License but we set the Logstash output as default.

Please let me know what additional information do you need.

Thanks!