# Unable to establish connection

**URL:** <https://discuss.elastic.co/t/unable-to-establish-connection/266808>\
**Category:** Elasticsearch\
**Created:** [March 10, 2021, 12:55pm UTC](https://discuss.elastic.co/t/unable-to-establish-connection/266808 "2021-03-10T12:55:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![RomanK](https://avatars.discourse-cdn.com/v4/letter/r/ed8c4c/32.png) [@RomanK](https://discuss.elastic.co/u/RomanK)\
**Post date:** [March 10, 2021, 12:55pm UTC](https://discuss.elastic.co/t/unable-to-establish-connection/266808/1 "2021-03-10T12:55:39Z")

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Our architecture has microservices that cannot connect to the internal network by themselves (for security reasons). Is it possible to establish a TCP connection from the Elasticsearch side?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 7, 2021, 12:56pm UTC](https://discuss.elastic.co/t/unable-to-establish-connection/266808/2 "2021-04-07T12:56:33Z")

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