# Support for device environment variables

**URL:** <https://forums.balena.io/t/support-for-device-environment-variables/4357>\
**Category:** openBalena\
**Created:** [November 7, 2018, 5:50pm UTC](https://forums.balena.io/t/support-for-device-environment-variables/4357 "2018-11-07T17:50:26Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![dfunckt](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/dfunckt/32/56_2.png) [@dfunckt](https://forums.balena.io/u/dfunckt)\
**Post date:** [November 8, 2018, 4:18pm UTC](https://forums.balena.io/t/support-for-device-environment-variables/4357/9 "2018-11-08T16:18:23Z")

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@WillFG you should be good only exposing 443 for now. Note that we’ll soon require 3128 as well for device SSH.

The Python SDK currently cannot target an open-balena instance – it still assumes the full balenaCloud API.

Regarding the env vars issue you’re seeing, can you please make sure you completely remove previous CLI versions before updating – NPM might not pick up new versions of dependencies.

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_[View the full topic](https://forums.balena.io/t/support-for-device-environment-variables/4357)._