# Importing Existing Cluster

**URL:** <https://forums.suse.com/t/importing-existing-cluster/44817>\
**Category:** SUSE Rancher Prime\
**Created:** [December 23, 2024, 3:56pm UTC](https://forums.suse.com/t/importing-existing-cluster/44817 "2024-12-23T15:56:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jdratlif\_iu](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/jdratlif_iu/32/11834_2.png) [@jdratlif\_iu](https://forums.suse.com/u/jdratlif_iu)\
**Post date:** [December 23, 2024, 3:56pm UTC](https://forums.suse.com/t/importing-existing-cluster/44817/1 "2024-12-23T15:56:18Z")

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We want to use rancher to manage several k3s clusters. Are there any firewall rules I need to open to allow traffic between rancher and the existing cluster? I ran the kubectl apply command in the first downstream cluster, and it seemed to work, but I don’t understand how they’re communicating.

Thanks

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<div class="post-metadata">

**Author:** ![meza](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/meza/32/12018_2.png) [@meza](https://forums.suse.com/u/meza)\
**Post date:** [December 23, 2024, 11:03pm UTC](https://forums.suse.com/t/importing-existing-cluster/44817/2 "2024-12-23T23:03:08Z")

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Please check the documentation on what ports need to be open. If your firewall is disabled, then it will just work. [https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/installation-requirements/port-requirements](https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/installation-requirements/port-requirements)