# Remote cluster 6.8 and 7.12
**URL:** https://discuss.elastic.co/t/remote-cluster-6-8-and-7-12/275954
**Category:** Elasticsearch
**Tags:** elastic-stack-security, ccs-cross-cluster-search
**Created:** [June 15, 2021, 7:28am UTC](https://discuss.elastic.co/t/remote-cluster-6-8-and-7-12/275954 "2021-06-15T07:28:06Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@humartinez](https://discuss.elastic.co/u/humartinez)
#### Post date: [June 15, 2021, 7:28am UTC](https://discuss.elastic.co/t/remote-cluster-6-8-and-7-12/275954/1 "2021-06-15T07:28:06Z")
Im reading the documentation, and as far as I can see I could implement remote clusters to perform a cross cluster search. But theres a catch my cluster 7.x is using TLS and the cluster 6.8 is not using TLS, is it posible to perform the remote cluster config?
Best regards
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [June 15, 2021, 7:37am UTC](https://discuss.elastic.co/t/remote-cluster-6-8-and-7-12/275954/2 "2021-06-15T07:37:22Z")
I believe both clusters must be either secured or unsecured for it to work. I would recommend you secure your 6.8 cluster.
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### Author:  [@humartinez](https://discuss.elastic.co/u/humartinez)
#### Post date: [June 15, 2021, 7:50am UTC](https://discuss.elastic.co/t/remote-cluster-6-8-and-7-12/275954/3 "2021-06-15T07:50:08Z")
Could you please confirm me this? Can I only encript the transport layer (9300)?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 13, 2021, 7:50am UTC](https://discuss.elastic.co/t/remote-cluster-6-8-and-7-12/275954/4 "2021-07-13T07:50:09Z")
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