# Cross cluster replication connection issue
**URL:** https://discuss.elastic.co/t/cross-cluster-replication-connection-issue/286150
**Category:** Elasticsearch
**Tags:** ccr-cross-cluster-replication
**Created:** [October 7, 2021, 3:03pm UTC](https://discuss.elastic.co/t/cross-cluster-replication-connection-issue/286150 "2021-10-07T15:03:24Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@cctk](https://discuss.elastic.co/u/cctk)
#### Post date: [October 7, 2021, 3:03pm UTC](https://discuss.elastic.co/t/cross-cluster-replication-connection-issue/286150/1 "2021-10-07T15:03:25Z")
HI ,
Im having an issue with connecting to a remote cluster.
first I tried to connect one node of es to another node and that was fine.
I am implementing the same steps I took to connect to remote clusters before but this time I have a 3 node cluster connecting to one node. I have tried to sort out all issues but still I am not getting any connection to be successful. I have opened up port 9300 on both sides.
is there a different way to set it up when connecting to the public IP on cluster or is it an ssl issue
really would appreciate some help !
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [October 11, 2021, 12:28am UTC](https://discuss.elastic.co/t/cross-cluster-replication-connection-issue/286150/2 "2021-10-11T00:28:25Z")
Please provide more information;
- What version?
- What does your config look like?
- What do your logs show?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 8, 2021, 9:20am UTC](https://discuss.elastic.co/t/cross-cluster-replication-connection-issue/286150/4 "2021-11-08T09:20:18Z")
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