# Encrypted inter-node communication port

**URL:** <https://community.cratedb.com/t/encrypted-inter-node-communication-port/317>\
**Category:** CrateDB\
**Created:** [January 14, 2020, 1:47pm UTC](https://community.cratedb.com/t/encrypted-inter-node-communication-port/317 "2020-01-14T13:47:16Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![versatildefuy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.cratedb.com/versatildefuy/32/142_2.png) [@versatildefuy](https://community.cratedb.com/u/versatildefuy)\
**Post date:** [January 14, 2020, 1:47pm UTC](https://community.cratedb.com/t/encrypted-inter-node-communication-port/317/1 "2020-01-14T13:47:16Z")

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Hello guys,

I set up a two nodes cluster of CrateDB (3.0.7) and I was trying to understand how to encrypt communications between nodes.

As far as I know, there are two variables for enabling SSL on psql and https, but how can I configure encryption for inter-node communication protocol (port 4300)?

Thank you in advance.

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**Author:** ![joemoe](https://sea2.discourse-cdn.com/flex020/user_avatar/community.cratedb.com/joemoe/32/65_2.png) [@joemoe](https://community.cratedb.com/u/joemoe)\
**Post date:** [January 14, 2020, 1:56pm UTC](https://community.cratedb.com/t/encrypted-inter-node-communication-port/317/2 "2020-01-14T13:56:55Z")

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hi, communication between nodes is encrypted anyhow.  
why are you using an old version of cratedb, if i may ask?

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**Author:** ![versatildefuy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.cratedb.com/versatildefuy/32/142_2.png) [@versatildefuy](https://community.cratedb.com/u/versatildefuy)\
**Post date:** [January 14, 2020, 2:07pm UTC](https://community.cratedb.com/t/encrypted-inter-node-communication-port/317/3 "2020-01-14T14:07:29Z")

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Thank you for your prompt response. 😃

We were using a single-node deployment and it works, so you know, if it works don’t change it.

Now we are studying a cluster deployment and we are trying to solve this kind of questions.

Update the version is also in my todo list.

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**Author:** ![joemoe](https://sea2.discourse-cdn.com/flex020/user_avatar/community.cratedb.com/joemoe/32/65_2.png) [@joemoe](https://community.cratedb.com/u/joemoe)\
**Post date:** [January 16, 2020, 1:19pm UTC](https://community.cratedb.com/t/encrypted-inter-node-communication-port/317/4 "2020-01-16T13:19:59Z")

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Happy to hear further feedback on your experience on deploying a cluster.