# Node-RED SSL using Letsencrypt & Certbot

**URL:** <https://discourse.nodered.org/t/node-red-ssl-using-letsencrypt-certbot/17606>\
**Category:** Share Your Projects\
**Tags:** security\
**Created:** [6 November 2019 20:22 UTC](https://discourse.nodered.org/t/node-red-ssl-using-letsencrypt-certbot/17606 "2019-11-06T20:22:22Z")\
**Posts on this page:** 1\
**Showing post:** 58

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**Author:** ![Paul-Reed](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/paul-reed/32/66906_2.png) [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Post date:** [9 May 2021 14:48 UTC](https://discourse.nodered.org/t/node-red-ssl-using-letsencrypt-certbot/17606/58 "2021-05-09T14:48:52Z")

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> [@fmarzocca](#):
>
> is this still valid?

Yes

> [@fmarzocca](#):
>
> Do I have to replace `cert.pem` with `fullchain.pem` ?

Just follow the guide, it explains what certificates to use.  
The `fullchain.pem` contains the `cert.pem` and the `chain.pem` which is needed for correct validation. See [Letsencrypt chain.pem or trusted root list cert? - #10 by JuergenAuer - Help - Let's Encrypt Community Support](https://community.letsencrypt.org/t/letsencrypt-chain-pem-or-trusted-root-list-cert/105921/10)

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