# SSL Certificates

**URL:** https://www.wago.community/t/ssl-certificates/807
**Category:** Hardware and Linux
**Tags:** security
**Created:** [March 7, 2024, 9:28pm UTC](https://www.wago.community/t/ssl-certificates/807 "2024-03-07T21:28:40Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![quenorha](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/quenorha/32/429_2.png) [@quenorha](https://www.wago.community/u/quenorha)
#### Post date: [January 13, 2025, 7:38am UTC](https://www.wago.community/t/ssl-certificates/807/5 "2025-01-13T07:38:50Z")

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I’ve not tried with Let’s encrypt, and last time I tried with a PKI (self-signed certificate created with openssl) I wasn’t able to set it up. If you have any information I’m also interested !

> [@Tech Note: 3S Runtime with OPC UA Server](https://www.wago.community/t/tech-note-3s-runtime-with-opc-ua-server/305/9):
>
> Does anyone have successfully create his own certificates using openssl and not CODESYS ? The aim is to add the IP in the SubjectAltName, which is not part of the CODESYS generated certificates (only DNS is provided). Sor far here is what I’ve done : Create a ssl.conf file : [req] default\_bits = 3072 serial = 0 default\_md = sha256 distinguished\_name = subject req\_extensions = req\_ext x509\_extensions = req\_ext string\_mask = utf8only prompt = no [req\_ext] basicConstraints = critical, CA:T…

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