Synology, TLS-ALPN-01


#1

Hi

i am using a Synology NAS with DSM 6.2.1 and a certificate from Let’s Encrypt. I got this message:

You need to update your ACME client to use an alternative validation
method (HTTP-01, DNS-01 or TLS-ALPN-01)

How can i do that?


#2

This isn’t a good answer, but your Synology is using TLS-SNI-01 validation now, but should automatically switch to HTTP-01 or DNS-01 after Let’s Encrypt disables TLS-SNI-01.

I’m not sure if your version is new enough, or if you need to upgrade.

If, for example, it starts trying to use HTTP-01 validation but it fails because a firewall is blocking port 80, you will run into trouble. You should monitor its logs or make sure your certificate is successfully renewed over the next few months.


#3

Its the newest DSM. Thanks for your answer, i will see if it works or not!


closed #4

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