Had the same issue which will hopefully be fixed in next release(?).
This worked for me
https://forum.opnsense.org/index.php?topic=43920.msg218984#msg218984
This worked for me
https://forum.opnsense.org/index.php?topic=43920.msg218984#msg218984
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Show posts MenuQuote from: astromeier on March 22, 2021, 08:04:03 PM
Hi Re4mstr,
I've used the "Alt names" entry in the Certificates Options:
See attached screenshot:
Base Certificate is www.m****e.de and "Alt Names" is m****e.de for subdomains.
hth