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XGS3300 (SFOS 21.5.0 GA-Build171)
Created a Lets Encrypt cert 1 month ago but didn't need it and removed everything (including the LE cert).
There is only a NAT rule with 1 service left on that interface without any cert, virtual webserver or HTTP/S configured.
Now a HTTPS website (ACME?) on this site still running and reachable on WAN and also using (the removed!) LE cert.
Not really cool because this site is also listed now on Shodan & Co as running webserver and there is no way to ged rid of this via GUI. Bug?
Can you PN me the Support Access ID for this Firewall?
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My mistake and no firewall problem:
Didn't realise that there was still a NAT forwarding to a server (which uses LE ACME).