@jeffsmith82 said in Login security - phishing resistant MFA:
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From what I understand you can list multiple sites against the same key at creation time though I might be wrong.
I don't believe the standard allows you to do this. Each passkey\registration is tied to a relying party which would be the current site you are accessing. You need to directly access the other servers (over HTTPS) to create registrations unique to them. If for example you access https://fire01... then the passkeys are scoped only to that FQDN and won't be presented when attempting to login to https://fire02... You would need to register a key for each server, or a common front-end that they all share.
If you create on the secondary it will get overwritten by when the config syncs from the primary to secondary i would assume.
It should not, my pending implementation allows you to register multiple times for the same user, which in theory should allow for other sites to be used.
The only potential challenge I see is that my implementation verifies the FQDN for registration based off the configuration files (system/hostname + system/domain) . So i'm not sure how your HA deployment deals with that on the config side for both servers. Something that would need to be tested.