Hi,

please find more information regarding smart card mapping in the man page for sss-certmap(5) and in the chapter Certificate Mapping Rules for Configuring Authentication on Smart Cards [1] of Linux Domain Identity, Authentication, and Policy Guide.
IdM allows you to configure rules that describe how to associate a certificate with a user. The rule extracts information from the certificate, and builds a LDAP search filter that should return a matching entry.

HTH,
flo

[1] https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/linux_domain_identity_authentication_and_policy_guide/configuring-certificate-mapping-rules-in-identity-management

On Tue, Jul 13, 2021 at 8:14 AM Angelo Alvarez via FreeIPA-users <freeipa-users@lists.fedorahosted.org> wrote:
Aloha.  I've configured our IdM server as an OpenLDAP identity provider for our VMware vCenter 6.7 server.  I'm able to login to our vCenter as the IdM user with username and password, but I'm unable to authenticate using smart card authentication.  My IdM domain is "xxxx.xxxx.mil", but my smart card is issued by the DoD, and the Subject Alternative Name (SAN) on my identity certificate shows  ex."Principal Name=1234567897000@mil".  When we used Active Directory authentication with vCenter, the user account properties for UPN needed to match the SAN value (ex.1234567897000@mil) from the users identiy certificate.  That said, if our domain name is ""xxxx.xxxx.mil", is it possible to have an IdM user account with username "first.last.usr" and a SSL certificate mapping that uses all or a portion of the SAN value (ex. "Principal Name=123456789700@mil") for smart card authentication?
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