[SSSD-users] Re: Config for joining AD forest and Kerberos cross-domain authentication
On 04/06/2018 09:59 PM, Jakub Hrozek wrote: On 6 Apr 2018, at 17:54, Bastian Rosner wrote: Unfortunately, users from other domains can't use their Kerberos ticket, only password works. These users are specifying their domain on login. This all sounds like the issue is not on the SSSD level, but either the krb5.conf configuration might be perhaps missing the domain-realm mappings, but what you said next was interesting: This is the krb5.conf for a host in one of the other domains. My client (both computer and user) is in sub1 and logs in to a host in sub2. $ cat /etc/krb5.conf [logging] default = FILE:/var/log/krb5libs.log [libdefaults] default_realm = SUB2.EXAMPLE.COM dns_lookup_realm = true dns_lookup_kdc = true ticket_lifetime = 24h renew_lifetime = 7d forwardable = true rdns = false Do I have to specify all domains in here? I thought the site/forest discovery of sssd-ad should take care of all the other trusted subdomains. Surprisingly, once logged in after authenticating with a password, foreign-domain users are able to issue a Kerberos ticket with kinit if they specify username@FQDN Hmm, are you saying that if you log in with a password you don’t get a TGT? Actually I do get a ticket after a logging in using password: $ klist Ticket cache: FILE:/tmp/krb5cc_94821677_hr943p Default principal: b...@sub1.example.com Valid starting Expires Service principal 04/06/2018 16:09:54 04/07/2018 02:09:54 krbtgt/sub1.example@sub1.example.com renew until 04/13/2018 16:09:54 This ticket does not work on sub2 hosts but can be used for gssapi-with-mic based authentication in sub1. ___ sssd-users mailing list -- sssd-users@lists.fedorahosted.org To unsubscribe send an email to sssd-users-le...@lists.fedorahosted.org
[SSSD-users] Re: Config for joining AD forest and Kerberos cross-domain authentication
> On 6 Apr 2018, at 17:54, Bastian Rosner wrote: > > Unfortunately, users from other domains can't use their Kerberos ticket, only > password works. These users are specifying their domain on login. This all sounds like the issue is not on the SSSD level, but either the krb5.conf configuration might be perhaps missing the domain-realm mappings, but what you said next was interesting: > Surprisingly, once logged in after authenticating with a password, > foreign-domain users are able to issue a Kerberos ticket with kinit if they > specify username@FQDN Hmm, are you saying that if you log in with a password you don’t get a TGT? ___ sssd-users mailing list -- sssd-users@lists.fedorahosted.org To unsubscribe send an email to sssd-users-le...@lists.fedorahosted.org
[SSSD-users] Config for joining AD forest and Kerberos cross-domain authentication
Hi, we are looking for a detailed configuration example to join an AD forest with working Kerberos authentication. Our AD infrastructure consists of a single forest with multiple (sub-)domains in two-way trust. No FreeIPA, just Windows 2012 AD servers and SSSD clients using version 1.11 and 1.15 on Debian. We can successfully join with sssd-ad using the "net ads join" command and users from the same domain can authenticate using a Kerberos ticket or password. Also mounting CIFS shares via pam-mount works fine in the same domain. Unfortunately, users from other domains can't use their Kerberos ticket, only password works. These users are specifying their domain on login. Surprisingly, once logged in after authenticating with a password, foreign-domain users are able to issue a Kerberos ticket with kinit if they specify username@FQDN (with capital letters). Also lookup up group membership of users from another domain works fine, so presumably the LDAP part is working correctly. This is our current config, are we missing something in order to get Kerberos cross-domain authentication working? $ cat /etc/sssd/sssd.conf [sssd] domains = sub1.example.com services = nss, pam, pac config_file_version = 2 [nss] filter_groups = root filter_users = root [pam] [domain/sub1.example.com] id_provider = ad auth_provider = ad chpass_provider = ad access_provider = ad cache_credentials = true ldap_referrals = false ldap_force_upper_case_realm = true ad_gpo_access_control = disabled override_homedir = /home/%u default_shell = /bin/bash Thanks and kind regards, Bastian ___ sssd-users mailing list -- sssd-users@lists.fedorahosted.org To unsubscribe send an email to sssd-users-le...@lists.fedorahosted.org
