FreeIPA
FreeIPA is an open-source Identity, Policy and Audit (IPA) suite, sponsored by RedHat, which provides services similar to Microsoft's Active Directory
Configure as IPA client
Make sure your clocks are synchronized. Kerberos will not work otherwise. NTP is reccomended.
Follow the LDAP auth instructions to setup SSSD. Use a SSSD configuration similar to the following, substituting the requisite fields:
/etc/sssd/sssd.conf
[sssd] config_file_version = 2 services = nss, pam, sudo domains = DOMAIN debug_level = 9 [domain/DOMAIN] debug_level = 9 cache_credentials = true krb5_store_password_if_offline = true id_provider = ipa auth_provider = ipa ipa_domain=ipa.domain.com ipa_server=controller.domain.com ipa_hostname=fqdn.for.machine
Configure pam in similar way to LDAP, replacing pam_ldap.so
with pam_sss.so
.
Create an /etc/krb5.conf
file for your domain:
/etc/krb5.conf
[libdefaults] default_realm = DOMAIN.COM dns_lookup_realm = false dns_lookup_kdc = false rdns = false ticket_lifetime = 24h fowardable = yes allow_weak_crypto = yes [realms] DOMAIN.COM = { admin_server = controller.domain.com kdc = controller.domain.com:749 default_admin = domain.com } [domain_realm] domain.com = DOMAIN.COM .domain.com = DOMAIN.COM [logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmin.log
Add the client to the IPA server (From Fedora documentation):
- Login and request and admin session
kinit admin
- Create a host entry
ipa host-add --force --ip-address=192.168.166.31 client1.domain.com
- Set the client to be managed by IPA
ipa host-add-managedby --hosts=controller.domain.com client1.domain.com
- Generate keytab for the client
ipa-getkeytab -s controller.domain.com -p host/client1.domain.com -k /tmp/client1.keytab
Install the keytab on the client:
$ scp user@controller.domain.com:/tmp/client1.keytab krb5.keytab # mv krb5.ketab /etc/krb5.keytab