Stefan Adams wrote:
Hi!
Is it possible to specify a basedn of "dc=example,dc=com" with a scope of "sub" so that my search filters can apply to both "ou=People" and "ou=Computers" for example? It seems from my testing that the scope is "one" by default. From my experience it is a scope of "sub" by default. My people are in the data store like: dn: uid=gaa,ou=people,dc=ulticom,dc=com and my ldap section of radius.conf is: ldap { server = "ldap.ulticom.com" basedn = "dc=ulticom,dc=com" filter = "(&(objectclass=person)(uid=%{Stripped-User-Name:-%{User-Name}}))" do_xlat = yes base_filter = "(objectclass=*)" start_tls = no access_attr = "uid" dictionary_mapping = ${raddbdir}/ldap.attrmap ldap_connections_number = 5 timeout = 4 timelimit = 3 net_timeout = 1 }
The reason I would like to do this is to have the check box in Windows XP that says "Authenticate as computer..." checked. Doing this, FreeRADIUS is first presented with the credentials of the computer (host/name). Since I already have a computer account in ou=Computers, I figure I'd just add a cn=host/name attribute and modify the filter to be (|(uid=%{User-Name})(cn=%{User-Name})). But this can only work with a basedn of "dc=example,dc=com" and a scope of sub.
The thing to watch out for is the actual LDAP lookup may not be what you think. Without special regex matches or other tricks it will only lookup your hostname. For instance with a user of "gaa" on host "malachite", the supplied user value is "MALACHITE\GAA". This then results in an LDAP lookup of (from radiusd -X): ----------------------------------------------------------------------------- rlm_ldap: performing user authorization for MALACHITE\gaa radius_xlat: '(&(objectclass=person)(uid=MALACHITE))' radius_xlat: 'dc=ulticom,dc=com' rlm_ldap: ldap_get_conn: Checking Id: 0 rlm_ldap: ldap_get_conn: Got Id: 0 rlm_ldap: performing search in dc=ulticom,dc=com, with filter (&(objectclass=person)(uid=MALACHITE)) rlm_ldap: object not found or got ambiguous search result rlm_ldap: search failed rlm_ldap: ldap_release_conn: Release Id: 0 ----------------------------------------------------------------------------- I tried to handle it with this: hints file: ... DEFAULT NAS-IP-Address == 172.25.16.9, User-Name =~ "^(.*)\\\\(.*)" Hint = "8021XUSER", Stripped-User-Name = `${2}` ... users file: ... DEFAULT Hint == "8021XUSER" Fall-Through = 1 ... This strips the hostname off, mostly. I see it do several "uid=gaa" lookups, then one "uid=MALACHITE" and then it fails. If you get it to work, let me know. All I want to do is lookup the user. If you want to use the hostname, how will you match the password? What credentials are you expecting it to pass? I was under the assumption that when you select "Authenticate as computer..." it expects to use certificates (I may be wrong here). The format of the password when using the Windows domain style login is the Windows "encrypted" format (actually a hash, not encrypted, but you still can't recreate the clear text password). The the default configuration, this value is matched against the LDAP attribute "sambaNTPassword". This assumes that you are already using Samba for SMB/CIFS access. (I am).
Thanks! Stefan
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