On 17/01/18 06:23, Colle Christophe wrote:
Hello,
I want to configure SQUID with two authentications methods:
- Kerberos (to do SSO with posts in an ActiveDirectory domain)
- Basic (Open LDAP directory)
The LDAP directory contains all the "official" accounts of people, the
AD directory contains some accounts (same identifiers as on LDAP) and
generic accounts.
Everything works fine, but I would like to add an extra check: The
Kerberos account must also exist in the LDAP directory in order to not
allow use of generic accounts.
I managed to do that with Squid but I get this behavior:
- Account present in AD + LDAP: OK
- Account present in AD but not in LDAP: KO
*Is it possible to force LDAP authentication if "check_ldap " fail ?*
<https://wiki.squid-cache.org/Features/Authentication#Can_I_use_different_authentication_mechanisms_together.3F>
Please note:
"Squid can not force the clients to choose one over the other."
You would be better to change your design and use an authentication
helper of your own that performs these complex relationship checks
instead of trying to warp Squid ACLs into doing things they are not
supposed to do.
You already have custom ACL helper. Convert that to one which handles
the auth credentials through the auth_param interface and does both the
login check and the LDAP check before declaring Kerberos credentials as
acceptable to Squid.
Also from the order of your squid.conf it is pretty confusing to do the
login (deny !authenticated) *after* all your check_ldap that rely on
credentials being valid.
Amos
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