Authenticating users on LDAP based on Group name
Jose Torres-Berrocal
jetsystemservices at gmail.com
Tue Apr 21 06:07:23 CEST 2015
I noticed that my problem is that when using group options I get authorized
successfully but does not get authenticated (Using Compare Check Items = No
results in Access-Accept). When not using group options I get authorized
and authenticated succesfully.
Is there a way to do a two pass process? If I could run the first pass
without group options and the second pass if authenticated run with group
options, I will get my desired result.
By the way I found how to run in debug mode in pfsense and do some custome
changes in the Users.conf file.
On Wed, Mar 25, 2015 at 2:24 PM, Jose Torres-Berrocal <
jetsystemservices at gmail.com> wrote:
> I am using the Freeradius2 2.1.12_1/2.2.5_3 pkg v1.6.10 in pfsense 2.1.5
>
> I can't modify the conf files manually. I have to use the pfsense WebGui.
>
> I could authenticate the users of the LDAP succesfully but when I try to
> authenticate using group membership options it fails with the following
> logs.
>
> Wed Mar 25 13:39:09 2015 : Info: Loaded virtual server <default>
> Wed Mar 25 13:39:09 2015 : Info: Ready to process requests.
> Wed Mar 25 13:39:27 2015 : Auth: Invalid user ( [ldap] Pairs do not
> match): [administrator] (from client squid port 111)
> Wed Mar 25 13:39:33 2015 : Auth: Invalid user ( [ldap] Pairs do not
> match): [administrator] (from client squid port 111)
> Wed Mar 25 13:39:34 2015 : Auth: Invalid user ( [ldap] Pairs do not
> match): [administrator] (from client squid port 111)
>
> On pfsense I do not see an option to run in debug mode, but probably you
> can help me with the pfsense produced ldap conf file. I do not use fancy
> stuff. After I get it working I may try to add TLS configuration to have
> encrypted comm or passwords.
>
> The LDAP is an Active Directory on a Windows 2003 Server.
> The group name is InternetAccess. (Is this case sensitive?)
> I do not have a radiusprofile, where there is mention of radiusprofile is
> a default generated line. (In pfsense I may change the line but can not
> removed it or comment it.)
>
> LDAP CONF:
>
> /usr/pbi/freeradius-i386/etc/raddb/modules/ldap
> # -*- text -*-
> #
> # $
>
> # Lightweight Directory Access Protocol (LDAP)
> #
> # This module definition allows you to use LDAP for
> # authorization and authentication.
> #
> # See raddb/sites-available/default for reference to the
> # ldap module in the authorize and authenticate sections.
> #
> # However, LDAP can be used for authentication ONLY when the
> # Access-Request packet contains a clear-text User-Password
> # attribute. LDAP authentication will NOT work for any other
> # authentication method.
> #
> # This means that LDAP servers don't understand EAP. If you
> # force "Auth-Type = LDAP", and then send the server a
> # request containing EAP authentication, then authentication
> # WILL NOT WORK.
> #
> # The solution is to use the default configuration, which does
> # work.
> #
> # Setting "Auth-Type = LDAP" is ALMOST ALWAYS WRONG. We
> # really can't emphasize this enough.
> #
> ldap {
> #
> # Note that this needs to match the name in the LDAP
> # server certificate, if you're using ldaps.
> server = "jetsms-srv2003.jetdom.local"
> port = "389"
> identity = "cn=pfsense,cn=Users,dc=jetdom,dc=local"
> password = Mypassword
> basedn = "cn=Users,dc=jetdom,dc=local"
> filter = "(sAMAccountName=%{%{Stripped-User-Name}:-%{User-Name}})"
> base_filter = "(objectclass=radiusprofile)"
>
> # How many connections to keep open to the LDAP server.
> # This saves time over opening a new LDAP socket for
> # every authentication request.
> ldap_connections_number = 5
>
> # seconds to wait for LDAP query to finish. default: 20
> timeout = 4
>
> # seconds LDAP server has to process the query (server-side
> # time limit). default: 20
> #
> # LDAP_OPT_TIMELIMIT is set to this value.
> timelimit = 3
>
> #
> # seconds to wait for response of the server. (network
> # failures) default: 10
> #
> # LDAP_OPT_NETWORK_TIMEOUT is set to this value.
> net_timeout = 1
>
> #
> # This subsection configures the tls related items
> # that control how FreeRADIUS connects to an LDAP
> # server. It contains all of the "tls_*" configuration
> # entries used in older versions of FreeRADIUS. Those
> # configuration entries can still be used, but we recommend
> # using these.
> #
> tls {
> # Set this to 'yes' to use TLS encrypted connections
> # to the LDAP database by using the StartTLS extended
> # operation.
> #
> # The StartTLS operation is supposed to be
> # used with normal ldap connections instead of
> # using ldaps (port 689) connections
> start_tls = no
>
> cacertfile = /usr/pbi/freeradius-i386/etc/raddb/certs/ca_ldap1_cert.pem
> cacertdir = /usr/pbi/freeradius-i386/etc/raddb/certs/
> certfile = /usr/pbi/freeradius-i386/etc/raddb/certs/radius_ldap1_cert.crt
> keyfile = /usr/pbi/freeradius-i386/etc/raddb/certs/radius_ldap1_cert.key
> randfile = /usr/pbi/freeradius-i386/etc/raddb/certs/random
>
> # Certificate Verification requirements. Can be:
> # "never" (don't even bother trying)
> # "allow" (try, but don't fail if the certificate
> # can't be verified)
> # "demand" (fail if the certificate doesn't verify.)
> #
> # The default is "allow"
> require_cert = "never"
> }
>
> ### default_profile = "cn=radprofile,ou=dialup,o=My Org,c=UA" ###
> ### profile_attribute = "radiusProfileDn" ###
> ### access_attr = "dialupAccess" ###
>
> # Mapping of RADIUS dictionary attributes to LDAP
> # directory attributes.
> dictionary_mapping = ${confdir}/ldap.attrmap
> ################## THE BELOW IS NOT COMPILED WITH FREERADIUS
> #################################
> # Set password_attribute = nspmPassword to get the
> # user's password from a Novell eDirectory
> # backend. This will work ONLY IF FreeRADIUS has been
> # built with the --with-edir configure option.
> #
> # See also the following links:
> #
> # http://www.novell.com/coolsolutions/appnote/16745.html
> #
> https://secure-support.novell.com/KanisaPlatform/Publishing/558/3009668_f.SAL_Public.html
> #
> # Novell may require TLS encrypted sessions before returning
> # the user's password.
> #
> # password_attribute = userPassword
>
> # Un-comment the following to disable Novell
> # eDirectory account policy check and intruder
> # detection. This will work *only if* FreeRADIUS is
> # configured to build with --with-edir option.
> #
> edir_account_policy_check = no
> ################## THE ABOVE IS NOT COMPILED WITH FREERADIUS
> #################################
> #
> # Group membership checking. Disabled by default.
> #
> groupname_attribute = cn
> groupmembership_filter =
> "(|(&(objectClass=GroupOfNames)(member=%{control:Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{control:Ldap-UserDn})))"
> groupmembership_attribute = InternetAccess
>
> compare_check_items = yes
> do_xlat = yes
> access_attr_used_for_allow = yes
>
> #
> # The following two configuration items are for Active Directory
> # compatibility. If you see the helpful "operations error"
> # being returned to the LDAP module, uncomment the next
> # two lines.
> #
>
> ### MS Active Directory Compatibility is disabled ###
>
> #
> # By default, if the packet contains a User-Password,
> # and no other module is configured to handle the
> # authentication, the LDAP module sets itself to do
> # LDAP bind for authentication.
> #
> # THIS WILL ONLY WORK FOR PAP AUTHENTICATION.
> #
> # THIS WILL NOT WORK FOR CHAP, MS-CHAP, or 802.1x (EAP).
> #
> # You can disable this behavior by setting the following
> # configuration entry to "no".
> #
> # allowed values: {no, yes}
> # set_auth_type = yes
>
> # ldap_debug: debug flag for LDAP SDK
> # (see OpenLDAP documentation). Set this to enable
> # huge amounts of LDAP debugging on the screen.
> # You should only use this if you are an LDAP expert.
> #
> # default: 0x0000 (no debugging messages)
> # Example:(LDAP_DEBUG_FILTER+LDAP_DEBUG_CONNS)
> #ldap_debug = 0x0028
>
> #
> # Keepalive configuration. This MAY NOT be supported by your
> # LDAP library. If these configuration entries appear in the
> # output of "radiusd -X", then they are supported. Otherwise,
> # they are unsupported, and changing them will do nothing.
> #
> keepalive {
> # LDAP_OPT_X_KEEPALIVE_IDLE
> idle = 60
>
> # LDAP_OPT_X_KEEPALIVE_PROBES
> probes = 3
>
> # LDAP_OPT_X_KEEPALIVE_INTERVAL
> interval = 3
> }
> }
>
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