Problem with CHAP, rlm_ldap, edir

Lothar.Haeger at steria-mummert.de Lothar.Haeger at steria-mummert.de
Sun May 18 12:30:55 CEST 2008


Hi all,

I am trying to get freradius with edir to work. PAP is working already, but
CHAP does some strange things... here's a trace


Started freeradius 2.0.4 on SLES10SP1 by typing: "radiusd -X"

hamburgauth01:~ # radiusd -X
FreeRADIUS Version 2.0.4, for host i686-suse-linux-gnu, built on May  7
2008 at 21:45:01
Copyright (C) 1999-2008 The FreeRADIUS server project and contributors.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
You may redistribute copies of FreeRADIUS under the terms of the
GNU General Public License.
Starting - reading configuration files ...
including configuration file /etc/raddb/radiusd.conf
including configuration file /etc/raddb/proxy.conf
including configuration file /etc/raddb/clients.conf
including configuration file /etc/raddb/snmp.conf
including configuration file /etc/raddb/eap.conf
including configuration file /etc/raddb/sql.conf
including configuration file /etc/raddb/sql/mysql/dialup.conf
including configuration file /etc/raddb/sql/mysql/counter.conf
including configuration file /etc/raddb/policy.conf
including files in directory /etc/raddb/sites-enabled/
including configuration file /etc/raddb/sites-enabled/smc
including dictionary file /etc/raddb/dictionary
main {
        prefix = "/usr"
        localstatedir = "/var"
        logdir = "/var/log/radius"
        libdir = "/usr/lib/freeradius"
        radacctdir = "/var/log/radius/radacct"
        hostname_lookups = no
        max_request_time = 30
        cleanup_delay = 5
        max_requests = 1024
        allow_core_dumps = no
        pidfile = "/var/run/radiusd/radiusd.pid"
        user = "radiusd"
        group = "radiusd"
        checkrad = "/usr/sbin/checkrad"
        debug_level = 0
        proxy_requests = no
 security {
        max_attributes = 200
        reject_delay = 1
        status_server = yes
 }
}
 client localhost {
        ipaddr = 127.0.0.1
        require_message_authenticator = no
        secret = "testing123"
        nastype = "other"
 }
 client 10.110.0.0/16 {
        require_message_authenticator = no
        secret = "radiustest"
        shortname = "SMC_GS_LAN"
 }
radiusd: #### Loading Realms and Home Servers ####
 proxy server {
        retry_delay = 5
        retry_count = 3
        default_fallback = no
        dead_time = 120
        wake_all_if_all_dead = no
 }
 home_server localhost {
        ipaddr = 127.0.0.1
        port = 1812
        type = "auth"
        secret = "testing123"
        response_window = 20
        max_outstanding = 65536
        zombie_period = 40
        status_check = "status-server"
        ping_check = "none"
        ping_interval = 30
        check_interval = 30
        num_answers_to_alive = 3
        num_pings_to_alive = 3
        revive_interval = 120
        status_check_timeout = 4
 }
 home_server_pool my_auth_failover {
        type = fail-over
        home_server = localhost
 }
 realm example.com {
        auth_pool = my_auth_failover
 }
 realm LOCAL {
 }
 realm NULL {
 }
 realm DEFAULT {
 }
radiusd: #### Instantiating modules ####
 instantiate {
 Module: Linked to module rlm_exec
 Module: Instantiating exec
  exec {
        wait = yes
        input_pairs = "request"
        shell_escape = yes
  }
 Module: Linked to module rlm_expr
 Module: Instantiating expr
 Module: Linked to module rlm_expiration
 Module: Instantiating expiration
  expiration {
        reply-message = "Password Has Expired  "
  }
 Module: Linked to module rlm_logintime
 Module: Instantiating logintime
  logintime {
        reply-message = "You are calling outside your allowed timespan  "
        minimum-timeout = 60
  }
 }
radiusd: #### Loading Virtual Servers ####
server {
 modules {
 Module: Checking authenticate {...} for more modules to load
 Module: Linked to module rlm_pap
 Module: Instantiating pap
  pap {
        encryption_scheme = "auto"
        auto_header = yes
  }
 Module: Linked to module rlm_chap
 Module: Instantiating chap
 Module: Linked to module rlm_mschap
 Module: Instantiating mschap
  mschap {
        use_mppe = yes
        require_encryption = no
        require_strong = no
        with_ntdomain_hack = no
  }
 Module: Linked to module rlm_unix
 Module: Instantiating unix
  unix {
        radwtmp = "/var/log/radius/radwtmp"
  }
 Module: Linked to module rlm_ldap
 Module: Instantiating ldap
  ldap {
        server = "hamburgauth01.hamburg.mummert.de"
        port = 389
        password = "*******"
        identity = "cn=radiusadmin,o=admin"
        net_timeout = 1
        timeout = 4
        timelimit = 3
        tls_mode = no
        start_tls = no
        tls_require_cert = "allow"
   tls {
        start_tls = yes
        cacertfile = "/etc/raddb/certs/AUTH-TREE_CA.b64"
        require_cert = "demand"
   }
        basedn = "o=data"
        filter = "(uid=%{Stripped-User-Name:-%{User-Name}})"
        base_filter = "(objectclass=radiusprofile)"
        password_attribute = "nspmPassword"
        auto_header = no
        access_attr = "dialupAccess"
        access_attr_used_for_allow = yes
        groupname_attribute = "cn"
        groupmembership_filter =
"(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"
        dictionary_mapping = "/etc/raddb/ldap.attrmap"
        ldap_debug = 0
        ldap_connections_number = 5
        compare_check_items = no
        do_xlat = yes
        edir_account_policy_check = yes
        set_auth_type = yes
  }
rlm_ldap: Registering ldap_groupcmp for Ldap-Group
rlm_ldap: Registering ldap_xlat with xlat_name ldap
rlm_ldap: reading ldap<->radius mappings from file /etc/raddb/ldap.attrmap
rlm_ldap: LDAP radiusCheckItem mapped to RADIUS $GENERIC$
rlm_ldap: LDAP radiusReplyItem mapped to RADIUS $GENERIC$
rlm_ldap: LDAP radiusAuthType mapped to RADIUS Auth-Type
rlm_ldap: LDAP radiusSimultaneousUse mapped to RADIUS Simultaneous-Use
rlm_ldap: LDAP radiusCalledStationId mapped to RADIUS Called-Station-Id
rlm_ldap: LDAP radiusCallingStationId mapped to RADIUS Calling-Station-Id
rlm_ldap: LDAP lmPassword mapped to RADIUS LM-Password
rlm_ldap: LDAP ntPassword mapped to RADIUS NT-Password
rlm_ldap: LDAP sambaLmPassword mapped to RADIUS LM-Password
rlm_ldap: LDAP sambaNtPassword mapped to RADIUS NT-Password
rlm_ldap: LDAP acctFlags mapped to RADIUS SMB-Account-CTRL-TEXT
rlm_ldap: LDAP radiusExpiration mapped to RADIUS Expiration
rlm_ldap: LDAP radiusNASIpAddress mapped to RADIUS NAS-IP-Address
rlm_ldap: LDAP radiusServiceType mapped to RADIUS Service-Type
rlm_ldap: LDAP radiusFramedProtocol mapped to RADIUS Framed-Protocol
rlm_ldap: LDAP radiusFramedIPAddress mapped to RADIUS Framed-IP-Address
rlm_ldap: LDAP radiusFramedIPNetmask mapped to RADIUS Framed-IP-Netmask
rlm_ldap: LDAP radiusFramedRoute mapped to RADIUS Framed-Route
rlm_ldap: LDAP radiusFramedRouting mapped to RADIUS Framed-Routing
rlm_ldap: LDAP radiusFilterId mapped to RADIUS Filter-Id
rlm_ldap: LDAP radiusFramedMTU mapped to RADIUS Framed-MTU
rlm_ldap: LDAP radiusFramedCompression mapped to RADIUS Framed-Compression
rlm_ldap: LDAP radiusLoginIPHost mapped to RADIUS Login-IP-Host
rlm_ldap: LDAP radiusLoginService mapped to RADIUS Login-Service
rlm_ldap: LDAP radiusLoginTCPPort mapped to RADIUS Login-TCP-Port
rlm_ldap: LDAP radiusCallbackNumber mapped to RADIUS Callback-Number
rlm_ldap: LDAP radiusCallbackId mapped to RADIUS Callback-Id
rlm_ldap: LDAP radiusFramedIPXNetwork mapped to RADIUS Framed-IPX-Network
rlm_ldap: LDAP radiusClass mapped to RADIUS Class
rlm_ldap: LDAP radiusSessionTimeout mapped to RADIUS Session-Timeout
rlm_ldap: LDAP radiusIdleTimeout mapped to RADIUS Idle-Timeout
rlm_ldap: LDAP radiusTerminationAction mapped to RADIUS Termination-Action
rlm_ldap: LDAP radiusLoginLATService mapped to RADIUS Login-LAT-Service
rlm_ldap: LDAP radiusLoginLATNode mapped to RADIUS Login-LAT-Node
rlm_ldap: LDAP radiusLoginLATGroup mapped to RADIUS Login-LAT-Group
rlm_ldap: LDAP radiusFramedAppleTalkLink mapped to RADIUS
Framed-AppleTalk-Link
rlm_ldap: LDAP radiusFramedAppleTalkNetwork mapped to RADIUS
Framed-AppleTalk-Network
rlm_ldap: LDAP radiusFramedAppleTalkZone mapped to RADIUS
Framed-AppleTalk-Zone
rlm_ldap: LDAP radiusPortLimit mapped to RADIUS Port-Limit
rlm_ldap: LDAP radiusLoginLATPort mapped to RADIUS Login-LAT-Port
rlm_ldap: LDAP radiusReplyMessage mapped to RADIUS Reply-Message
conns: 0x81690c8
 Module: Linked to module rlm_eap
 Module: Instantiating eap
  eap {
        default_eap_type = "peap"
        timer_expire = 60
        ignore_unknown_eap_types = no
        cisco_accounting_username_bug = no
  }
 Module: Linked to sub-module rlm_eap_md5
 Module: Instantiating eap-md5
 Module: Linked to sub-module rlm_eap_leap
 Module: Instantiating eap-leap
 Module: Linked to sub-module rlm_eap_gtc
 Module: Instantiating eap-gtc
   gtc {
        challenge = "Password: "
        auth_type = "PAP"
   }
 Module: Linked to sub-module rlm_eap_tls
 Module: Instantiating eap-tls
   tls {
        rsa_key_exchange = no
        dh_key_exchange = yes
        rsa_key_length = 512
        dh_key_length = 512
        verify_depth = 0
        pem_file_type = yes
        private_key_file = "/etc/raddb/certs/server.pem"
        certificate_file = "/etc/raddb/certs/server.pem"
        CA_file = "/etc/raddb/certs/ca.pem"
        private_key_password = "whatever"
        dh_file = "/etc/raddb/certs/dh"
        random_file = "/etc/raddb/certs/random"
        fragment_size = 1024
        include_length = yes
        check_crl = no
        cipher_list = "DEFAULT"
        make_cert_command = "/etc/raddb/certs/bootstrap"
   }
 Module: Linked to sub-module rlm_eap_ttls
 Module: Instantiating eap-ttls
   ttls {
        default_eap_type = "md5"
        copy_request_to_tunnel = yes
        use_tunneled_reply = yes
   }
 Module: Linked to sub-module rlm_eap_peap
 Module: Instantiating eap-peap
   peap {
        default_eap_type = "mschapv2"
        copy_request_to_tunnel = yes
        use_tunneled_reply = yes
        proxy_tunneled_request_as_eap = yes
   }
 Module: Linked to sub-module rlm_eap_mschapv2
 Module: Instantiating eap-mschapv2
   mschapv2 {
        with_ntdomain_hack = no
   }
 Module: Checking authorize {...} for more modules to load
 Module: Linked to module rlm_preprocess
 Module: Instantiating preprocess
  preprocess {
        huntgroups = "/etc/raddb/huntgroups"
        hints = "/etc/raddb/hints"
        with_ascend_hack = no
        ascend_channels_per_line = 23
        with_ntdomain_hack = no
        with_specialix_jetstream_hack = no
        with_cisco_vsa_hack = no
        with_alvarion_vsa_hack = no
  }
 Module: Linked to module rlm_realm
 Module: Instantiating suffix
  realm suffix {
        format = "suffix"
        delimiter = "@"
        ignore_default = no
        ignore_null = no
  }
 Module: Linked to module rlm_files
 Module: Instantiating files
  files {
        usersfile = "/etc/raddb/users"
        acctusersfile = "/etc/raddb/acct_users"
        preproxy_usersfile = "/etc/raddb/preproxy_users"
        compat = "no"
  }
 Module: Checking preacct {...} for more modules to load
 Module: Linked to module rlm_acct_unique
 Module: Instantiating acct_unique
  acct_unique {
        key = "User-Name, Acct-Session-Id, NAS-IP-Address,
Client-IP-Address, NAS-Port"
  }
 Module: Checking accounting {...} for more modules to load
 Module: Linked to module rlm_detail
 Module: Instantiating detail
  detail {
        detailfile =
"/var/log/radius/radacct/%{Client-IP-Address}/detail-%Y%m%d"
        header = "%t"
        detailperm = 384
        dirperm = 493
        locking = no
        log_packet_header = no
  }
 Module: Linked to module rlm_radutmp
 Module: Instantiating radutmp
  radutmp {
        filename = "/var/log/radius/radutmp"
        username = "%{User-Name}"
        case_sensitive = yes
        check_with_nas = yes
        perm = 384
        callerid = yes
  }
 Module: Linked to module rlm_attr_filter
 Module: Instantiating attr_filter.accounting_response
  attr_filter attr_filter.accounting_response {
        attrsfile = "/etc/raddb/attrs.accounting_response"
        key = "%{User-Name}"
  }
 Module: Checking session {...} for more modules to load
 Module: Checking post-proxy {...} for more modules to load
 Module: Checking post-auth {...} for more modules to load
 Module: Instantiating attr_filter.access_reject
  attr_filter attr_filter.access_reject {
        attrsfile = "/etc/raddb/attrs.access_reject"
        key = "%{User-Name}"
  }
 }
}
radiusd: #### Opening IP addresses and Ports ####
listen {
        type = "auth"
        ipaddr = *
        port = 0
}
listen {
        type = "acct"
        ipaddr = *
        port = 0
}
main {
        snmp = no
        smux_password = ""
        snmp_write_access = no
}
Listening on authentication address * port 1812
Listening on accounting address * port 1813
Ready to process requests.


used ntradping to try to aithenticate with PAP - successfully. Note that
the password used to bind to edir is "test345":


rad_recv: Access-Request packet from host 10.110.9.60 port 57834, id=19,
length=55
        User-Name = "test user at realm"
        User-Password = "test345"
+- entering group authorize
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
    rlm_realm: Looking up realm "realm" for User-Name = "test user at realm"
    rlm_realm: Found realm "DEFAULT"
    rlm_realm: Adding Stripped-User-Name = "test user"
    rlm_realm: Adding Realm = "DEFAULT"
    rlm_realm: Authentication realm is LOCAL.
++[suffix] returns noop
rlm_ldap: - authorize
rlm_ldap: performing user authorization for test user
WARNING: Deprecated conditional expansion ":-".  See "man unlang" for
details
        expand: (uid=%{Stripped-User-Name:-%{User-Name}}) -> (uid=test
user)
        expand: o=data -> o=data
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
rlm_ldap: attempting LDAP reconnection
rlm_ldap: (re)connect to hamburgauth01.hamburg.mummert.de:389,
authentication 0
rlm_ldap: setting TLS CACert File to /etc/raddb/certs/AUTH-TREE_CA.b64
rlm_ldap: setting TLS Require Cert to demand
rlm_ldap: starting TLS
rlm_ldap: bind as cn=radiusadmin,o=admin/******** to
hamburgauth01.hamburg.mummert.de:389
rlm_ldap: waiting for bind result ...
rlm_ldap: Bind was successful
rlm_ldap: performing search in o=data, with filter (uid=test user)
rlm_ldap: checking if remote access for test user is allowed by
dialupAccess
rlm_ldap: Added the eDirectory password test345 in check items as
Cleartext-Password
rlm_ldap: No default NMAS login sequence
rlm_ldap: looking for check items in directory...
rlm_ldap: LDAP attribute radiusAuthType as RADIUS attribute Auth-Type ==
LDAP
rlm_ldap: looking for reply items in directory...
rlm_ldap: LDAP attribute radiusServiceType as RADIUS attribute Service-Type
= Login-User
rlm_ldap: user test user authorized to use remote access
rlm_ldap: ldap_release_conn: Release Id: 0
++[ldap] returns ok
  rlm_eap: No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns notfound
++[files] returns noop
++[expiration] returns noop
++[logintime] returns noop
rlm_pap: Found existing Auth-Type, not changing it.
++[pap] returns noop
  rad_check_password:  Found Auth-Type LDAP
auth: type "LDAP"
+- entering group LDAP
rlm_ldap: - authenticate
rlm_ldap: login attempt by "test user" with password "test345"
rlm_ldap: user DN: cn=test user,ou=users,o=data
rlm_ldap: (re)connect to hamburgauth01.hamburg.mummert.de:389,
authentication 1
rlm_ldap: setting TLS CACert File to /etc/raddb/certs/AUTH-TREE_CA.b64
rlm_ldap: setting TLS Require Cert to demand
rlm_ldap: starting TLS
rlm_ldap: bind as cn=test user,ou=users,o=data/test345 to
hamburgauth01.hamburg.mummert.de:389
rlm_ldap: waiting for bind result ...
rlm_ldap: Bind was successful
rlm_ldap: user test user authenticated succesfully
++[ldap] returns ok
Login OK: [test user at realm/test345] (from client SMC_GS_LAN port 0)
+- entering group post-auth
++[ldap] returns noop
++[exec] returns noop
Sending Access-Accept of id 19 to 10.110.9.60 port 57834
        Service-Type = Login-User
Finished request 0.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 0 ID 19 with timestamp +15
Ready to process requests.


Now changed ntradping to use CHAP, everything else left as before, incl.
the password:


rad_recv: Access-Request packet from host 10.110.9.60 port 57851, id=20,
length=56
        User-Name = "test user at realm"
        CHAP-Password = 0x161b57b44ca4d299bb697e24be03e881a8
+- entering group authorize
++[preprocess] returns ok
  rlm_chap: Setting 'Auth-Type := CHAP'
++[chap] returns ok
++[mschap] returns noop
    rlm_realm: Looking up realm "realm" for User-Name = "test user at realm"
    rlm_realm: Found realm "DEFAULT"
    rlm_realm: Adding Stripped-User-Name = "test user"
    rlm_realm: Adding Realm = "DEFAULT"
    rlm_realm: Authentication realm is LOCAL.
++[suffix] returns noop
rlm_ldap: - authorize
rlm_ldap: performing user authorization for test user
WARNING: Deprecated conditional expansion ":-".  See "man unlang" for
details
        expand: (uid=%{Stripped-User-Name:-%{User-Name}}) -> (uid=test
user)
        expand: o=data -> o=data
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
rlm_ldap: performing search in o=data, with filter (uid=test user)
rlm_ldap: checking if remote access for test user is allowed by
dialupAccess
rlm_ldap: Added the eDirectory password test345 in check items as
Cleartext-Password
rlm_ldap: No default NMAS login sequence
rlm_ldap: looking for check items in directory...
rlm_ldap: LDAP attribute radiusAuthType as RADIUS attribute Auth-Type ==
LDAP
rlm_ldap: looking for reply items in directory...
rlm_ldap: LDAP attribute radiusServiceType as RADIUS attribute Service-Type
= Login-User
rlm_ldap: user test user authorized to use remote access
rlm_ldap: ldap_release_conn: Release Id: 0
++[ldap] returns ok
  rlm_eap: No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns notfound
++[files] returns noop
++[expiration] returns noop
++[logintime] returns noop
rlm_pap: Found existing Auth-Type, not changing it.
++[pap] returns noop
  rad_check_password:  Found Auth-Type LDAP
auth: type "LDAP"
+- entering group LDAP
rlm_ldap: - authenticate
rlm_ldap: Attribute "User-Password" is required for authentication. Cannot
use "CHAP-Password".
++[ldap] returns invalid
auth: Failed to validate the user.
Login incorrect: [test user at realm/<CHAP-Password>] (from client SMC_GS_LAN
port 0)
  Found Post-Auth-Type Reject
+- entering group REJECT
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
rlm_ldap: attempting LDAP reconnection
rlm_ldap: (re)connect to hamburgauth01.hamburg.mummert.de:389,
authentication 0
rlm_ldap: setting TLS CACert File to /etc/raddb/certs/AUTH-TREE_CA.b64
rlm_ldap: setting TLS Require Cert to demand
rlm_ldap: starting TLS
rlm_ldap: bind as cn=test user,ou=users,o=data/aest345 to
hamburgauth01.hamburg.mummert.de:389
rlm_ldap: waiting for bind result ...
rlm_ldap: LDAP login failed: check identity, password settings in ldap
section of radiusd.conf
rlm_ldap: eDirectory account policy check failed.
rlm_ldap: NDS error: failed authentication (-669)
rlm_ldap: ldap_release_conn: Release Id: 0
++[ldap] returns reject
Delaying reject of request 1 for 1 seconds
Going to the next request
Sending delayed reject for request 1
Sending Access-Reject of id 20 to 10.110.9.60 port 57851
        Service-Type = Login-User
        Reply-Message = "NDS error: failed authentication (-669)"
Waking up in 2.9 seconds.
Cleaning up request 1 ID 20 with timestamp +28
Ready to process requests.


ldap bind fails because the password is now "aest345"!!! this happens to
whatever password is typed in at the client: the first char os replaced
with an "a", so auth always fails. Funnily, if i set the account's password
to "abcd345" CHAP troes to authenticate with "bbcd345".... any ideas?

Thanks, Lothar
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeradius.org/pipermail/freeradius-users/attachments/20080518/ba453a47/attachment.html>


More information about the Freeradius-Users mailing list