RE: EAP (PEAP)+ntlm_auth doesn't send password by it self

25 Mar 2010

      Good day Alan,

As I had thought the issue with the EAP packet was the configuration of Cisco access-point. I solved this but now I can not authenticate against Windows 2003 AD using ntlm_auth. This is the complete log:

FreeRADIUS Version 2.1.8, for host i486-pc-linux-gnu, built on Mar 18 2010 at 04:07:54
Copyright (C) 1999-2009 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 v2. 
Starting - reading configuration files ...
including configuration file /etc/freeradius/radiusd.conf
including configuration file /etc/freeradius/proxy.conf
including configuration file /etc/freeradius/clients.conf
including files in directory /etc/freeradius/modules/
including configuration file /etc/freeradius/modules/expr
including configuration file /etc/freeradius/modules/detail.example.com
including configuration file /etc/freeradius/modules/logintime
including configuration file /etc/freeradius/modules/ldap
including configuration file /etc/freeradius/modules/checkval
including configuration file /etc/freeradius/modules/realm
including configuration file /etc/freeradius/modules/mac2ip
including configuration file /etc/freeradius/modules/cui
including configuration file /etc/freeradius/modules/chap
including configuration file /etc/freeradius/modules/echo
including configuration file /etc/freeradius/modules/policy
including configuration file /etc/freeradius/modules/sql_log
including configuration file /etc/freeradius/modules/mschap
including configuration file /etc/freeradius/modules/krb5
including configuration file /etc/freeradius/modules/pam
including configuration file /etc/freeradius/modules/ippool
including configuration file /etc/freeradius/modules/attr_rewrite
including configuration file /etc/freeradius/modules/etc_group
including configuration file /etc/freeradius/modules/ntlm_auth
including configuration file /etc/freeradius/modules/perl
including configuration file /etc/freeradius/modules/passwd
including configuration file /etc/freeradius/modules/mschap.save
including configuration file /etc/freeradius/modules/attr_filter
including configuration file /etc/freeradius/modules/radutmp
including configuration file /etc/freeradius/modules/preprocess
including configuration file /etc/freeradius/modules/mac2vlan
including configuration file /etc/freeradius/modules/pap
including configuration file /etc/freeradius/modules/ntlm_auth.save
including configuration file /etc/freeradius/modules/smsotp
including configuration file /etc/freeradius/modules/sqlcounter_expire_on_login
including configuration file /etc/freeradius/modules/acct_unique
including configuration file /etc/freeradius/modules/expiration
including configuration file /etc/freeradius/modules/digest
including configuration file /etc/freeradius/modules/unix
including configuration file /etc/freeradius/modules/always
including configuration file /etc/freeradius/modules/otp
including configuration file /etc/freeradius/modules/files
including configuration file /etc/freeradius/modules/smbpasswd
including configuration file /etc/freeradius/modules/inner-eap
including configuration file /etc/freeradius/modules/wimax
including configuration file /etc/freeradius/modules/linelog
including configuration file /etc/freeradius/modules/exec
including configuration file /etc/freeradius/modules/detail.log
including configuration file /etc/freeradius/modules/detail
including configuration file /etc/freeradius/modules/sradutmp
including configuration file /etc/freeradius/modules/counter
including configuration file /etc/freeradius/eap.conf
including configuration file /etc/freeradius/policy.conf
including files in directory /etc/freeradius/sites-enabled/
including configuration file /etc/freeradius/sites-enabled/default
including configuration file /etc/freeradius/sites-enabled/inner-tunnel
main {
    user = "freerad"
    group = "freerad"
    allow_core_dumps = no
}
including dictionary file /etc/freeradius/dictionary
main {
    prefix = "/usr"
    localstatedir = "/var"
    logdir = "/var/log/freeradius"
    libdir = "/usr/lib/freeradius"
    radacctdir = "/var/log/freeradius/radacct"
    hostname_lookups = no
    max_request_time = 30
    cleanup_delay = 5
    max_requests = 1024
    pidfile = "/var/run/freeradius/freeradius.pid"
    checkrad = "/usr/sbin/checkrad"
    debug_level = 0
    proxy_requests = yes
 log {
    stripped_names = no
    auth = no
    auth_badpass = no
    auth_goodpass = no
 }
 security {
    max_attributes = 200
    reject_delay = 1
    status_server = yes
 }
}
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
    require_message_authenticator = no
    zombie_period = 40
    status_check = "status-server"
    ping_interval = 30
    check_interval = 30
    num_answers_to_alive = 3
    num_pings_to_alive = 3
    revive_interval = 120
    status_check_timeout = 4
    irt = 2
    mrt = 16
    mrc = 5
    mrd = 30
 }
 home_server_pool my_auth_failover {
    type = fail-over
    home_server = localhost
 }
 realm example.com {
    auth_pool = my_auth_failover
 }
 realm LOCAL {
 }
radiusd: #### Loading Clients ####
 client localhost {
    ipaddr = 127.0.0.1
    require_message_authenticator = no
    secret = "testing123"
    nastype = "other"
 }
 client localhost {
    ipaddr = 127.0.0.1
    require_message_authenticator = no
    secret = "testing123"
    nastype = "other"
 }
WARNING: Ignoring duplicate client 127.0.0.1
 client "Cisco AP's IP address" {
    require_message_authenticator = no
    secret = "alejandro"
    shortname = "cisco_ap1100"
    nastype = "cisco"
 }
 client 129.90.73.0 {
    require_message_authenticator = no
    secret = "alejandro"
    nastype = "cisco"
 }
radiusd: #### Instantiating modules ####
 instantiate {
 Module: Linked to module rlm_exec
 Module: Instantiating exec
  exec {
    wait = no
    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 inner-tunnel {
 modules {
 Module: Checking authenticate {...} for more modules to load
 Module: Instantiating ntlm_auth
  exec ntlm_auth {
    wait = yes
    program = "/usr/bin/ntlm_auth --request-nt-key --domain=MyDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}"
    input_pairs = "request"
    shell_escape = yes
  }
 Module: Linked to module rlm_pap
 Module: Instantiating pap
  pap {
    encryption_scheme = "auto"
    auto_header = no
  }
 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 = yes
    ntlm_auth = "/usr/bin/ntlm_auth --request-nt-key --username=%{%{Stripped-User-Name}:-%{User-Name:-None}} --challenge=%{mschap:Challenge:-00} --nt-response=%{mschap:NT-Response:-00}"
  }
 Module: Linked to module rlm_unix
 Module: Instantiating unix
  unix {
    radwtmp = "/var/log/freeradius/radwtmp"
  }
 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
    max_sessions = 4096
  }
 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/freeradius/certs/server_keycert.pem"
    certificate_file = "/etc/freeradius/certs/server_keycert.pem"
    CA_file = "/etc/freeradius/certs/cacert.pem"
    private_key_password = "whatever"
    dh_file = "/etc/freeradius/certs/dh"
    random_file = "/etc/freeradius/certs/random"
    fragment_size = 1024
    include_length = yes
    check_crl = no
    check_cert_cn = "%{User-Name}"
    cipher_list = "DEFAULT"
    make_cert_command = "/etc/freeradius/certs/bootstrap"
    cache {
    enable = no
    lifetime = 24
    max_entries = 255
    }
   }
 Module: Linked to sub-module rlm_eap_ttls
 Module: Instantiating eap-ttls
   ttls {
    default_eap_type = "peap"
    copy_request_to_tunnel = no
    use_tunneled_reply = no
    virtual_server = "inner-tunnel"
    include_length = yes
   }
 Module: Linked to sub-module rlm_eap_peap
 Module: Instantiating eap-peap
   peap {
    default_eap_type = "mschapv2"
    copy_request_to_tunnel = no
    use_tunneled_reply = no
    proxy_tunneled_request_as_eap = yes
    virtual_server = "inner-tunnel"
   }
 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_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/freeradius/users"
    acctusersfile = "/etc/freeradius/acct_users"
    preproxy_usersfile = "/etc/freeradius/preproxy_users"
    compat = "no"
  }
 Module: Checking session {...} for more modules to load
 Module: Linked to module rlm_radutmp
 Module: Instantiating radutmp
  radutmp {
    filename = "/var/log/freeradius/radutmp"
    username = "%{User-Name}"
    case_sensitive = yes
    check_with_nas = yes
    perm = 384
    callerid = yes
  }
 Module: Checking post-proxy {...} for more modules to load
 Module: Checking post-auth {...} for more modules to load
 Module: Linked to module rlm_attr_filter
 Module: Instantiating attr_filter.access_reject
  attr_filter attr_filter.access_reject {
    attrsfile = "/etc/freeradius/attrs.access_reject"
    key = "%{User-Name}"
  }
 } # modules
} # server
server {
 modules {
 Module: Checking authenticate {...} for more modules to load
 Module: Checking authorize {...} for more modules to load
 Module: Linked to module rlm_preprocess
 Module: Instantiating preprocess
  preprocess {
    huntgroups = "/etc/freeradius/huntgroups"
    hints = "/etc/freeradius/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: 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/freeradius/radacct/%{Client-IP-Address}/detail-%Y%m%d"
    header = "%t"
    detailperm = 384
    dirperm = 493
    locking = no
    log_packet_header = no
  }
 Module: Instantiating attr_filter.accounting_response
  attr_filter attr_filter.accounting_response {
    attrsfile = "/etc/freeradius/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
 } # modules
} # server
radiusd: #### Opening IP addresses and Ports ####
listen {
    type = "auth"
    ipaddr = *
    port = 0
}
listen {
    type = "acct"
    ipaddr = *
    port = 0
}
Listening on authentication address * port 1645
Listening on accounting address * port 1646
Listening on proxy address * port 1647
Ready to process requests.

rad_recv: Access-Request packet from host "Cisco AP's IP address" port 1645, id=55, length=236
    User-Name = "MyDOMAIN\\ORTEGACA"
    Framed-MTU = 1400
    Called-Station-Id = "0040.96a0.088f"
    Calling-Station-Id = "001f.3c28.46f3"
    Service-Type = Login-User
    Message-Authenticator = 0xe43ae3c3e67164ede561a0c37dd2b6e9
    EAP-Message = 0x0203005019800000004616030100410100003d03014baba5286a0713455be389a185e990e164e70a5b93f45a52ebe45aaa1b85184000001600040005000a000900640062000300060013001200630100
    NAS-Port-Type = Wireless-802.11
    NAS-Port = 3127
    State = 0x89f4148c89f70db4f66551dcf5baf778
    NAS-IP-Address = "Cisco AP's IP address"
    NAS-Identifier = "mw-ltqN1-P3-01"
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "MyDOMAIN\ORTEGACA", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] EAP packet type response id 3 length 80
[eap] Continuing tunnel setup.
++[eap] returns ok
Found Auth-Type = EAP
+- entering group authenticate {...}
[eap] Request found, released from the list
[eap] EAP/peap
[eap] processing type peap
[peap] processing EAP-TLS
  TLS Length 70
[peap] Length Included
[peap] eaptls_verify returned 11 
[peap]     (other): before/accept initialization 
[peap]     TLS_accept: before/accept initialization 
[peap] <<< TLS 1.0 Handshake [length 0041], ClientHello  
[peap]     TLS_accept: SSLv3 read client hello A 
[peap] >>> TLS 1.0 Handshake [length 002a], ServerHello  
[peap]     TLS_accept: SSLv3 write server hello A 
[peap] >>> TLS 1.0 Handshake [length 05e9], Certificate  
[peap]     TLS_accept: SSLv3 write certificate A 
[peap] >>> TLS 1.0 Handshake [length 0004], ServerHelloDone  
[peap]     TLS_accept: SSLv3 write server done A 
[peap]     TLS_accept: SSLv3 flush data 
[peap]     TLS_accept: Need to read more data: SSLv3 read client certificate A
In SSL Handshake Phase 
In SSL Accept mode  
[peap] eaptls_process returned 13 
[peap] EAPTLS_HANDLED
++[eap] returns handled
Sending Access-Challenge of id 55 to "Cisco AP's IP address" port 1645
    EAP-Message = 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
    EAP-Message = 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
    EAP-Message = 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
    EAP-Message = 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
    EAP-Message = 0x67613121301f06092a864886
    Message-Authenticator = 0x00000000000000000000000000000000
    State = 0x89f4148c88f00db4f66551dcf5baf778

My /etc/freeradius/modules/mschap file is:

mschap {
      with_ntdomain_hack = yes
      ntlm_auth = "/usr/bin/ntlm_auth --request-nt-key --username=%{mschap:User-Name:-None} --domain=%{%{mschap:NT-Domain}:-PDVSA2000} --challenge=%{mschap:Challenge:-00} --nt-response=%{mschap:NT-Response:-00}"
}

eap.conf

eap { 
       default_eap_type = peap

tls {
                certdir = ${confdir}/certs
                cadir = ${confdir}/certs
                private_key_password = whatever
                private_key_file = ${certdir}/server_keycert.pem
                certificate_file = ${certdir}/server_keycert.pem
                CA_file = ${cadir}/cacert.pem
                dh_file = ${certdir}/dh
                random_file = ${certdir}/random
                fragment_size = 1024
                include_length = yes
                check_cert_cn = %{User-Name}
                cipher_list = "DEFAULT"
        }
}

Everything is default. The question is: Why EAP - PEAP with ntlm_auth does not works? I feel I am pretty close to get my freeradius server works... :-(

Thank you,

Cesar

From: cesar8489@hotmail.com
To: freeradius-users@lists.freeradius.org
Subject: RE: EAP (PEAP)+ntlm_auth doesn't send password by it self
Date: Mon, 22 Mar 2010 19:49:41 -0400

Hi Alan,
...
Date: Sun, 21 Mar 2010 16:19:28 +0000
From: A.L.M.Buxey@lboro.ac.uk
To: freeradius-users@lists.freeradius.org
Subject: Re: EAP (PEAP)+ntlm_auth doesn't send password by it self
Hi,
...
[ntlm_auth] WARNING: Deprecated conditional expansion ":-". See "man unlang" for details
[ntlm_auth] ... expanding second conditional
you still havent fixed that basic thing - check out the default config from
the 2.1.8 tarball
Today I tried unsuccessful to figure out how solve the ":-" issue. I read "man unlang" but I could not find anything...
...
...
[ntlm_auth] No MS-CHAP-Challenge in the request.
[ntlm_auth] expand: --challenge=%{mschap:Challenge:-00} -> --challenge=
[ntlm_auth] No MS-CHAP-Response or MS-CHAP2-Response was found in the request.
[ntlm_auth] expand: --nt-response=%{mschap:NT-Response:-00} -> --nt-response=
hex decode of failed! (only got 0 bytes)
okay - so no challenge in the request - so what type of EAP authentication
are you doing?
I have been thinking it could be by a wrong configuration of the Cisco AP 1100. I will follow the instructions described at http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuratio...

However, I just want to do transparent authentications using PEAP with Microsoft Challenge Authentication Protocol (MS-CHAP) Version 2 without certificates (have you a recipe?)(http://cisco.com/en/US/prod/collateral/wireless/ps5678/ps430/prod_qas0900aec...)

I will let you know as soon as put my hands in action again.

Cesar

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RE: EAP (PEAP)+ntlm_auth doesn't send password by it self

Cesar Ortega