RADIUS & PEAP
Adrienne Rau
arau at barnard.edu
Thu Jul 5 21:45:42 CEST 2007
>Date: Tue, 03 Jul 2007 22:20:57 +0100
>From: Arran Cudbard-Bell <A.Cudbard-Bell at sussex.ac.uk>
>Subject: Re: RADIUS & PEAP
>To: FreeRadius users mailing list
> <freeradius-users at lists.freeradius.org>
>Message-ID: <468ABDB9.3080801 at sussex.ac.uk>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>If your using the Windows supplicant (which nearly everyone is, despite
>it's nastyness), and want passwordless authentication using EAP, your
>only other solution is to set up local PKI (public key infrastructure),
>and start issuing client certificates, and use EAP-PEAP-TLS (Microsofts
>version of EAP TLS).
>What you're attempting to do is impossible because MS-CHAP is a mutual
>authentication protocol. If the RADIUS server does not demonstrate
>knowledge of the password to the supplicant, a well-behaved the
>supplicant *should* refuse the connection.(I also wouldn't be surprised
if the RADIUS server >barfs because it
>can't get a valid user-password in order to construct the authentication
>response but I can't comment authoritatively on this).
>Finally, you can't authenticate MS-CHAP against /etc/passwd or
/etc/shadow; MS-CHAP >requires access to the cleartext password or its
NTLM hash.
Thanks for the response.
I was afraid that what I was attempting was impossible. I had been
trying to use PEAP rather than TTLS because PEAP is supported natively
by windows, but I've switched to TTLS, using the w2secure TTLS client
for windows. I followed the instructions on the freeradius site for
configuring system authentication with TTLS and EAP-MD5, but I am
getting the error 'rlm_unix: Attribute "User-Password" is required for
authentication'. When a run 'radtest' locally, I can authenticate
properly. I have copied the output from radiusd -X below.
Thank you for your help!
-Adrienne
radiusd -X
[root at CentOSTest raddb]# radiusd -fX
Starting - reading configuration files ...
reread_config: reading radiusd.conf
Config: including file: /usr/local/etc/raddb/proxy.conf
Config: including file: /usr/local/etc/raddb/clients.conf
Config: including file: /usr/local/etc/raddb/snmp.conf
Config: including file: /usr/local/etc/raddb/eap.conf
Config: including file: /usr/local/etc/raddb/sql.conf
main: prefix = "/usr/local"
main: localstatedir = "/usr/local/var"
main: logdir = "/usr/local/var/log/radius"
main: libdir = "/usr/local/lib"
main: radacctdir = "/usr/local/var/log/radius/radacct"
main: hostname_lookups = no
main: max_request_time = 30
main: cleanup_delay = 5
main: max_requests = 1024
main: delete_blocked_requests = 0
main: port = 0
main: allow_core_dumps = no
main: log_stripped_names = no
main: log_file = "/usr/local/var/log/radius/radius.log"
main: log_auth = no
main: log_auth_badpass = no
main: log_auth_goodpass = no
main: pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
main: user = "root"
main: group = "root"
main: usercollide = no
main: lower_user = "no"
main: lower_pass = "no"
main: nospace_user = "no"
main: nospace_pass = "no"
main: checkrad = "/usr/local/sbin/checkrad"
main: proxy_requests = yes
proxy: retry_delay = 5
proxy: retry_count = 3
proxy: synchronous = no
proxy: default_fallback = yes
proxy: dead_time = 120
proxy: post_proxy_authorize = no
proxy: wake_all_if_all_dead = no
security: max_attributes = 200
security: reject_delay = 1
security: status_server = no
main: debug_level = 0
read_config_files: reading dictionary
read_config_files: reading naslist
Using deprecated naslist file. Support for this will go away soon.
read_config_files: reading clients
read_config_files: reading realms
radiusd: entering modules setup
Module: Library search path is /usr/local/lib
Module: Loaded exec
exec: wait = yes
exec: program = "(null)"
exec: input_pairs = "request"
exec: output_pairs = "(null)"
exec: packet_type = "(null)"
rlm_exec: Wait=yes but no output defined. Did you mean output=none?
Module: Instantiated exec (exec)
Module: Loaded expr
Module: Instantiated expr (expr)
Module: Loaded PAP
pap: encryption_scheme = "crypt"
pap: auto_header = no
Module: Instantiated pap (pap)
Module: Loaded CHAP
Module: Instantiated chap (chap)
Module: Loaded MS-CHAP
mschap: use_mppe = yes
mschap: require_encryption = no
mschap: require_strong = no
mschap: with_ntdomain_hack = no
mschap: passwd = "(null)"
mschap: ntlm_auth = "(null)"
Module: Instantiated mschap (mschap)
Module: Loaded System
unix: cache = no
unix: passwd = "/etc/passwd"
unix: shadow = "/etc/shadow"
unix: group = "/etc/group"
unix: radwtmp = "/usr/local/var/log/radius/radwtmp"
unix: usegroup = no
unix: cache_reload = 600
Module: Instantiated unix (unix)
Module: Loaded eap
eap: default_eap_type = "ttls"
eap: timer_expire = 60
eap: ignore_unknown_eap_types = no
eap: cisco_accounting_username_bug = no
rlm_eap: Loaded and initialized type md5
rlm_eap: Loaded and initialized type leap
gtc: challenge = "Password: "
gtc: auth_type = "PAP"
rlm_eap: Loaded and initialized type gtc
tls: rsa_key_exchange = no
tls: dh_key_exchange = yes
tls: rsa_key_length = 512
tls: dh_key_length = 512
tls: verify_depth = 0
tls: CA_path = "(null)"
tls: pem_file_type = yes
tls: private_key_file = "/usr/local/etc/raddb/certs/cert-srv.pem"
tls: certificate_file = "/usr/local/etc/raddb/certs/cert-srv.pem"
tls: CA_file = "/usr/local/etc/raddb/certs/demoCA/cacert.pem"
tls: private_key_password = "whatever"
tls: dh_file = "/usr/local/etc/raddb/certs/dh"
tls: random_file = "/usr/local/etc/raddb/certs/random"
tls: fragment_size = 1024
tls: include_length = yes
tls: check_crl = no
tls: check_cert_cn = "(null)"
tls: cipher_list = "(null)"
tls: check_cert_issuer = "(null)"
rlm_eap_tls: Loading the certificate file as a chain
rlm_eap: Loaded and initialized type tls
ttls: default_eap_type = "md5"
ttls: copy_request_to_tunnel = no
ttls: use_tunneled_reply = no
rlm_eap: Loaded and initialized type ttls
mschapv2: with_ntdomain_hack = no
rlm_eap: Loaded and initialized type mschapv2
Module: Instantiated eap (eap)
Module: Loaded preprocess
preprocess: huntgroups = "/usr/local/etc/raddb/huntgroups"
preprocess: hints = "/usr/local/etc/raddb/hints"
preprocess: with_ascend_hack = no
preprocess: ascend_channels_per_line = 23
preprocess: with_ntdomain_hack = no
preprocess: with_specialix_jetstream_hack = no
preprocess: with_cisco_vsa_hack = no
preprocess: with_alvarion_vsa_hack = no
Module: Instantiated preprocess (preprocess)
Module: Loaded realm
realm: format = "suffix"
realm: delimiter = "@"
realm: ignore_default = no
realm: ignore_null = no
Module: Instantiated realm (suffix)
Module: Loaded files
files: usersfile = "/usr/local/etc/raddb/users"
files: acctusersfile = "/usr/local/etc/raddb/acct_users"
files: preproxy_usersfile = "/usr/local/etc/raddb/preproxy_users"
files: compat = "no"
Module: Instantiated files (files)
Module: Loaded Acct-Unique-Session-Id
acct_unique: key = "User-Name, Acct-Session-Id, NAS-IP-Address,
Client-IP-Address, NAS-Port"
Module: Instantiated acct_unique (acct_unique)
Module: Loaded detail
detail: detailfile =
"/usr/local/var/log/radius/radacct/%{Client-IP-Address}/detail-%Y%m%d"
detail: detailperm = 384
detail: dirperm = 493
detail: locking = no
Module: Instantiated detail (detail)
Module: Loaded radutmp
radutmp: filename = "/usr/local/var/log/radius/radutmp"
radutmp: username = "%{User-Name}"
radutmp: case_sensitive = yes
radutmp: check_with_nas = yes
radutmp: perm = 384
radutmp: callerid = yes
Module: Instantiated radutmp (radutmp)
Listening on authentication *:1812
Listening on accounting *:1813
Ready to process requests.
rad_recv: Access-Request packet from host 160.39.105.254:32769, id=81,
length=153
User-Name = "testuser"
NAS-IP-Address = 160.39.105.254
NAS-Port = 4097
Called-Station-Id = "00-90-0B-0A-9D-1C:mins"
Calling-Station-Id = "00-12-F0-7B-48-E7"
Framed-MTU = 900
NAS-Port-Type = Wireless-802.11
Connect-Info = "CONNECT Unknown radio"
EAP-Message = 0x0201000d017465737475736572
Message-Authenticator = 0x66faae1fa2563d763c27ceb6b6ef98e9
Processing the authorize section of radiusd.conf
modcall: entering group authorize for request 0
modcall[authorize]: module "preprocess" returns ok for request 0
modcall[authorize]: module "chap" returns noop for request 0
modcall[authorize]: module "mschap" returns noop for request 0
rlm_realm: No '@' in User-Name = "testuser", looking up realm NULL
rlm_realm: No such realm "NULL"
modcall[authorize]: module "suffix" returns noop for request 0
rlm_eap: EAP packet type response id 1 length 13
rlm_eap: No EAP Start, assuming it's an on-going EAP conversation
modcall[authorize]: module "eap" returns updated for request 0
users: Matched entry DEFAULT at line 76
modcall[authorize]: module "files" returns ok for request 0
rlm_pap: WARNING! No "known good" password found for the user.
Authentication may fail because of this.
modcall[authorize]: module "pap" returns noop for request 0
modcall: leaving group authorize (returns updated) for request 0
rad_check_password: Found Auth-Type System
auth: type "System"
Processing the authenticate section of radiusd.conf
modcall: entering group authenticate for request 0
rlm_unix: Attribute "User-Password" is required for authentication.
modcall[authenticate]: module "unix" returns invalid for request 0
modcall: leaving group authenticate (returns invalid) for request 0
auth: Failed to validate the user.
Delaying request 0 for 1 seconds
Finished request 0
Going to the next request
>josh.
-----Original Message-----
>>> From:
>>> freeradius-users-bounces+josh.howlett=ja.net at lists.freeradius.
>>> org
>>> [mailto:freeradius-users-bounces+josh.howlett=ja.net at lists.fre
>>>
>>>
>> eradius.org] On Behalf Of Adrienne Rau
>>
>>
>>> Sent: 03 July 2007 19:30
>>> To: freeradius-users at lists.freeradius.org
>>> Subject: RADIUS & PEAP
>>>
>>> I am configuring a wireless network with EAP Authentication.
>>> I can connect successfully with the following line in my users file.
>>>
>>> testuser User-Password == "testing"
>>>
>>> I would like to be able to authenticate with ANY password. I
>>> tried using the "!=" operand, but that causes an MS-CHAP
>>> incorrect response error. Is there any way to make EAP
>>> authenticate with any password. If not, how can I have it
>>> authenticate against the /etc/passwd and /etc/shadow files?
>>>
>>> Thank you for your help,
>>> Adrienne Rau
>>>
>>> -
>>> List info/subscribe/unsubscribe? See
>>> http://www.freeradius.org/list/users.html
>>>
>>>
>>>
>> -
>> List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
>>
>>
Adrienne Rau
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