How to use CHAP?

Karuna G. Kumar karuna.kumar at indscape.com
Wed Jun 9 10:05:29 CEST 2010


Hi,

I want to use CHAP for authenticating the user. When I am sending CHAP-Password to FreeRADIUS, I am getting the following error.

Found Auth-Type = CHAP
+- entering group CHAP {...}
[chap] rlm_chap: password supplied has wrong length
++[chap] returns invalid
Failed to authenticate the user.

What could be wrong? Please help. Thanks in advance.


Logs:
=====

FreeRADIUS Version 2.1.8, for host i686-pc-linux-gnu, built on May 10 2010 at 16:37:47
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 /usr/local/etc/raddb/radiusd.conf
including configuration file /usr/local/etc/raddb/proxy.conf
including configuration file /usr/local/etc/raddb/clients.conf
including files in directory /usr/local/etc/raddb/modules/
including configuration file /usr/local/etc/raddb/modules/unix
including configuration file /usr/local/etc/raddb/modules/exec
including configuration file /usr/local/etc/raddb/modules/echo
including configuration file /usr/local/etc/raddb/modules/wimax
including configuration file /usr/local/etc/raddb/modules/mac2ip
including configuration file /usr/local/etc/raddb/modules/perl
including configuration file /usr/local/etc/raddb/modules/sradutmp
including configuration file /usr/local/etc/raddb/modules/pap
including configuration file /usr/local/etc/raddb/modules/counter
including configuration file /usr/local/etc/raddb/modules/expr
including configuration file /usr/local/etc/raddb/modules/ippool
including configuration file /usr/local/etc/raddb/modules/smsotp
including configuration file /usr/local/etc/raddb/modules/realm
including configuration file /usr/local/etc/raddb/modules/always
including configuration file /usr/local/etc/raddb/modules/otp
including configuration file /usr/local/etc/raddb/modules/policy
including configuration file /usr/local/etc/raddb/modules/krb5
including configuration file /usr/local/etc/raddb/modules/files
including configuration file /usr/local/etc/raddb/modules/detail.log
including configuration file /usr/local/etc/raddb/modules/pam
including configuration file /usr/local/etc/raddb/modules/etc_group
including configuration file /usr/local/etc/raddb/modules/detail
including configuration file /usr/local/etc/raddb/modules/inner-eap
including configuration file /usr/local/etc/raddb/modules/smbpasswd
including configuration file /usr/local/etc/raddb/modules/digest
including configuration file /usr/local/etc/raddb/modules/attr_rewrite
including configuration file /usr/local/etc/raddb/modules/linelog
including configuration file /usr/local/etc/raddb/modules/expiration
including configuration file /usr/local/etc/raddb/modules/detail.example.com
including configuration file /usr/local/etc/raddb/modules/chap
including configuration file /usr/local/etc/raddb/modules/passwd
including configuration file /usr/local/etc/raddb/modules/logintime
including configuration file /usr/local/etc/raddb/modules/mac2vlan
including configuration file /usr/local/etc/raddb/modules/sql_log
including configuration file /usr/local/etc/raddb/modules/radutmp
including configuration file /usr/local/etc/raddb/modules/ldap
including configuration file /usr/local/etc/raddb/modules/acct_unique
including configuration file /usr/local/etc/raddb/modules/attr_filter
including configuration file /usr/local/etc/raddb/modules/checkval
including configuration file /usr/local/etc/raddb/modules/preprocess
including configuration file /usr/local/etc/raddb/modules/mschap
including configuration file /usr/local/etc/raddb/modules/sqlcounter_expire_on_login
including configuration file /usr/local/etc/raddb/modules/ntlm_auth
including configuration file /usr/local/etc/raddb/modules/cui
including configuration file /usr/local/etc/raddb/eap.conf
including configuration file /usr/local/etc/raddb/policy.conf
including files in directory /usr/local/etc/raddb/sites-enabled/
including configuration file /usr/local/etc/raddb/sites-enabled/default
including configuration file /usr/local/etc/raddb/sites-enabled/control-socket
including configuration file /usr/local/etc/raddb/sites-enabled/inner-tunnel
main {
	allow_core_dumps = no
}
including dictionary file /usr/local/etc/raddb/dictionary
main {
	prefix = "/usr/local"
	localstatedir = "/usr/local/var"
	logdir = "/usr/local/var/log/radius"
	libdir = "/usr/local/lib"
	radacctdir = "/usr/local/var/log/radius/radacct"
	hostname_lookups = no
	max_request_time = 30
	cleanup_delay = 5
	max_requests = 1024
	pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
	checkrad = "/usr/local/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 192.168.1.109 {
	require_message_authenticator = no
	secret = "secret"
 }
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: 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 = no
  }
 Module: Linked to module rlm_unix
 Module: Instantiating unix
  unix {
	radwtmp = "/usr/local/var/log/radius/radwtmp"
  }
 Module: Linked to module rlm_eap
 Module: Instantiating eap
  eap {
	default_eap_type = "md5"
	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"
   }
Ignoring EAP-Type/tls because we do not have OpenSSL support.
Ignoring EAP-Type/ttls because we do not have OpenSSL support.
Ignoring EAP-Type/peap because we do not have OpenSSL support.
 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 = "/usr/local/etc/raddb/users"
	acctusersfile = "/usr/local/etc/raddb/acct_users"
	preproxy_usersfile = "/usr/local/etc/raddb/preproxy_users"
	compat = "no"
  }
 Module: Checking session {...} for more modules to load
 Module: Linked to module rlm_radutmp
 Module: Instantiating radutmp
  radutmp {
	filename = "/usr/local/var/log/radius/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 = "/usr/local/etc/raddb/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 = "/usr/local/etc/raddb/huntgroups"
	hints = "/usr/local/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: 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 = "/usr/local/var/log/radius/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 = "/usr/local/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
 } # modules
} # server
radiusd: #### Opening IP addresses and Ports ####
listen {
	type = "auth"
	ipaddr = *
	port = 0
}
listen {
	type = "acct"
	ipaddr = *
	port = 0
}
listen {
	type = "control"
 listen {
	socket = "/usr/local/var/run/radiusd/radiusd.sock"
 }
}
Listening on authentication address * port 1812
Listening on accounting address * port 1813
Listening on command file /usr/local/var/run/radiusd/radiusd.sock
Listening on proxy address * port 1814
Ready to process requests.
rad_recv: Access-Request packet from host 192.168.1.109 port 51736, id=5, length=106
	User-Name = "steve"
	Acct-Session-Id = "001"
	NAS-Identifier = "NASIDTest"
	NAS-IP-Address = 192.168.1.120
	Called-Station-Id = "called"
	Calling-Station-Id = "caller"
	NAS-Port = 1234
	NAS-Port-Type = Ethernet
	CHAP-Password = 0x74657374696e67
	User-Password = "testing"
+- entering group authorize {...}
++[preprocess] returns ok
[chap] Setting 'Auth-Type := CHAP'
++[chap] returns ok
++[mschap] returns noop
[suffix] No '@' in User-Name = "steve", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns notfound
[files] users: Matched entry steve at line 76
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
[pap] Found existing Auth-Type, not changing it.
++[pap] returns noop
Found Auth-Type = CHAP
+- entering group CHAP {...}
[chap] rlm_chap: password supplied has wrong length
++[chap] returns invalid
Failed to authenticate the user.
Using Post-Auth-Type Reject
+- entering group REJECT {...}
[attr_filter.access_reject] 	expand: %{User-Name} -> steve
 attr_filter: Matched entry DEFAULT at line 11
++[attr_filter.access_reject] returns updated
Delaying reject of request 0 for 1 seconds
Going to the next request
Waking up in 0.9 seconds.
Sending delayed reject for request 0
Sending Access-Reject of id 5 to 192.168.1.109 port 51736
Waking up in 4.9 seconds.
Cleaning up request 0 ID 5 with timestamp +79
Ready to process requests.





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