Troubleshooting FreeRadius +LDAP
Ricardo Sousa
ricardosousa25 at hotmail.com
Tue Sep 13 03:37:36 CEST 2011
Thanks for your help.
After reading all the documentation and config files, I decided to simply add new users to the directory in a last ditch effort and try again, and I got an Access-Accepted packet. Double checked.
Computers truly make me question my sanity sometimes.
Regards,
Ricardo
From: Commonn Systems
Sent: Monday, September 12, 2011 8:27 PM
To: freeradius-users at lists.freeradius.org
Subject: Re: Troubleshooting FreeRadius +LDAP
I am not a Pro neither, but I have had my share of sleepless nights trying to figure out the same issues here. The problem does not seem to be freeradius here but the LDAP server
The LDAP module cannot find the user "user1" in the LDAP database even though it successfully connected to it.
Try to locate "user1" in the directory using ldapsearch or another tool , then use that information in you basedn info (in ldap.conf). Users are generally stored in the cn=users,dc=domain,dc=tld container
I have found that with AD the ldap module cannot seem to find anything when searching the root of the domain ...
Gondar
On 9/12/2011 10:16 AM, Ricardo Sousa wrote:
Greetings list users,
I'm trying setup FreeRadius to work with LDAP in a deployment of ClearOS and have followed this How-To http://www.clearfoundation.com/docs/howtos/setting_up_freeradius2_to_use_ldap and this How-To http://deployingradius.com/documents/configuration/pap.html with success, up to the part of the inital radtest with credentials inserted in the users file. But when trying to use credentials from the LDAP directory, the Radius server returns an Access-Reject packet.
Below is the output from the debug mode.
***************************************************
login as: root
root at 192.168.3.5's password:
Last login: Mon Sep 12 13:31:45 2011 from 192.168.3.2
[root at system ~]# service radiusd stop
Stopping RADIUS server: [ OK ]
[root at system ~]# radiusd -X
FreeRADIUS Version 2.1.7, for host i686-redhat-linux-gnu, built on May 19 2010 at 13:10:59
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/raddb/radiusd.conf
including configuration file /etc/raddb/proxy.conf
including configuration file /etc/raddb/clearos-clients.conf
including files in directory /etc/raddb/modules/
including configuration file /etc/raddb/modules/radutmp
including configuration file /etc/raddb/modules/smbpasswd
including configuration file /etc/raddb/modules/realm
including configuration file /etc/raddb/modules/etc_group
including configuration file /etc/raddb/modules/attr_rewrite
including configuration file /etc/raddb/modules/wimax
including configuration file /etc/raddb/modules/detail
including configuration file /etc/raddb/modules/logintime
including configuration file /etc/raddb/modules/detail.example.com
including configuration file /etc/raddb/modules/files
including configuration file /etc/raddb/modules/counter
including configuration file /etc/raddb/modules/acct_unique
including configuration file /etc/raddb/modules/ippool
including configuration file /etc/raddb/modules/exec
including configuration file /etc/raddb/modules/inner-eap
including configuration file /etc/raddb/modules/always
including configuration file /etc/raddb/modules/passwd
including configuration file /etc/raddb/modules/expiration
including configuration file /etc/raddb/modules/checkval
including configuration file /etc/raddb/modules/linelog
including configuration file /etc/raddb/modules/sqlcounter_expire_on_login
including configuration file /etc/raddb/modules/digest
including configuration file /etc/raddb/modules/mschap
including configuration file /etc/raddb/modules/detail.log
including configuration file /etc/raddb/modules/echo
including configuration file /etc/raddb/modules/sradutmp
including configuration file /etc/raddb/modules/mac2ip
including configuration file /etc/raddb/modules/mac2vlan
including configuration file /etc/raddb/modules/pam
including configuration file /etc/raddb/modules/smsotp
including configuration file /etc/raddb/modules/ldap
including configuration file /etc/raddb/modules/unix
including configuration file /etc/raddb/modules/pap
including configuration file /etc/raddb/modules/sql_log
including configuration file /etc/raddb/modules/policy
including configuration file /etc/raddb/modules/expr
including configuration file /etc/raddb/modules/attr_filter
including configuration file /etc/raddb/modules/perl
including configuration file /etc/raddb/modules/cui
including configuration file /etc/raddb/modules/preprocess
including configuration file /etc/raddb/modules/otp
including configuration file /etc/raddb/modules/chap
including configuration file /etc/raddb/clearos-eap.conf
including configuration file /etc/raddb/policy.conf
including files in directory /etc/raddb/sites-enabled/
including configuration file /etc/raddb/sites-enabled/control-socket
including configuration file /etc/raddb/sites-enabled/inner-tunnel
including configuration file /etc/raddb/sites-enabled/default
including configuration file /etc/raddb/sites-enabled/clearos-inner-tunnel
group = radiusd
user = radiusd
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"
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 {
require_message_authenticator = no
secret = "mysecretpass"
shortname = "myclient"
}
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 = "/var/log/radius/radwtmp"
}
Module: Linked to module rlm_eap
Module: Instantiating eap
eap {
default_eap_type = "ttls"
timer_expire = 60
ignore_unknown_eap_types = no
cisco_accounting_username_bug = no
max_sessions = 2048
}
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/clearos-certs/key.pem"
certificate_file = "/etc/raddb/clearos-certs/cert.pem"
CA_file = "/etc/raddb/clearos-certs/ca.pem"
dh_file = "/etc/raddb/clearos-certs/dh1024.pem"
random_file = "/etc/raddb/clearos-certs/random"
fragment_size = 1024
include_length = yes
check_crl = no
cipher_list = "DEFAULT"
cache {
enable = no
lifetime = 24
max_entries = 255
}
}
Module: Linked to sub-module rlm_eap_ttls
Module: Instantiating eap-ttls
ttls {
default_eap_type = "md5"
copy_request_to_tunnel = no
use_tunneled_reply = no
virtual_server = "clearos-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/raddb/users"
acctusersfile = "/etc/raddb/acct_users"
preproxy_usersfile = "/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 = "/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 = "/etc/raddb/attrs.access_reject"
key = "%{User-Name}"
}
} # modules
} # server
server clearos-inner-tunnel {
modules {
Module: Checking authenticate {...} for more modules to load
Module: Checking authorize {...} for more modules to load
Module: Linked to module rlm_ldap
Module: Instantiating ldap
ldap {
server = "localhost"
port = 389
password = "CnboAg6Wb3lTe75u"
identity = "cn=manager,cn=internal,dc=clearos,dc=lan"
net_timeout = 5
timeout = 20
timelimit = 10
tls_mode = no
start_tls = no
tls_require_cert = "allow"
tls {
start_tls = no
require_cert = "allow"
}
basedn = "dc=clearos,dc=lan"
filter = "(uid=%{%{Stripped-User-Name}:-%{User-Name}})"
base_filter = "(objectclass=radiusprofile)"
auto_header = no
access_attr_used_for_allow = yes
groupname_attribute = "cn"
groupmembership_filter = "(|(&(objectClass=GroupOfNames)(member=%{control:Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{control:Ldap-UserDn})))"
dictionary_mapping = "/etc/raddb/ldap.attrmap"
ldap_debug = 0
ldap_connections_number = 5
compare_check_items = no
do_xlat = yes
set_auth_type = yes
}
rlm_ldap: Registering ldap_groupcmp for Ldap-Group
rlm_ldap: Registering ldap_xlat with xlat_name ldap
rlm_ldap: Over-riding set_auth_type, as there is no module ldap listed in the "authenticate" section.
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 dBCSPwd mapped to RADIUS LM-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
rlm_ldap: LDAP radiusTunnelType mapped to RADIUS Tunnel-Type
rlm_ldap: LDAP radiusTunnelMediumType mapped to RADIUS Tunnel-Medium-Type
rlm_ldap: LDAP radiusTunnelPrivateGroupId mapped to RADIUS Tunnel-Private-Group-Id
conns: 0x8eaf548
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
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/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: 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: 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
} # 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 = "/var/run/radiusd/radiusd.sock"
}
}
Listening on authentication address * port 1812
Listening on accounting address * port 1813
Listening on command file /var/run/radiusd/radiusd.sock
Listening on proxy address * port 1814
Ready to process requests.
rad_recv: Access-Request packet from host 127.0.0.1 port 40537, id=123, length=55
User-Name = "bob"
User-Password = "hello"
NAS-IP-Address = 127.0.0.1
NAS-Port = 0
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "bob", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] No EAP-Message, not doing EAP
++[eap] returns noop
[files] users: Matched entry bob at line 1
++[files] returns ok
[ldap] performing user authorization for bob
[ldap] expand: %{Stripped-User-Name} ->
[ldap] expand: %{User-Name} -> bob
[ldap] expand: (uid=%{%{Stripped-User-Name}:-%{User-Name}}) -> (uid=bob)
[ldap] expand: dc=clearos,dc=lan -> dc=clearos,dc=lan
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 localhost:389, authentication 0
rlm_ldap: bind as cn=manager,cn=internal,dc=clearos,dc=lan/CnboAg6Wb3lTe75u to localhost:389
rlm_ldap: waiting for bind result ...
rlm_ldap: Bind was successful
rlm_ldap: performing search in dc=clearos,dc=lan, with filter (uid=bob)
rlm_ldap: object not found
[ldap] search failed
rlm_ldap: ldap_release_conn: Release Id: 0
++[ldap] returns notfound
++[expiration] returns noop
++[logintime] returns noop
++[pap] returns updated
Found Auth-Type = PAP
+- entering group PAP {...}
[pap] login attempt with password "hello"
[pap] Using clear text password "hello"
[pap] User authenticated successfully
++[pap] returns ok
+- entering group post-auth {...}
++[exec] returns noop
Sending Access-Accept of id 123 to 127.0.0.1 port 40537
Finished request 0.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 0 ID 123 with timestamp +6
Ready to process requests.
rad_recv: Access-Request packet from host 127.0.0.1 port 52736, id=80, length=57
User-Name = "user1"
User-Password = "user1pass"
NAS-IP-Address = 127.0.0.1
NAS-Port = 0
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "user1", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] No EAP-Message, not doing EAP
++[eap] returns noop
rlm_ldap: Entering ldap_groupcmp()
[files] expand: dc=clearos,dc=lan -> dc=clearos,dc=lan
[files] expand: %{Stripped-User-Name} ->
[files] expand: %{User-Name} -> user1
[files] expand: (uid=%{%{Stripped-User-Name}:-%{User-Name}}) -> (uid=user1)
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
rlm_ldap: performing search in dc=clearos,dc=lan, with filter (uid=user1)
rlm_ldap: object not found
rlm_ldap::ldap_groupcmp: search failed
rlm_ldap: ldap_release_conn: Release Id: 0
[files] users: Matched entry DEFAULT at line 1
++[files] returns ok
[ldap] performing user authorization for user1
[ldap] expand: %{Stripped-User-Name} ->
[ldap] expand: %{User-Name} -> user1
[ldap] expand: (uid=%{%{Stripped-User-Name}:-%{User-Name}}) -> (uid=user1)
[ldap] expand: dc=clearos,dc=lan -> dc=clearos,dc=lan
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
rlm_ldap: performing search in dc=clearos,dc=lan, with filter (uid=user1)
rlm_ldap: object not found
[ldap] search failed
rlm_ldap: ldap_release_conn: Release Id: 0
++[ldap] returns notfound
++[expiration] returns noop
++[logintime] returns noop
[pap] Found existing Auth-Type, not changing it.
++[pap] returns noop
Found Auth-Type = Reject
Auth-Type = Reject, rejecting user
Failed to authenticate the user.
Using Post-Auth-Type Reject
+- entering group REJECT {...}
[attr_filter.access_reject] expand: %{User-Name} -> user1
attr_filter: Matched entry DEFAULT at line 11
++[attr_filter.access_reject] returns updated
Delaying reject of request 1 for 1 seconds
Going to the next request
Waking up in 0.9 seconds.
Sending delayed reject for request 1
Sending Access-Reject of id 80 to 127.0.0.1 port 52736
Waking up in 4.5 seconds.
***************************************************
Hope someone can show some light to this unix illiterate.
Regards,
Ricardo
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