PEAP/MSCHAPv2 - Host Account Authentication Only
Kevin Elliott
kevin_elliott at ci.juneau.ak.us
Wed Apr 25 21:52:15 CEST 2012
I have a working setup using FreeRadius 2.1.10 doing PEAP/MSCHAPv2 against a 2008 R2 Domain Controller via Samba 2.3.5.6 all running on Debian 6.0.4. My clients are D-Link DWL3200 and D-Link DAP-2360 access points. I am using the builtin Windows XP SP3 802.1x supplicant.
Currently FreeRadius will send back Access-Accepts for *both* user and machine/host accounts (in the Active Directory context of those terms). I would like to configure FreeRadius to ignore or reject authentication requests using the user creditionals. I spent the better part of yesterday afternoon searching the mailing list but I couldn't seem to conjure up the correct search terms to find out which configuration files I need to delve into to make this setting.
My goal is to implement 802.1x authentication for devices that are joined to the domain. I don't want people to be able to use their domain creditionals to authenticate non-domain devices to our wireless network.
Additionally, I just want to commend the developers and other folks associated with FreeRadius for a fantastic job. The configuration files are very well documented, I just can't figure out which one I need to re-read.
Thanks.
Debugging Output:
-----------------
FreeRADIUS Version 2.1.10, for host x86_64-pc-linux-gnu, built on Nov 14 2010 at 21:12:30
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/etc_group
including configuration file /etc/freeradius/modules/opendirectory
including configuration file /etc/freeradius/modules/dynamic_clients
including configuration file /etc/freeradius/modules/logintime
including configuration file /etc/freeradius/modules/preprocess
including configuration file /etc/freeradius/modules/realm
including configuration file /etc/freeradius/modules/detail.example.com
including configuration file /etc/freeradius/modules/sqlcounter_expire_on_login
including configuration file /etc/freeradius/modules/attr_filter
including configuration file /etc/freeradius/modules/attr_rewrite
including configuration file /etc/freeradius/modules/smsotp
including configuration file /etc/freeradius/modules/sql_log
including configuration file /etc/freeradius/modules/unix
including configuration file /etc/freeradius/modules/ldap
including configuration file /etc/freeradius/modules/perl
including configuration file /etc/freeradius/modules/digest
including configuration file /etc/freeradius/modules/checkval
including configuration file /etc/freeradius/modules/counter
including configuration file /etc/freeradius/modules/acct_unique
including configuration file /etc/freeradius/modules/chap
including configuration file /etc/freeradius/modules/files
including configuration file /etc/freeradius/modules/smbpasswd
including configuration file /etc/freeradius/modules/krb5
including configuration file /etc/freeradius/modules/passwd
including configuration file /etc/freeradius/modules/always
including configuration file /etc/freeradius/modules/linelog
including configuration file /etc/freeradius/modules/cui
including configuration file /etc/freeradius/modules/pap
including configuration file /etc/freeradius/modules/policy
including configuration file /etc/freeradius/modules/expiration
including configuration file /etc/freeradius/modules/wimax
including configuration file /etc/freeradius/modules/mac2vlan
including configuration file /etc/freeradius/modules/mschap
including configuration file /etc/freeradius/modules/otp
including configuration file /etc/freeradius/modules/ntlm_auth
including configuration file /etc/freeradius/modules/echo
including configuration file /etc/freeradius/modules/detail
including configuration file /etc/freeradius/modules/sradutmp
including configuration file /etc/freeradius/modules/expr
including configuration file /etc/freeradius/modules/exec
including configuration file /etc/freeradius/modules/radutmp
including configuration file /etc/freeradius/modules/inner-eap
including configuration file /etc/freeradius/modules/mac2ip
including configuration file /etc/freeradius/modules/ippool
including configuration file /etc/freeradius/modules/pam
including configuration file /etc/freeradius/modules/detail.log
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/inner-tunnel
including configuration file /etc/freeradius/sites-enabled/default
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 = yes
auth_badpass = yes
auth_goodpass = yes
}
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 = yes
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 192.168.41.9 {
require_message_authenticator = no
secret = ""
shortname = "cshop-dap2360-wap"
nastype = "other"
}
client 192.168.52.0/22 {
require_message_authenticator = no
secret = ""
shortname = "cbj-downtown"
nastype = "other"
}
radiusd: #### Instantiating modules ####
instantiate {
Module: Linked to module rlm_exec
Module: Instantiating module "exec" from file /etc/freeradius/modules/exec
exec {
wait = no
input_pairs = "request"
shell_escape = yes
}
Module: Linked to module rlm_expr
Module: Instantiating module "expr" from file /etc/freeradius/modules/expr
Module: Linked to module rlm_expiration
Module: Instantiating module "expiration" from file /etc/freeradius/modules/expiration
expiration {
reply-message = "Password Has Expired "
}
Module: Linked to module rlm_logintime
Module: Instantiating module "logintime" from file /etc/freeradius/modules/logintime
logintime {
reply-message = "You are calling outside your allowed timespan "
minimum-timeout = 60
}
}
radiusd: #### Loading Virtual Servers ####
server inner-tunnel { # from file /etc/freeradius/sites-enabled/inner-tunnel
modules {
Module: Checking authenticate {...} for more modules to load
Module: Linked to module rlm_pap
Module: Instantiating module "pap" from file /etc/freeradius/modules/pap
pap {
encryption_scheme = "auto"
auto_header = no
}
Module: Linked to module rlm_chap
Module: Instantiating module "chap" from file /etc/freeradius/modules/chap
Module: Linked to module rlm_mschap
Module: Instantiating module "mschap" from file /etc/freeradius/modules/mschap
mschap {
use_mppe = yes
require_encryption = no
require_strong = yes
with_ntdomain_hack = yes
ntlm_auth = "/usr/bin/ntlm_auth --request-nt-key --username=%{mschap:User-Name} --challenge=%{mschap:Challenge:-00} --nt-response=%{mschap:NT-Response:-00}"
}
Module: Linked to module rlm_unix
Module: Instantiating module "unix" from file /etc/freeradius/modules/unix
unix {
radwtmp = "/var/log/freeradius/radwtmp"
}
Module: Linked to module rlm_eap
Module: Instantiating module "eap" from file /etc/freeradius/eap.conf
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
CA_path = "/etc/freeradius/certs"
pem_file_type = yes
private_key_file = "/etc/freeradius/certs/server.key"
certificate_file = "/etc/freeradius/certs/server.pem"
CA_file = "/etc/freeradius/certs/ca.pem"
private_key_password = "SECRET"
dh_file = "/etc/freeradius/certs/dh"
random_file = "/dev/urandom"
fragment_size = 1024
include_length = yes
check_crl = no
cipher_list = "DEFAULT"
cache {
enable = no
lifetime = 24
max_entries = 255
}
verify {
}
}
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 = "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 module "suffix" from file /etc/freeradius/modules/realm
realm suffix {
format = "suffix"
delimiter = "@"
ignore_default = no
ignore_null = no
}
Module: Linked to module rlm_files
Module: Instantiating module "files" from file /etc/freeradius/modules/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 module "radutmp" from file /etc/freeradius/modules/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 module "attr_filter.access_reject" from file /etc/freeradius/modules/attr_filter
attr_filter attr_filter.access_reject {
attrsfile = "/etc/freeradius/attrs.access_reject"
key = "%{User-Name}"
}
} # modules
} # server
server { # from file /etc/freeradius/radiusd.conf
modules {
Module: Checking authenticate {...} for more modules to load
Module: Linked to module rlm_digest
Module: Instantiating module "digest" from file /etc/freeradius/modules/digest
Module: Checking authorize {...} for more modules to load
Module: Linked to module rlm_preprocess
Module: Instantiating module "preprocess" from file /etc/freeradius/modules/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 module "acct_unique" from file /etc/freeradius/modules/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 module "detail" from file /etc/freeradius/modules/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 module "attr_filter.accounting_response" from file /etc/freeradius/modules/attr_filter
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
}
listen {
type = "auth"
ipaddr = 127.0.0.1
port = 18120
}
Listening on authentication address * port 1812
Listening on accounting address * port 1813
Listening on authentication address 127.0.0.1 port 18120 as server inner-tunnel
Listening on proxy address * port 1814
Ready to process requests.
--
Kevin Elliott
Network Specialist
City and Borough of Juneau, MIS
(907) 586 - 0905
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