FreeRADIUS 2.1.6 and Cisco 802.1x MAC Authentication with mac-auth-bypass
Amaru Netapshaak
postfix_amaru at yahoo.com
Tue Aug 11 16:46:57 CEST 2009
Hello!
I am struggling with a mac-auth-bypass problem with my Cisco 6509s and my FreeRADIUS
server. The 6509 sends the radius server the request, FreeRADIUS authenticates it as
OK, but yet my port remains in the "authfail" state on the switch. Does anyone have
any ideas? Here is my debug output from the radius box:
The first part is the debug output / freeradius startup, the 2nd part is a request I get
from my switch to authenticate some "azbycx" user, so I just added it to users for now,
and then the 3rd part is the request/response for my MAC address to be authenticated.
Thanks for your help!
(root at nms) % ./radiusd -X
FreeRADIUS Version 2.1.6, for host i386-unknown-freebsd7.2, built on Aug 6 2009 at 16:34:56
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/freeradius/etc/raddb/radiusd.conf
including configuration file /usr/local/freeradius/etc/raddb/proxy.conf
including configuration file /usr/local/freeradius/etc/raddb/clients.conf
including files in directory /usr/local/freeradius/etc/raddb/modules/
including configuration file /usr/local/freeradius/etc/raddb/modules/acct_unique
including configuration file /usr/local/freeradius/etc/raddb/modules/always
including configuration file /usr/local/freeradius/etc/raddb/modules/attr_filter
including configuration file /usr/local/freeradius/etc/raddb/modules/attr_rewrite
including configuration file /usr/local/freeradius/etc/raddb/modules/chap
including configuration file /usr/local/freeradius/etc/raddb/modules/checkval
including configuration file /usr/local/freeradius/etc/raddb/modules/counter
including configuration file /usr/local/freeradius/etc/raddb/modules/detail
including configuration file /usr/local/freeradius/etc/raddb/modules/detail.example.com
including configuration file /usr/local/freeradius/etc/raddb/modules/detail.log
including configuration file /usr/local/freeradius/etc/raddb/modules/digest
including configuration file /usr/local/freeradius/etc/raddb/modules/echo
including configuration file /usr/local/freeradius/etc/raddb/modules/etc_group
including configuration file /usr/local/freeradius/etc/raddb/modules/exec
including configuration file /usr/local/freeradius/etc/raddb/modules/expiration
including configuration file /usr/local/freeradius/etc/raddb/modules/expr
including configuration file /usr/local/freeradius/etc/raddb/modules/files
including configuration file /usr/local/freeradius/etc/raddb/modules/inner-eap
including configuration file /usr/local/freeradius/etc/raddb/modules/ippool
including configuration file /usr/local/freeradius/etc/raddb/modules/krb5
including configuration file /usr/local/freeradius/etc/raddb/modules/ldap
including configuration file /usr/local/freeradius/etc/raddb/modules/linelog
including configuration file /usr/local/freeradius/etc/raddb/modules/logintime
including configuration file /usr/local/freeradius/etc/raddb/modules/mac2ip
including configuration file /usr/local/freeradius/etc/raddb/modules/mac2vlan
including configuration file /usr/local/freeradius/etc/raddb/modules/mschap
including configuration file /usr/local/freeradius/etc/raddb/modules/otp
including configuration file /usr/local/freeradius/etc/raddb/modules/pam
including configuration file /usr/local/freeradius/etc/raddb/modules/pap
including configuration file /usr/local/freeradius/etc/raddb/modules/passwd
including configuration file /usr/local/freeradius/etc/raddb/modules/perl
including configuration file /usr/local/freeradius/etc/raddb/modules/policy
including configuration file /usr/local/freeradius/etc/raddb/modules/preprocess
including configuration file /usr/local/freeradius/etc/raddb/modules/radutmp
including configuration file /usr/local/freeradius/etc/raddb/modules/realm
including configuration file /usr/local/freeradius/etc/raddb/modules/smbpasswd
including configuration file /usr/local/freeradius/etc/raddb/modules/smsotp
including configuration file /usr/local/freeradius/etc/raddb/modules/sql_log
including configuration file /usr/local/freeradius/etc/raddb/modules/sqlcounter_expire_on_login
including configuration file /usr/local/freeradius/etc/raddb/modules/sradutmp
including configuration file /usr/local/freeradius/etc/raddb/modules/unix
including configuration file /usr/local/freeradius/etc/raddb/modules/wimax
including configuration file /usr/local/freeradius/etc/raddb/eap.conf
including configuration file /usr/local/freeradius/etc/raddb/policy.conf
including files in directory /usr/local/freeradius/etc/raddb/sites-enabled/
including configuration file /usr/local/freeradius/etc/raddb/sites-enabled/default
including configuration file /usr/local/freeradius/etc/raddb/sites-enabled/inner-tunnel
including configuration file /usr/local/freeradius/etc/raddb/sites-enabled/control-socket
group = radius
user = radius
including dictionary file /usr/local/freeradius/etc/raddb/dictionary
main {
prefix = "/usr/local/freeradius"
localstatedir = "/usr/local/freeradius/var"
logdir = "/var/log/radius"
libdir = "/usr/local/freeradius/lib"
radacctdir = "/var/log/radius/radacct"
hostname_lookups = yes
max_request_time = 20
cleanup_delay = 5
max_requests = 2048
allow_core_dumps = no
pidfile = "/var/run/radiusd.pid"
checkrad = "/usr/local/freeradius/sbin/checkrad"
debug_level = 0
proxy_requests = yes
log {
stripped_names = no
auth = yes
auth_badpass = yes
auth_goodpass = yes
}
security {
max_attributes = 50
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
netmask = 32
require_message_authenticator = no
secret = "test1111"
shortname = "localhost"
nastype = "other"
}
client nhed-nms {
ipaddr = 172.16.0.2
netmask = 32
require_message_authenticator = no
secret = "test1111"
shortname = "nhed-nms"
nastype = "other"
}
client Hib_C6K {
ipaddr = 172.16.0.1
netmask = 32
require_message_authenticator = no
secret = "test1111"
shortname = "Hib_C6K"
}
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 = "md5"
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 = "/usr/local/freeradius/etc/raddb/certs/server.pem"
certificate_file = "/usr/local/freeradius/etc/raddb/certs/server.pem"
CA_file = "/usr/local/freeradius/etc/raddb/certs/ca.pem"
private_key_password = "whatever"
dh_file = "/usr/local/freeradius/etc/raddb/certs/dh"
random_file = "/usr/local/freeradius/etc/raddb/certs/random"
fragment_size = 1024
include_length = yes
check_crl = no
cipher_list = "DEFAULT"
make_cert_command = "/usr/local/freeradius/etc/raddb/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 = "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 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/freeradius/etc/raddb/users"
acctusersfile = "/usr/local/freeradius/etc/raddb/acct_users"
preproxy_usersfile = "/usr/local/freeradius/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 = "/usr/local/freeradius/etc/raddb/attrs.access_reject"
key = "%{User-Name}"
}
} # modules
} # server
server {
modules {
Module: Checking authenticate {...} for more modules to load
Module: Linked to module rlm_always
Module: Instantiating ok
always ok {
rcode = "ok"
simulcount = 0
mpp = no
}
Module: Checking authorize {...} for more modules to load
Module: Linked to module rlm_preprocess
Module: Instantiating preprocess
preprocess {
huntgroups = "/usr/local/freeradius/etc/raddb/huntgroups"
hints = "/usr/local/freeradius/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 = "/usr/local/freeradius/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 = 172.16.0.2
port = 0
}
listen {
type = "acct"
ipaddr = 172.16.0.2
port = 0
}
listen {
type = "control"
listen {
socket = "/var/tmp/radiusd.sock"
}
}
Listening on authentication address 172.16.0.2 port 1812
Listening on accounting address 172.16.0.2 port 1813
Listening on command file /var/tmp/radiusd.sock
Listening on proxy address 172.16.0.2 port 1814
Ready to process requests.
==============================================================================================================
rad_recv: Access-Request packet from host 172.16.0.1 port 1024, id=85, length=65
User-Name = "azbycx"
NAS-IP-Address = 172.16.0.1
EAP-Message = 0x0255000b01617a62796378
Message-Authenticator = 0x37608640b025ad4025d8c51350583edd
+- entering group authorize {...}
++? if ((Service-Type == 'Call-Check') || (User-Name =~ /^%{Calling-Station-ID}$/i))
(Attribute Service-Type was not found)
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "azbycx", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] EAP packet type response id 85 length 11
[eap] No EAP Start, assuming it's an on-going EAP conversation
++[eap] returns updated
++[unix] returns notfound
[files] users: Matched entry azbycx at line 1
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
[pap] Found existing Auth-Type, not changing it.
++[pap] returns noop
Found Auth-Type = EAP
+- entering group authenticate {...}
[eap] EAP Identity
[eap] processing type md5
rlm_eap_md5: Issuing Challenge
++[eap] returns handled
Sending Access-Challenge of id 85 to 172.16.0.1 port 1024
EAP-Message = 0x0156001604106fa6792845d7180ceea44d483cb7e3d7
Message-Authenticator = 0x00000000000000000000000000000000
State = 0x087297780824931641b6155be504b595
Finished request 0.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 0 ID 85 with timestamp +4
Ready to process requests.
==============================================================================================================
rad_recv: Access-Request packet from host 172.16.0.1 port 1024, id=85, length=100
NAS-IP-Address = 172.16.0.1
NAS-Port = 515
Service-Type = Call-Check
Called-Station-Id = "00-50-3e-97-53-ff"
Calling-Station-Id = "00-1c-23-12-3a-73"
NAS-Port-Type = Ethernet
Message-Authenticator = 0xcbf19506604c664a4b885a8c5a47a9a6
+- entering group authorize {...}
++? if ((Service-Type == 'Call-Check') || (User-Name =~ /^%{Calling-Station-ID}$/i))
?? Evaluating (Service-Type == 'Call-Check') -> TRUE
?? Skipping (User-Name =~ /^%{Calling-Station-ID}$/i)
++? if ((Service-Type == 'Call-Check') || (User-Name =~ /^%{Calling-Station-ID}$/i)) -> TRUE
++- entering if ((Service-Type == 'Call-Check') || (User-Name =~ /^%{Calling-Station-ID}$/i)) {...}
expand: %{Calling-Station-ID} -> 00-1c-23-12-3a-73
expand: %{Calling-Station-ID} -> 00-1c-23-12-3a-73
expand: %{Calling-Station-ID} -> 00-1c-23-12-3a-73
+++[request] returns notfound
++- if ((Service-Type == 'Call-Check') || (User-Name =~ /^%{Calling-Station-ID}$/i)) returns notfound
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "00-1c-23-12-3a-73", 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 00-1c-23-12-3a-73 at line 3
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
++[pap] returns updated
Found Auth-Type = PAP
+- entering group PAP {...}
[pap] login attempt with password "00-1c-23-12-3a-73"
[pap] Using clear text password "00-1c-23-12-3a-73"
[pap] User authenticated successfully
++[pap] returns ok
Login OK: [00-1c-23-12-3a-73/00-1c-23-12-3a-73] (from client Hib_C6K port 515 cli 00-1c-23-12-3a-73)
+- entering group post-auth {...}
++[exec] returns noop
Sending Access-Accept of id 85 to 172.16.0.1 port 1024
Tunnel-Type:0 = VLAN
Tunnel-Medium-Type:0 = IEEE-802
Tunnel-Private-Group-Id:0 = "237"
Finished request 1.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 1 ID 85 with timestamp +16
Ready to process requests.
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