can't get simultaneous login to work Part 1
J Brandon Polley
POLLEYJB at nsac.ca
Fri Feb 19 21:04:00 CET 2010
Some background on what we have here:
- We have a Cisco wireless infrastructure (WLC 4400, a bunch of 1131s) and clients running SecureW2 supplicant. We want to authenticate and
authorize them against our directory services.
The 802.1x/EAP-TTLS/PAP method was suggested and we went with it.
- user's directory is eDirectory and accessed via Novell LDAP v3 interface. (authentication is working and SSL secured [SLDAP])
- Radius server is on separate hardware, OS is Novell SUSE Enterprise Linux (SLES) 10 SP3 and is NOT running eDirectory.
- FreeRADIUS 2.1.8 downloaded from FreeRADIUS.org and built from scratch with -eDIR options (compiled perfectly into RPMs and installed into
OS perfectly).
- Config files and debug output to follow the base email below.
- I have my NAS listed in the huntgroups.config
- I set correct type of NAS in the file "/etc/raddb/clients.config". I set it to "cisco" (We assume this directs "checkrad.pl" to use that
method)
- I set the username to SNMP, password is the community string in the clients config
- I have accounting turned on my NAS and we see accounting messages coming in when sessions expire.(see debug output below)
We can't get simultaneous login to work. We are trying to restrict simultaneous use to allow only one user to be logged at once.
(1)
Some things that we have picked up on are that the checkrad.pl perl script is not able to access the Cisco 4400 wireless controller's data
properly
to access the session information. I think this may be partly us not knowing how a session is considered unique and two how the cisco section
in the script polls
the MIB for session data. We know based on the new Cisco Airespace MIB that sessions are listed by MAC address but from there not sure how to
map
that onto what FreeRADIUS is looking for. SNMP access to the device is working, we can see the request on the line using Wireshark and
snmpwalk returns system data.
Perhaps it has something to do with adding Simultaneous-use parameter to
the check items first line. I am not sure where to find "check items".
Our usernames are coming from eDirectory and we have followed the Novell documentation on what to do there. The data is then presented to
FreeRADIUS via LDAP.
When I go into Radius users using Novell iManager I can see some options for "check items" but none are set.
(2)
Another oddity is radwho. When the user logs in the first time they show up in radwho. When I have someone login again using the same
username but on a different laptop the newest login
overwrites the entry in radwho instead of adding to it. Should that not be a separate unique session and thus two should appear in the
listing?
I have read the documentation:
- I installed the mrtg package (to allow the chekrad.pl to talk SNMP natively and that does work just not polling the right data we think)
- I put this line in the "/raddb/users.config" file at the top of the file (the first non commented line):
DEFAULT Simultaneous-Use := 1
Fall-Through = 1
We are not doing groups, everyone in our directory is allowed on the wireless so we used "DEFAULT".
Here is my debug output when I start radius:
radius:~ # radiusd -X
FreeRADIUS Version 2.1.8, for host i686-suse-linux-gnu, built on Jan 23 2010 at 01:51:06
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/clients.conf
including files in directory /etc/raddb/modules/
including configuration file /etc/raddb/modules/cui
including configuration file /etc/raddb/modules/pam
including configuration file /etc/raddb/modules/pap
including configuration file /etc/raddb/modules/otp
including configuration file /etc/raddb/modules/chap
including configuration file /etc/raddb/modules/echo
including configuration file /etc/raddb/modules/exec
including configuration file /etc/raddb/modules/expr
including configuration file /etc/raddb/modules/ldap
including configuration file /etc/raddb/modules/krb5
including configuration file /etc/raddb/modules/perl
including configuration file /etc/raddb/modules/unix
including configuration file /etc/raddb/modules/inner-eap
including configuration file /etc/raddb/modules/radutmp
including configuration file /etc/raddb/modules/counter
including configuration file /etc/raddb/modules/acct_unique
including configuration file /etc/raddb/modules/files
including configuration file /etc/raddb/modules/realm
including configuration file /etc/raddb/modules/wimax
including configuration file /etc/raddb/modules/mac2vlan
including configuration file /etc/raddb/modules/linelog
including configuration file /etc/raddb/modules/sqlcounter_expire_on_login
including configuration file /etc/raddb/modules/detail.example.com
including configuration file /etc/raddb/modules/checkval
including configuration file /etc/raddb/modules/ntlm_auth
including configuration file /etc/raddb/modules/logintime
including configuration file /etc/raddb/modules/sql_log
including configuration file /etc/raddb/modules/sradutmp
including configuration file /etc/raddb/modules/always
including configuration file /etc/raddb/modules/attr_rewrite
including configuration file /etc/raddb/modules/detail
including configuration file /etc/raddb/modules/digest
including configuration file /etc/raddb/modules/ippool
including configuration file /etc/raddb/modules/mac2ip
including configuration file /etc/raddb/modules/mschap
including configuration file /etc/raddb/modules/smbpasswd
including configuration file /etc/raddb/modules/passwd
including configuration file /etc/raddb/modules/policy
including configuration file /etc/raddb/modules/smsotp
including configuration file /etc/raddb/modules/etc_group
including configuration file /etc/raddb/modules/preprocess
including configuration file /etc/raddb/modules/attr_filter
including configuration file /etc/raddb/modules/detail.log
including configuration file /etc/raddb/modules/expiration
including configuration file /etc/raddb/eap.conf
including configuration file /etc/raddb/policy.conf
including files in directory /etc/raddb/sites-enabled/
including configuration file /etc/raddb/sites-enabled/default
including configuration file /etc/raddb/sites-enabled/inner-tunnel
including configuration file /etc/raddb/sites-enabled/control-socket
main {
user = "radiusd"
group = "radiusd"
allow_core_dumps = no
}
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
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 ####
radiusd: #### Loading Clients ####
client 172.16.33.2 {
require_message_authenticator = no
secret = 11111
shortname = "wlc-nsac-exteng-4404-6"
nastype = "cisco"
}
client 172.16.33.4 {
require_message_authenticator = no
secret = "1111"
shortname = "wlc-nsac-exteng-4404-7"
nastype = "cisco"
}
client 172.16.19.130 {
require_message_authenticator = no
secret = "1111"
nastype = "other"
}
client 172.16.3.107 {
require_message_authenticator = no
secret = "1111"
nastype = "other"
}
client 172.16.19.132 {
require_message_authenticator = no
secret = "1111"
nastype = "other"
}
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 = 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
pem_file_type = yes
private_key_file = "/etc/raddb/certs/server.pem"
certificate_file = "/etc/raddb/certs/server.pem"
CA_file = "/etc/raddb/certs/ca.pem"
private_key_password = "whatever"
dh_file = "/etc/raddb/certs/dh"
random_file = "/etc/raddb/certs/random"
fragment_size = 1024
include_length = yes
check_crl = no
cipher_list = "DEFAULT"
make_cert_command = "/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 = yes
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_ldap
Module: Instantiating ldap
ldap {
server = "172.16.3.52"
port = 636
password = "111111"
identity = "cn=THELDAPBIND,ou=USERS,o=NSAC"
net_timeout = 1
timeout = 4
timelimit = 3
tls_mode = no
start_tls = no
tls_require_cert = "allow"
tls {
start_tls = no
cacertfile = "/etc/raddb/certs/cert.b64"
require_cert = "demand"
}
basedn = "o=NSAC"
filter = "(&(uid=%{%{Stripped-User-Name}:-%{User-Name}})(!(THELDAPBIND=1)))"
base_filter = "(objectclass=radiusprofile)"
password_attribute = "11111"
auto_header = no
access_attr_used_for_allow = yes
groupname_attribute = "cn"
groupmembership_filter =
"(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"
dictionary_mapping = "/etc/raddb/ldap.attrmap"
ldap_debug = 0
ldap_connections_number = 5
compare_check_items = no
do_xlat = yes
edir_account_policy_check = 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: 0x8189198
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 {
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.
part 2 has more output. I couldn't fit everyone in one email
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