Assigning IP address from RADIUS to Cisco PPTP users
up at 3.am
up at 3.am
Tue May 26 21:48:49 CEST 2009
On Tue, 26 May 2009, Ivan Kalik wrote:
>> I've used Livingston and Cistron radiusd's in the past with dialup ppp
>> users and Cisco/Lucent NASes and have been able to do this with no
>> problems.
>>
>> Users are currently authenticating fine and getting assigned IPs from the
>> IP pool as defined in the Cisco NAS. However, I'd like to have a few,
>> select users assigned static IPs from outside that pool, but the Cisco
>> (2811) is simply ignoring the raddb/users file entry for that user and
>> assigning an IP from the pool on the NAS.
>>
>> Here is my Cisco config::
>> --------------------
>> aaa new-model
>> aaa authentication login default local group radius
>> aaa authentication ppp default group radius local
>> aaa authorization exec default local
>> aaa authorization network default if-authenticated
>> aaa session-id common
>>
>> vpdn-group 1
>> accept-dialin
>> protocol pptp
>> virtual-template 1
>>
>> interface Loopback0
>> ip address 99.99.99.99 255.255.255.255
>> ip nat inside
>> ip virtual-reassembly
>>
>> interface Virtual-Template1
>> ip unnumbered FastEthernet0/0
>> ip policy route-map VPN-Client
>> peer match aaa-pools
>> peer default ip address pool vpnpool
>> no keepalive
>> ppp encrypt mppe auto
>> ppp authentication pap chap ms-chap ms-chap-v2
>> !
>> ip local pool vpnpool 172.16.30.2 172.16.30.254
>> ---------
>> Here is the raddb/users file entry:
>> ---------
>> testuser Service-Type == Framed-User
>> Framed-Protocol == PPP,
>> Framed-IP-Address = 172.16.1.2,
>> Framed-IP-Netmask = 255.255.255.255,
>> Framed-Compression = Van-Jacobson-TCP-IP
>>
>> DEFAULT Framed-Protocol == PPP
>> Framed-Protocol = PPP,
>> Framed-Compression = Van-Jacobson-TCP-IP
>> --------------
>> The DEFAULT entry allows users in /etc/passwd to authenticate fine, but
>> "testuser" still gets an IP from the NAS pool instead of the one above..
>> Any pointers appreciated!
>
> http://wiki.freeradius.org/index.php/FAQ#It_still_doesn.27t_work.21
>
> Post the debug of the authentication attempt.
>
> Ivan Kalik
> Kalik Informatika ISP
Hi Ivan:
Here it is...I including startup stuff as well:
FreeRADIUS Version 2.0.4, for host i686-pc-linux-gnu, built on Jun 4 2008
at 11:29:00
Copyright (C) 1999-2008 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.
Starting - reading configuration files ...
including configuration file /usr/etc/raddb/radiusd.conf
including configuration file /usr/etc/raddb/clients.conf
including configuration file /usr/etc/raddb/eap.conf
including configuration file /usr/etc/raddb/policy.conf
including files in directory /usr/etc/raddb/sites-enabled/
including configuration file /usr/etc/raddb/sites-enabled/inner-tunnel
including configuration file /usr/etc/raddb/sites-enabled/default
including dictionary file /usr/etc/raddb/dictionary
main {
prefix = "/usr"
localstatedir = "/usr/var"
logdir = "/var/log/radius"
libdir = "/usr/lib"
radacctdir = "/var/log/radius/radacct"
hostname_lookups = no
max_request_time = 30
cleanup_delay = 5
max_requests = 1024
allow_core_dumps = no
pidfile = "/usr/var/run/radiusd/radiusd.pid"
user = "root"
group = "wheel"
checkrad = "/usr/sbin/checkrad"
debug_level = 0
proxy_requests = no
security {
max_attributes = 200
reject_delay = 1
status_server = yes
}
}
client localhost {
ipaddr = 127.0.0.1
require_message_authenticator = no
secret = "some_secret"
nastype = "other"
}
client 216.1.12.66 {
require_message_authenticator = no
secret = "another_secret"
shortname = "cisco_pptp"
nastype = "cisco"
}
client 192.168.3.36 {
require_message_authenticator = no
secret = "yet_another"
shortname = "s036"
nastype = "other"
}
client 216.1.12.74 {
require_message_authenticator = no
secret = "one_more_secret"
shortname = "utopia"
nastype = "other"
}
radiusd: #### Loading Realms and Home Servers ####
radiusd: #### Instantiating modules ####
instantiate {
Module: Linked to module rlm_exec
Module: Instantiating exec
exec {
wait = yes
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
}
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/etc/raddb/certs/server.pem"
certificate_file = "/usr/etc/raddb/certs/server.pem"
CA_file = "/usr/etc/raddb/certs/ca.pem"
private_key_password = "whatever"
dh_file = "/usr/etc/raddb/certs/dh"
random_file = "/usr/etc/raddb/certs/random"
fragment_size = 1024
include_length = yes
check_crl = no
cipher_list = "DEFAULT"
make_cert_command = "/usr/etc/raddb/certs/bootstrap"
}
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"
}
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/etc/raddb/users"
acctusersfile = "/usr/etc/raddb/acct_users"
preproxy_usersfile = "/usr/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/etc/raddb/attrs.access_reject"
key = "%{User-Name}"
}
}
}
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/etc/raddb/huntgroups"
hints = "/usr/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/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
}
}
radiusd: #### Opening IP addresses and Ports ####
listen {
type = "auth"
ipaddr = *
port = 1812
}
listen {
type = "acct"
ipaddr = *
port = 0
}
Listening on authentication address * port 1812
Listening on accounting address * port 1813
Ready to process requests.
Framed-Protocol = PPP
User-Name = "testuser"
User-Password = "some_password"
NAS-Port-Type = Virtual
NAS-Port = 62
NAS-Port-Id = "Uniq-Sess-ID62"
Service-Type = Framed-User
NAS-IP-Address = 216.1.12.66
+- entering group authorize
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
rlm_realm: No '@' in User-Name = "testuser", looking up realm NULL
rlm_realm: No such realm "NULL"
++[suffix] returns noop
rlm_eap: No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns updated
users: Matched entry testuser at line 172
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
++[pap] returns updated
rad_check_password: Found Auth-Type
auth: type "PAP"
+- entering group PAP
rlm_pap: login attempt with password "some_password"
rlm_pap: Using CRYPT encryption.
rlm_pap: User authenticated successfully
++[pap] returns ok
Login OK: [testuser/some_password] (from client cisco_pptp port 62)
+- entering group post-auth
++[exec] returns noop
Framed-Protocol == PPP
Framed-IP-Address = 172.16.1.2
Framed-IP-Netmask = 255.255.255.255
Framed-Compression = Van-Jacobson-TCP-IP
Finished request 0.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 0 ID 205 with timestamp +17
Ready to process requests.
-----------
I'm not using realms, so I'm assuming that realms error is meaningless?
James Smallacombe PlantageNet, Inc. CEO and Janitor
up at 3.am http://3.am
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