Restricting certain users access to certain NAS devices
Whitmarsh Mark (Leeds Teaching Hospitals NHS Trust)
mark.whitmarsh at nhs.net
Thu May 27 15:43:29 CEST 2010
Sorry, I should have mentioned I already tried man rlm_passwd and couldn't figure it out.
I've been through it again and have made the following changes:
1. created a file /etc/raddb/path_group
path_group:user1,user2,user3,user4,user5
2. Added the following to /etc/raddb/dictionary
ATTRIBUTE User_Group_Name 3003 string
3. Added to modules/passwd
filename = /etc/raddb/path_group
hashsize = 20
allowmultiplekeys = yes
format = "~User_Group_Name:*,User-Name"
4. Also edited modules/etc_group because I couldn't make out which file to put these items in
passwd etc_group {
filename = /etc/raddb/path_group
format = "~User_Group_Name:*,User-Name"
hashsize = 50
ignorenislike = no
allowmultiplekeys = yes
delimiter = ":"
}
5. Inserted this into the post-auth section of sites-enabled/default
if ("%{User_Group_Name}" == path_group) {
update reply {
Reply-Message := "You are not allowed here"
}
reject
}
Debug output is:
FreeRADIUS Version 2.1.6, for host i686-pc-linux-gnu, built on Nov 20 2009 at 09:43:24
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/clients.conf
including files in directory /etc/raddb/modules/
including configuration file /etc/raddb/modules/inner-eap
including configuration file /etc/raddb/modules/pap
including configuration file /etc/raddb/modules/ippool
including configuration file /etc/raddb/modules/expiration
including configuration file /etc/raddb/modules/files
including configuration file /etc/raddb/modules/attr_rewrite
including configuration file /etc/raddb/modules/detail.example.com
including configuration file /etc/raddb/modules/exec
including configuration file /etc/raddb/modules/etc_group
including configuration file /etc/raddb/modules/preprocess
including configuration file /etc/raddb/modules/ntlm_auth
including configuration file /etc/raddb/modules/detail.log
including configuration file /etc/raddb/modules/passwd
including configuration file /etc/raddb/modules/linelog
including configuration file /etc/raddb/modules/radutmp
including configuration file /etc/raddb/modules/smsotp
including configuration file /etc/raddb/modules/mac2ip
including configuration file /etc/raddb/modules/logintime
including configuration file /etc/raddb/modules/unix
including configuration file /etc/raddb/modules/attr_filter
including configuration file /etc/raddb/modules/ldap
including configuration file /etc/raddb/modules/counter
including configuration file /etc/raddb/modules/mac2vlan
including configuration file /etc/raddb/modules/sqlcounter_expire_on_login
including configuration file /etc/raddb/modules/always
including configuration file /etc/raddb/modules/expr
including configuration file /etc/raddb/modules/sradutmp
including configuration file /etc/raddb/modules/policy
including configuration file /etc/raddb/modules/wimax
including configuration file /etc/raddb/modules/sql_log
including configuration file /etc/raddb/modules/realm
including configuration file /etc/raddb/modules/echo
including configuration file /etc/raddb/modules/acct_unique
including configuration file /etc/raddb/modules/otp
including configuration file /etc/raddb/modules/mschap
including configuration file /etc/raddb/modules/krb5
including configuration file /etc/raddb/modules/smbpasswd
including configuration file /etc/raddb/modules/checkval
including configuration file /etc/raddb/modules/digest
including configuration file /etc/raddb/modules/pam
including configuration file /etc/raddb/modules/chap
including configuration file /etc/raddb/modules/perl
including configuration file /etc/raddb/modules/detail
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/control-socket
including configuration file /etc/raddb/sites-enabled/inner-tunnel
including configuration file /etc/raddb/sites-enabled/default
group = radiusd
user = radiusd
including dictionary file /etc/raddb/dictionary
main {
prefix = "/usr"
localstatedir = "/var"
logdir = "/home/radlogs"
libdir = "/usr/lib/freeradius"
radacctdir = "/home/radlogs/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 = yes
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 = "**********"
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
require_message_authenticator = no
secret = "********"
nastype = "other"
}
client xxx.xxx.xxx.xx {
require_message_authenticator = no
secret = "********"
shortname = "self"
}
client xxx.xxx.x.x/16 {
require_message_authenticator = no
secret = "xxxxxxxx"
shortname = "Anyone"
nastype = "pc"
}
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 = "/home/radlogs/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 = "/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 = 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: Instantiating ntlm_auth
exec ntlm_auth {
wait = yes
program = "/usr/bin/ntlm_auth --request-nt-key --domain=******* --username=%{mschap:User-Name} --password=%{User-Password}"
input_pairs = "request"
shell_escape = yes
}
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 = "/home/radlogs/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 {
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 = "/home/radlogs/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
Module: Linked to module rlm_always
Module: Instantiating reject
always reject {
rcode = "reject"
simulcount = 0
mpp = no
}
} # modules
} # server
radiusd: #### Opening IP addresses and Ports ####
listen {
type = "auth"
ipaddr = xxx.xxx.xxx.xx
port = 0
}
listen {
type = "acct"
ipaddr = *
port = 0
}
listen {
type = "control"
listen {
socket = "/var/run/radiusd/radiusd.sock"
}
}
Listening on authentication address xxx.xxx.xxx.xx port 1812
Listening on accounting address * port 1813
Listening on command file /var/run/radiusd/radiusd.sock
Listening on proxy address xxx.xxx.xxx.xx port 1814
Ready to process requests.
rad_recv: Access-Request packet from host xxx.xxx.xxx.xx port 50600, id=177, length=60
User-Name = "********"
User-Password = "********"
NAS-IP-Address = 127.0.0.2
NAS-Port = 0
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "********", 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 ******** at line 7
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
[pap] WARNING! No "known good" password found for the user. Authentication may fail because of this.
++[pap] returns noop
Found Auth-Type = ntlm_auth
+- entering group authenticate {...}
[ntlm_auth] expand: --username=%{mschap:User-Name} -> --username=********
[ntlm_auth] expand: --password=%{User-Password} -> --password=********
Exec-Program output: NT_STATUS_OK: Success (0x0)
Exec-Program-Wait: plaintext: NT_STATUS_OK: Success (0x0)
Exec-Program: returned: 0
++[ntlm_auth] returns ok
Login OK: [********] (from client self port 0)
+- entering group post-auth {...}
++[exec] returns noop
++? if ("%{User_Group_Name}" == path_group)
expand: %{User_Group_Name} ->
? Evaluating ("%{User_Group_Name}" == path_group) -> FALSE
++? if ("%{User_Group_Name}" == path_group) -> FALSE
Sending Access-Accept of id 177 to xxx.xxx.xxx.xx port 50600
Finished request 0.
Going to the next request
Waking up in 4.9 seconds.
The User_Group_Name attribute doesn't seem to get created/populated so when I check it in post-auth it is null.
What have I missed?
Thanks,
Mark Whitmarsh.
________________________________________
From: freeradius-users-bounces+mark.whitmarsh=nhs.net at lists.freeradius.org [freeradius-users-bounces+mark.whitmarsh=nhs.net at lists.freeradius.org] On Behalf Of Alan DeKok [aland at deployingradius.com]
Sent: 26 May 2010 18:53
To: FreeRadius users mailing list
Subject: Re: Restricting certain users access to certain NAS devices
Whitmarsh Mark (Leeds Teaching Hospitals NHS Trust) wrote:
> The idea is that superusers are allowed to login to any of the 200 network devices whilst users are only allowed to login to a subset of say 50 devices.
> It's straightforward enough for the superusers and works fine but I'm stumped on how to handle the others. I have tested the following OK in sites-enabled/default:
Groups. See "man rlm_passwd". Create RADIUS-specific groups, and
check them. Users can be in a group, *or* NASes.
Alan DeKok.
-
List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
********************************************************************************************************************
This message may contain confidential information. If you are not the intended recipient please inform the
sender that you have received the message in error before deleting it.
Please do not disclose, copy or distribute information in this e-mail or take any action in reliance on its contents:
to do so is strictly prohibited and may be unlawful.
Thank you for your co-operation.
NHSmail is the secure email and directory service available for all NHS staff in England and Scotland
NHSmail is approved for exchanging patient data and other sensitive information with NHSmail and GSI recipients
NHSmail provides an email address for your career in the NHS and can be accessed anywhere
For more information and to find out how you can switch, visit www.connectingforhealth.nhs.uk/nhsmail
********************************************************************************************************************
More information about the Freeradius-Users
mailing list