Configuring unix password/group lookup on FreeBSD

16 Jun 2006

      Hello all,

      I am trying to get a basic freeradius 1.0.4 server configured to 
authenticate users from the local unix password/group databases on a 
FreeBSD 6.1 box. The end result is to get ipsec-tools to do user 
authentication for some development and testing. I have pared down my 
radius.conf file ( probably too much ) to get rid of the modules I 
didn't think I needed.

The error I am getting is as follows ...

rad_recv: Access-Request packet from host 127.0.0.1:51330, id=102, length=71
         User-Name = "vpntest"
         User-Password = "xxxxxxxxx"
         NAS-IP-Address = 10.22.200.1
         NAS-Port = 0
         NAS-Port-Type = Virtual
         Service-Type = Framed-User
   Processing the authorize section of radiusd.conf
modcall: entering group authorize for request 0
radius_xlat:  '/var/log/radacct//detail'
rlm_detail: %A/%{Client-IP-Address}/detail expands to 
/var/log/radacct//detail
   modcall[authorize]: module "auth_log" returns ok for request 0
modcall: group authorize returns ok for request 0
auth: No authenticate method (Auth-Type) configuration found for the 
request: Rejecting the user
auth: Failed to validate the user.
Delaying request 0 for 1 seconds
Finished request 0
Going to the next request
--- Walking the entire request list ---
Waking up in 1 seconds...
--- Walking the entire request list ---
Waking up in 1 seconds...
--- Walking the entire request list ---
Sending Access-Reject of id 102 to 127.0.0.1:51330
Waking up in 4 seconds...

... I guess I just don't understand how the Auth-Type is selected which 
I assume needs to be set to 'unix'? I'm sure its quite obvious by now 
that I am not that familiar with configuring radius servers for 
authentication. I have attached my radius.conf file in the hope that 
some kind sole is willing to educate me in this regard.

Thanks in advance,

-Matthew

##
## radiusd.conf	-- FreeRADIUS server configuration file.
##
##	http://www.freeradius.org/
##	$Id: radiusd.conf.in,v 1.188.2.4 2005/06/11 22:20:40 nbk Exp $
##

#  	The location of other config files and
#  	logfiles are declared in this file
#
#  	Also general configuration for modules can be done
#  	in this file, it is exported through the API to
#  	modules that ask for it.
#
#	The configuration variables defined here are of the form ${foo}
#	They are local to this file, and do not change from request to
#	request.
#
#	The per-request variables are of the form %{Attribute-Name}, and
#	are taken from the values of the attribute in the incoming
#	request.  See 'doc/variables.txt' for more information.

prefix = /usr/local
exec_prefix = ${prefix}
sysconfdir = ${prefix}/etc
localstatedir = /var
sbindir = ${exec_prefix}/sbin
logdir = /var/log
raddbdir = ${sysconfdir}/raddb
radacctdir = ${logdir}/radacct

#  Location of config and logfiles.
confdir = ${raddbdir}
run_dir = ${localstatedir}/run/radiusd

#
#  The logging messages for the server are appended to the
#  tail of this file.
#
log_file = ${logdir}/radius.log

#
# libdir: Where to find the rlm_* modules.
#
#   This should be automatically set at configuration time.
#
#   If the server builds and installs, but fails at execution time
#   with an 'undefined symbol' error, then you can use the libdir
#   directive to work around the problem.
#
#   The cause is usually that a library has been installed on your
#   system in a place where the dynamic linker CANNOT find it.  When
#   executing as root (or another user), your personal environment MAY
#   be set up to allow the dynamic linker to find the library.  When
#   executing as a daemon, FreeRADIUS MAY NOT have the same
#   personalized configuration.
#
#   To work around the problem, find out which library contains that symbol,
#   and add the directory containing that library to the end of 'libdir',
#   with a colon separating the directory names.  NO spaces are allowed.
#
#   e.g. libdir = /usr/local/lib:/opt/package/lib
#
#   You can also try setting the LD_LIBRARY_PATH environment variable
#   in a script which starts the server.
#
#   If that does not work, then you can re-configure and re-build the
#   server to NOT use shared libraries, via:
#
#	./configure --disable-shared
#	make
#	make install
#
libdir = ${exec_prefix}/lib

#  pidfile: Where to place the PID of the RADIUS server.
#
#  The server may be signalled while it's running by using this
#  file.
#
#  This file is written when ONLY running in daemon mode.
#
#  e.g.:  kill -HUP `cat /var/run/radiusd/radiusd.pid`
#
pidfile = ${run_dir}/radiusd.pid

# user/group: The name (or #number) of the user/group to run radiusd as.
#
#   If these are commented out, the server will run as the user/group
#   that started it.  In order to change to a different user/group, you
#   MUST be root ( or have root privleges ) to start the server.
#
#   We STRONGLY recommend that you run the server with as few permissions
#   as possible.  That is, if you're not using shadow passwords, the
#   user and group items below should be set to 'nobody'.
#
#    On SCO (ODT 3) use "user = nouser" and "group = nogroup".
#
#  NOTE that some kernels refuse to setgid(group) when the value of
#  (unsigned)group is above 60000; don't use group nobody on these systems!
#
#  On systems with shadow passwords, you might have to set 'group = shadow'
#  for the server to be able to read the shadow password file.  If you can
#  authenticate users while in debug mode, but not in daemon mode, it may be
#  that the debugging mode server is running as a user that can read the
#  shadow info, and the user listed below can not.
#
#user = nobody
#group = nobody

#  max_request_time: The maximum time (in seconds) to handle a request.
#
#  Requests which take more time than this to process may be killed, and
#  a REJECT message is returned.
#
#  WARNING: If you notice that requests take a long time to be handled,
#  then this MAY INDICATE a bug in the server, in one of the modules
#  used to handle a request, OR in your local configuration.
#
#  This problem is most often seen when using an SQL database.  If it takes
#  more than a second or two to receive an answer from the SQL database,
#  then it probably means that you haven't indexed the database.  See your
#  SQL server documentation for more information.
#
#  Useful range of values: 5 to 120
#
max_request_time = 30

#  delete_blocked_requests: If the request takes MORE THAN 'max_request_time'
#  to be handled, then maybe the server should delete it.
#
#  If you're running in threaded, or thread pool mode, this setting
#  should probably be 'no'.  Setting it to 'yes' when using a threaded
#  server MAY cause the server to crash!
#
delete_blocked_requests = no

#  cleanup_delay: The time to wait (in seconds) before cleaning up
#  a reply which was sent to the NAS.
#
#  The RADIUS request is normally cached internally for a short period
#  of time, after the reply is sent to the NAS.  The reply packet may be
#  lost in the network, and the NAS will not see it.  The NAS will then
#  re-send the request, and the server will respond quickly with the
#  cached reply.
#
#  If this value is set too low, then duplicate requests from the NAS
#  MAY NOT be detected, and will instead be handled as seperate requests.
#
#  If this value is set too high, then the server will cache too many
#  requests, and some new requests may get blocked.  (See 'max_requests'.)
#
#  Useful range of values: 2 to 10
#
cleanup_delay = 5

#  max_requests: The maximum number of requests which the server keeps
#  track of.  This should be 256 multiplied by the number of clients.
#  e.g. With 4 clients, this number should be 1024.
#
#  If this number is too low, then when the server becomes busy,
#  it will not respond to any new requests, until the 'cleanup_delay'
#  time has passed, and it has removed the old requests.
#
#  If this number is set too high, then the server will use a bit more
#  memory for no real benefit.
#
#  If you aren't sure what it should be set to, it's better to set it
#  too high than too low.  Setting it to 1000 per client is probably
#  the highest it should be.
#
#  Useful range of values: 256 to infinity
#
max_requests = 1024

#  bind_address:  Make the server listen on a particular IP address, and
#  send replies out from that address.  This directive is most useful
#  for machines with multiple IP addresses on one interface.
#
#  It can either contain "*", or an IP address, or a fully qualified
#  Internet domain name.  The default is "*"
#
#  As of 1.0, you can also use the "listen" directive.  See below for
#  more information.
#
bind_address = *

#  port: Allows you to bind FreeRADIUS to a specific port.
#
#  The default port that most NAS boxes use is 1645, which is historical.
#  RFC 2138 defines 1812 to be the new port.  Many new servers and
#  NAS boxes use 1812, which can create interoperability problems.
#
#  The port is defined here to be 0 so that the server will pick up
#  the machine's local configuration for the radius port, as defined
#  in /etc/services.
#
#  If you want to use the default RADIUS port as defined on your server,
#  (usually through 'grep radius /etc/services') set this to 0 (zero).
#
#  A port given on the command-line via '-p' over-rides this one.
#
#  As of 1.0, you can also use the "listen" directive.  See below for
#  more information.
#
port = 0

#
#  By default, the server uses "bind_address" to listen to all IP's
#  on a machine, or just one IP.  The "port" configuration is used
#  to select the authentication port used when listening on those
#  addresses.
#
#  If you want the server to listen on additional addresses, you can
#  use the "listen" section.  A sample section (commented out) is included
#  below.  This "listen" section duplicates the functionality of the
#  "bind_address" and "port" configuration entries, but it only listens
#  for authentication packets.
#
#  If you comment out the "bind_address" and "port" configuration entries,
#  then it becomes possible to make the server accept only accounting,
#  or authentication packets.  Previously, it always listened for both
#  types of packets, and it was impossible to make it listen for only
#  one type of packet.
#
#listen {
	#  IP address on which to listen.
	#  Allowed values are:
	#	dotted quad (1.2.3.4)
	#       hostname    (radius.example.com)
	#       wildcard    (*)
#	ipaddr = *

	#  Port on which to listen.
	#  Allowed values are:
	#	integer port number (1812)
	#	0 means "use /etc/services for the proper port"
#	port = 0

	#  Type of packets to listen for.
	#  Allowed values are:
	#	auth	listen for authentication packets
	#	acct	listen for accounting packets
	#
#	type = auth
#}

#  hostname_lookups: Log the names of clients or just their IP addresses
#  e.g., www.freeradius.org (on) or 206.47.27.232 (off).
#
#  The default is 'off' because it would be overall better for the net
#  if people had to knowingly turn this feature on, since enabling it
#  means that each client request will result in AT LEAST one lookup
#  request to the nameserver.   Enabling hostname_lookups will also
#  mean that your server may stop randomly for 30 seconds from time
#  to time, if the DNS requests take too long.
#
#  Turning hostname lookups off also means that the server won't block
#  for 30 seconds, if it sees an IP address which has no name associated
#  with it.
#
#  allowed values: {no, yes}
#
hostname_lookups = no

#  Core dumps are a bad thing.  This should only be set to 'yes'
#  if you're debugging a problem with the server.
#
#  allowed values: {no, yes}
#
allow_core_dumps = no

#  Regular expressions
#
#  These items are set at configure time.  If they're set to "yes",
#  then setting them to "no" turns off regular expression support.
#
#  If they're set to "no" at configure time, then setting them to "yes"
#  WILL NOT WORK.  It will give you an error.
#
regular_expressions	= yes
extended_expressions	= yes

#  Log the full User-Name attribute, as it was found in the request.
#
# allowed values: {no, yes}
#
log_stripped_names = no

#  Log authentication requests to the log file.
#
#  allowed values: {no, yes}
#
log_auth = no

#  Log passwords with the authentication requests.
#  log_auth_badpass  - logs password if it's rejected
#  log_auth_goodpass - logs password if it's correct
#
#  allowed values: {no, yes}
#
log_auth_badpass = no
log_auth_goodpass = no

# usercollide:  Turn "username collision" code on and off.  See the
# "doc/duplicate-users" file
#
#  WARNING
#  !!!!!!!  Setting this to "yes" may result in the server behaving
#  !!!!!!!  strangely.  The "username collision" code will ONLY work
#  !!!!!!!  with clear-text passwords.  Even then, it may not do what
#  !!!!!!!  you want, or what you expect.
#  !!!!!!!
#  !!!!!!!  We STRONGLY RECOMMEND that you do not use this feature,
#  !!!!!!!  and that you find another way of acheiving the same goal.
#  !!!!!!!
#  !!!!!!!  e,g. module fail-over.  See 'doc/configurable_failover'
#  WARNING
#
usercollide = no

# lower_user / lower_pass:  
# Lower case the username/password "before" or "after"
# attempting to authenticate.  
#
#  If "before", the server will first modify the request and then try
#  to auth the user.  If "after", the server will first auth using the
#  values provided by the user.  If that fails it will reprocess the
#  request after modifying it as you specify below.
#
#  This is as close as we can get to case insensitivity.  It is the
#  admin's job to ensure that the username on the auth db side is
#  *also* lowercase to make this work
#
# Default is 'no' (don't lowercase values)
# Valid values = "before" / "after" / "no"
#
lower_user = no
lower_pass = no

# nospace_user / nospace_pass:
#
#  Some users like to enter spaces in their username or password
#  incorrectly.  To save yourself the tech support call, you can
#  eliminate those spaces here:
#
# Default is 'no' (don't remove spaces)
# Valid values = "before" / "after" / "no" (explanation above)
#
nospace_user = no
nospace_pass = no

#  The program to execute to do concurrency checks.
checkrad = ${sbindir}/checkrad

# SECURITY CONFIGURATION
#
#  There may be multiple methods of attacking on the server.  This
#  section holds the configuration items which minimize the impact
#  of those attacks
#
security {
	#
	#  max_attributes: The maximum number of attributes
	#  permitted in a RADIUS packet.  Packets which have MORE
	#  than this number of attributes in them will be dropped.
	#
	#  If this number is set too low, then no RADIUS packets
	#  will be accepted.
	#
	#  If this number is set too high, then an attacker may be
	#  able to send a small number of packets which will cause
	#  the server to use all available memory on the machine.
	#
	#  Setting this number to 0 means "allow any number of attributes"
	max_attributes = 200

	#
	#  delayed_reject: When sending an Access-Reject, it can be
	#  delayed for a few seconds.  This may help slow down a DoS
	#  attack.  It also helps to slow down people trying to brute-force
	#  crack a users password.
	#
	#  Setting this number to 0 means "send rejects immediately"
	#
	#  If this number is set higher than 'cleanup_delay', then the
	#  rejects will be sent at 'cleanup_delay' time, when the request
	#  is deleted from the internal cache of requests.
	#
	#  Useful ranges: 1 to 5
	reject_delay = 1

	#
	#  status_server: Whether or not the server will respond
	#  to Status-Server requests.
	#
	#  Normally this should be set to "no", because they're useless.
	#  See: http://www.freeradius.org/rfc/rfc2865.html#Keep-Alives
	#
	#  However, certain NAS boxes may require them.	
	#
	#  When sent a Status-Server message, the server responds with
	#  an Access-Accept packet, containing a Reply-Message attribute,
	#  which is a string describing how long the server has been
	#  running.
	#
	status_server = no
}

# PROXY CONFIGURATION
#
#  proxy_requests: Turns proxying of RADIUS requests on or off.
#
#  The server has proxying turned on by default.  If your system is NOT
#  set up to proxy requests to another server, then you can turn proxying
#  off here.  This will save a small amount of resources on the server.
#
#  If you have proxying turned off, and your configuration files say
#  to proxy a request, then an error message will be logged.
#
#  To disable proxying, change the "yes" to "no", and comment the
#  $INCLUDE line.
#
#  allowed values: {no, yes}
#
proxy_requests  = no

# CLIENTS CONFIGURATION
#
#  Client configuration is defined in "clients.conf".  
#

#  The 'clients.conf' file contains all of the information from the old
#  'clients' and 'naslist' configuration files.  We recommend that you
#  do NOT use 'client's or 'naslist', although they are still
#  supported.
#
#  Anything listed in 'clients.conf' will take precedence over the
#  information from the old-style configuration files.
#
$INCLUDE  ${confdir}/clients.conf

# SNMP CONFIGURATION
#
#  Snmp configuration is only valid if SNMP support was enabled
#  at compile time.
#
#  To enable SNMP querying of the server, set the value of the
#  'snmp' attribute to 'yes'
#
snmp	= no
$INCLUDE  ${confdir}/snmp.conf

# THREAD POOL CONFIGURATION
#
#  The thread pool is a long-lived group of threads which
#  take turns (round-robin) handling any incoming requests.
#
#  You probably want to have a few spare threads around,
#  so that high-load situations can be handled immediately.  If you
#  don't have any spare threads, then the request handling will
#  be delayed while a new thread is created, and added to the pool.
#
#  You probably don't want too many spare threads around,
#  otherwise they'll be sitting there taking up resources, and
#  not doing anything productive.
#
#  The numbers given below should be adequate for most situations.
#
thread pool {
	#  Number of servers to start initially --- should be a reasonable
	#  ballpark figure.
	start_servers = 5

	#  Limit on the total number of servers running.
	#
	#  If this limit is ever reached, clients will be LOCKED OUT, so it
	#  should NOT BE SET TOO LOW.  It is intended mainly as a brake to
	#  keep a runaway server from taking the system with it as it spirals
	#  down...
	#
	#  You may find that the server is regularly reaching the
	#  'max_servers' number of threads, and that increasing
	#  'max_servers' doesn't seem to make much difference.
	#
	#  If this is the case, then the problem is MOST LIKELY that
	#  your back-end databases are taking too long to respond, and
	#  are preventing the server from responding in a timely manner.
	#
	#  The solution is NOT do keep increasing the 'max_servers'
	#  value, but instead to fix the underlying cause of the
	#  problem: slow database, or 'hostname_lookups=yes'.
	#
	#  For more information, see 'max_request_time', above.
	#
	max_servers = 32

	#  Server-pool size regulation.  Rather than making you guess
	#  how many servers you need, FreeRADIUS dynamically adapts to
	#  the load it sees, that is, it tries to maintain enough
	#  servers to handle the current load, plus a few spare
	#  servers to handle transient load spikes.
	#
	#  It does this by periodically checking how many servers are
	#  waiting for a request.  If there are fewer than
	#  min_spare_servers, it creates a new spare.  If there are
	#  more than max_spare_servers, some of the spares die off.
	#  The default values are probably OK for most sites.
	#
	min_spare_servers = 3
	max_spare_servers = 10

	#  There may be memory leaks or resource allocation problems with
	#  the server.  If so, set this value to 300 or so, so that the
	#  resources will be cleaned up periodically.
	#
	#  This should only be necessary if there are serious bugs in the
	#  server which have not yet been fixed.
	#
	#  '0' is a special value meaning 'infinity', or 'the servers never
	#  exit'
	max_requests_per_server = 0
}

# MODULE CONFIGURATION
#
#  The names and configuration of each module is located in this section.
#
#  After the modules are defined here, they may be referred to by name,
#  in other sections of this configuration file.
#
modules {
	#
	#  Each module has a configuration as follows:
	#
	#	name [ instance ] {
	#		config_item = value
	#		...
	#	}
	#
	#  The 'name' is used to load the 'rlm_name' library
	#  which implements the functionality of the module.
	#
	#  The 'instance' is optional.  To have two different instances
	#  of a module, it first must be referred to by 'name'.
	#  The different copies of the module are then created by
	#  inventing two 'instance' names, e.g. 'instance1' and 'instance2'
	#
	#  The instance names can then be used in later configuration
	#  INSTEAD of the original 'name'.  See the 'radutmp' configuration
	#  below for an example.
	#

	# Unix /etc/passwd style authentication
	#
	unix {
		#
		#  Cache /etc/passwd, /etc/shadow, and /etc/group
		#
		#  The default is to NOT cache them.
		#
		#  For FreeBSD and NetBSD, you do NOT want to enable
		#  the cache, as it's password lookups are done via a
		#  database, so set this value to 'no'.
		#
		#  Some systems (e.g. RedHat Linux with pam_pwbd) can
		#  take *seconds* to check a password, when th passwd
		#  file containing 1000's of entries.  For those systems,
		#  you should set the cache value to 'yes', and set
		#  the locations of the 'passwd', 'shadow', and 'group'
		#  files, below.
		#
		# allowed values: {no, yes}
		cache = no

		# Reload the cache every 600 seconds (10mins). 0 to disable.
		cache_reload = 600
	}

	# Write a detailed log of all accounting records received.
	#
	detail {
		#  Note that we do NOT use NAS-IP-Address here, as
		#  that attribute MAY BE from the originating NAS, and
		#  NOT from the proxy which actually sent us the
		#  request.  The Client-IP-Address attribute is ALWAYS
		#  the address of the client which sent us the
		#  request.
		#
		#  The following line creates a new detail file for
		#  every radius client (by IP address or hostname).
		#  In addition, a new detail file is created every
		#  day, so that the detail file doesn't have to go
		#  through a 'log rotation'
		#
		#  If your detail files are large, you may also want
		#  to add a ':%H' (see doc/variables.txt) to the end
		#  of it, to create a new detail file every hour, e.g.:
		#
		#   ..../detail-%Y%m%d:%H
		#
		#  This will create a new detail file for every hour.
		#
		detailfile = ${radacctdir}/%{Client-IP-Address}/detail-%Y%m%d

		#
		#  The Unix-style permissions on the 'detail' file.
		#
		#  The detail file often contains secret or private
		#  information about users.  So by keeping the file
		#  permissions restrictive, we can prevent unwanted
		#  people from seeing that information.
		detailperm = 0600
	}

	#
	#  Many people want to log authentication requests.
	#  Rather than modifying the server core to print out more
	#  messages, we can use a different instance of the 'detail'
	#  module, to log the authentication requests to a file.
	#
	#  You will also need to un-comment the 'auth_log' line
	#  in the 'authorize' section, below.
	#
	detail auth_log {
		detailfile = ${radacctdir}/%{Client-IP-Address}/auth-detail-%Y%m%d

		#
		#  This MUST be 0600, otherwise anyone can read
		#  the users passwords!
		  detailperm = 0600
	}

	#
	#  This module logs authentication reply packets sent
	#  to a NAS.  Both Access-Accept and Access-Reject packets
	#  are logged.
	#
	#  You will also need to un-comment the 'reply_log' line
	#  in the 'post-auth' section, below.
	#
	detail reply_log {
		detailfile = ${radacctdir}/%{Client-IP-Address}/reply-detail-%Y%m%d

		#
		#  This MUST be 0600, otherwise anyone can read
		#  the users passwords!
		 detailperm = 0600
	}

	#
	#  This module logs packets proxied to a home server.
	#
	#  You will also need to un-comment the 'pre_proxy_log' line
	#  in the 'pre-proxy' section, below.
	#
	# detail pre_proxy_log {
		# detailfile = ${radacctdir}/%{Client-IP-Address}/pre-proxy-detail-%Y%m%d

		#
		#  This MUST be 0600, otherwise anyone can read
		#  the users passwords!
		# detailperm = 0600
	# }

	#
	#  This module logs response packets from a home server.
	#
	#  You will also need to un-comment the 'post_proxy_log' line
	#  in the 'post-proxy' section, below.
	#
	# detail post_proxy_log {
		# detailfile = ${radacctdir}/%{Client-IP-Address}/post-proxy-detail-%Y%m%d

		#
		#  This MUST be 0600, otherwise anyone can read
		#  the users passwords!
		# detailperm = 0600
	# }

	# Create a unique accounting session Id.  Many NASes re-use or
	# repeat values for Acct-Session-Id, causing no end of
	# confusion.
	#
	#  This module will add a (probably) unique session id 
	#  to an accounting packet based on the attributes listed
	#  below found in the packet.  See doc/rlm_acct_unique for
	#  more information.
	#
	acct_unique {
		key = "User-Name, Acct-Session-Id, NAS-IP-Address, Client-IP-Address, NAS-Port"
	}

	#  Write a 'utmp' style file, of which users are currently
	#  logged in, and where they've logged in from.
	#
	#  This file is used mainly for Simultaneous-Use checking,
	#  and also 'radwho', to see who's currently logged in.
	#
	radutmp {
		#  Where the file is stored.  It's not a log file,
		#  so it doesn't need rotating.
		#
		filename = ${logdir}/radutmp

		#  The field in the packet to key on for the
		#  'user' name,  If you have other fields which you want
		#  to use to key on to control Simultaneous-Use,
		#  then you can use them here.
		#
		#  Note, however, that the size of the field in the
		#  'utmp' data structure is small, around 32
		#  characters, so that will limit the possible choices
		#  of keys.
		#
		#  You may want instead: %{Stripped-User-Name:-%{User-Name}}
		username = %{User-Name}

		#  Whether or not we want to treat "user" the same
		#  as "USER", or "User".  Some systems have problems
		#  with case sensitivity, so this should be set to
		#  'no' to enable the comparisons of the key attribute
		#  to be case insensitive.
		#
		case_sensitive = yes

		#  Accounting information may be lost, so the user MAY
		#  have logged off of the NAS, but we haven't noticed.
		#  If so, we can verify this information with the NAS,
		#
		#  If we want to believe the 'utmp' file, then this
		#  configuration entry can be set to 'no'.
		#
		check_with_nas = yes		

		# Set the file permissions, as the contents of this file
		# are usually private.
		perm = 0600

		callerid = "yes"
	}

	# "Safe" radutmp - does not contain caller ID, so it can be
	# world-readable, and radwho can work for normal users, without
	# exposing any information that isn't already exposed by who(1).
	#
	# This is another 'instance' of the radutmp module, but it is given
	# then name "sradutmp" to identify it later in the "accounting"
	# section.
	radutmp sradutmp {
		filename = ${logdir}/sradutmp
		perm = 0644
		callerid = "no"
	}

	# attr_filter - filters the attributes received in replies from
	# proxied servers, to make sure we send back to our RADIUS client
	# only allowed attributes.
	attr_filter {
		attrsfile = ${confdir}/attrs
	}

	#  counter module:
	#  This module takes an attribute (count-attribute).
	#  It also takes a key, and creates a counter for each unique
	#  key.  The count is incremented when accounting packets are
	#  received by the server.  The value of the increment depends
	#  on the attribute type.
	#  If the attribute is Acct-Session-Time or of an integer type we add the
	#  value of the attribute. If it is anything else we increase the
	#  counter by one.
	#
	#  The 'reset' parameter defines when the counters are all reset to
	#  zero.  It can be hourly, daily, weekly, monthly or never.
	#
	#  hourly: Reset on 00:00 of every hour
	#  daily: Reset on 00:00:00 every day
	#  weekly: Reset on 00:00:00 on sunday
	#  monthly: Reset on 00:00:00 of the first day of each month
	#
	#  It can also be user defined. It should be of the form:
	#  num[hdwm] where:
	#  h: hours, d: days, w: weeks, m: months
	#  If the letter is ommited days will be assumed. In example:
	#  reset = 10h (reset every 10 hours)
	#  reset = 12  (reset every 12 days)
	#
	#
	#  The check-name attribute defines an attribute which will be
	#  registered by the counter module and can be used to set the
	#  maximum allowed value for the counter after which the user
	#  is rejected.
	#  Something like:
	#
	#  DEFAULT Max-Daily-Session := 36000
	#          Fall-Through = 1
	#
	#  You should add the counter module in the instantiate
	#  section so that it registers check-name before the files
	#  module reads the users file.
	#
	#  If check-name is set and the user is to be rejected then we
	#  send back a Reply-Message and we log a Failure-Message in
	#  the radius.log
	#  If the count attribute is Acct-Session-Time then on each login
	#  we send back the remaining online time as a Session-Timeout attribute
	#
	#  The counter-name can also be used instead of using the check-name
	#  like below:
	#
	#  DEFAULT  Daily-Session-Time > 3600, Auth-Type = Reject
	#      Reply-Message = "You've used up more than one hour today"
	#
	#  The allowed-servicetype attribute can be used to only take
	#  into account specific sessions. For example if a user first
	#  logs in through a login menu and then selects ppp there will
	#  be two sessions. One for Login-User and one for Framed-User
	#  service type. We only need to take into account the second one.
	#
	#  The module should be added in the instantiate, authorize and
	#  accounting sections.  Make sure that in the authorize
	#  section it comes after any module which sets the
	#  'check-name' attribute.
	#
	counter daily {
		filename = ${raddbdir}/db.daily
		key = User-Name
		count-attribute = Acct-Session-Time
		reset = daily
		counter-name = Daily-Session-Time
		check-name = Max-Daily-Session
		allowed-servicetype = Framed-User
		cache-size = 5000
	}

	# The "always" module is here for debugging purposes. Each
	# instance simply returns the same result, always, without
	# doing anything.
	always fail {
		rcode = fail
	}
	always reject {
		rcode = reject
	}
	always ok {
		rcode = ok
		simulcount = 0
		mpp = no
	}

	#
	#  The 'expression' module currently has no configuration.
	#
	#  This module is useful only for 'xlat'.  To use it,
	#  put 'exec' into the 'instantiate' section.  You can then
	#  do dynamic translation of attributes like:
	#
	#  Attribute-Name = `%{expr:2 + 3 + %{exec: uid -u}}`
	#
	#  The value of the attribute will be replaced with the output
	#  of the program which is executed.  Due to RADIUS protocol
	#  limitations, any output over 253 bytes will be ignored.
	expr {
	}

	#
	#  The 'digest' module currently has no configuration.
	#
	#  "Digest" authentication against a Cisco SIP server.
	#  See 'doc/rfc/draft-sterman-aaa-sip-00.txt' for details
	#  on performing digest authentication for Cisco SIP servers.
	#
	digest {
	}

	#  Do server side ip pool management. Should be added in post-auth and
	#  accounting sections.
	#
	#  The module also requires the existance of the Pool-Name
	#  attribute. That way the administrator can add the Pool-Name
	#  attribute in the user profiles and use different pools
	#  for different users. The Pool-Name attribute is a *check* item not
	#  a reply item.
	#
	# Example:
	# radiusd.conf: ippool students { [...] }
	# users file  : DEFAULT Group == students, Pool-Name := "students"
	#
	# ********* IF YOU CHANGE THE RANGE PARAMETERS YOU MUST *********
	# ********* THEN ERASE THE DB FILES                     *********
	#
	ippool main_pool {

		#  range-start,range-stop: The start and end ip
		#  addresses for the ip pool
		range-start = 192.168.1.1
		range-stop = 192.168.3.254

		#  netmask: The network mask used for the ip's
		netmask = 255.255.255.0

		#  cache-size: The gdbm cache size for the db
		#  files. Should be equal to the number of ip's
		#  available in the ip pool
		cache-size = 800

		# session-db: The main db file used to allocate ip's to clients
		session-db = ${raddbdir}/db.ippool

		# ip-index: Helper db index file used in multilink
		ip-index = ${raddbdir}/db.ipindex

		# override: Will this ippool override a Framed-IP-Address already set
		override = no

		# maximum-timeout: If not zero specifies the maximum time in seconds an
		# entry may be active. Default: 0
		maximum-timeout = 0
	}

	# ANSI X9.9 token support.  Not included by default.
	# $INCLUDE  ${confdir}/x99.conf

}

# Instantiation
#
#  This section orders the loading of the modules.  Modules
#  listed here will get loaded BEFORE the later sections like
#  authorize, authenticate, etc. get examined.
#
#  This section is not strictly needed.  When a section like
#  authorize refers to a module, it's automatically loaded and
#  initialized.  However, some modules may not be listed in any
#  of the following sections, so they can be listed here.
#
#  Also, listing modules here ensures that you have control over
#  the order in which they are initalized.  If one module needs
#  something defined by another module, you can list them in order
#  here, and ensure that the configuration will be OK.
#
instantiate {
	#
	#  The expression module doesn't do authorization,
	#  authentication, or accounting.  It only does dynamic
	#  translation, of the form:
	#
	#	Session-Timeout = `%{expr:2 + 3}`
	#
	#  So the module needs to be instantiated, but CANNOT be
	#  listed in any other section.  See 'doc/rlm_expr' for
	#  more information.
	#
	expr
}

#  Authorization. First preprocess (hints and huntgroups files),
#  then realms, and finally look in the "users" file.
#
#  The order of the realm modules will determine the order that
#  we try to find a matching realm.
#
#  Make *sure* that 'preprocess' comes before any realm if you 
#  need to setup hints for the remote radius server
authorize {
	#
	#  If you want to have a log of authentication requests,
	#  un-comment the following line, and the 'detail auth_log'
	#  section, above.
	auth_log
}

#  Authentication.
#
#
#  This section lists which modules are available for authentication.
#  Note that it does NOT mean 'try each module in order'.  It means
#  that a module from the 'authorize' section adds a configuration
#  attribute 'Auth-Type := FOO'.  That authentication type is then
#  used to pick the apropriate module from the list below.
#

#  In general, you SHOULD NOT set the Auth-Type attribute.  The server
#  will figure it out on its own, and will do the right thing.  The
#  most common side effect of erroneously setting the Auth-Type
#  attribute is that one authentication method will work, but the
#  others will not.
#
#  The common reasons to set the Auth-Type attribute by hand
#  is to either forcibly reject the user, or forcibly accept him.
#
authenticate {
	#
	#  See 'man getpwent' for information on how the 'unix'
	#  module checks the users password.  Note that packets
	#  containing CHAP-Password attributes CANNOT be authenticated
	#  against /etc/passwd!  See the FAQ for details.
	#  
	unix
}

#
#  Pre-accounting.  Decide which accounting type to use.
#
preacct {
	#
	#  Ensure that we have a semi-unique identifier for every
	#  request, and many NAS boxes are broken.
	acct_unique
}

#
#  Accounting.  Log the accounting data.
#
accounting {
	#
	#  Create a 'detail'ed log of the packets.
	#  Note that accounting requests which are proxied
	#  are also logged in the detail file.
	detail

	#
	#  For Simultaneous-Use tracking.
	#
	#  Due to packet losses in the network, the data here
	#  may be incorrect.  There is little we can do about it.
	radutmp
}

#  Session database, used for checking Simultaneous-Use. Either the radutmp 
#  or rlm_sql module can handle this.
#  The rlm_sql module is *much* faster
session {
	radutmp
}

Configuring unix password/group lookup on FreeBSD

Matthew Grooms