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Man Pages


Manual Reference Pages  -  RLM_COUNTER (5)

NAME

rlm_counter - FreeRADIUS Module

CONTENTS

Description
Notes
Sections
Files
Author

DESCRIPTION

The rlm_counter module provides a general framework to allow access based on accumulated usage of a resource, such as total time online in a given period, total data transferred in a given period, etc. This is very useful in a ’Prepaid Service’ situation, where a user has paid for a finite amount of usage and should not be allowed to use more than that service. Collection, monitoring, and replenishment of prepaid services are beyond the scope of this module.

The main configuration items to be aware of are:
filename The filename where the usage data is stored.
key An attribute which will be present in the Access-Request to be used as the ’index’ value for the counter. A counter entry is tracked for each unique key. The most likely key you will want to use is User-Name.
count_attribute An attribute which will be used to increment the counter value. If this attribute is Acct-Session-Time or an integer value the counter data is incremented by the Attribute value. For all other attribute types the counter is incremented by one.
reset How frequently the counter data should be set back to 0. Valid values for this variable are: hourly, daily, weekly, monthly, ornever Alternatively, it can be user defined, in the form: num[hdwm]. num is a numeric value, followed by one or none of the following letters. h: hours, d: days, w: weeks, m: months.
check_name This defines an attribute name 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. If Daily-Session-Time is set, you can use the following syntax in the Users file to set a cap of 3600 seconds ( 8 hours ):
 

DEFAULT Max-Daily-Session := 3600

reply_name This is the name of the attribute which will contain the remaining value for the counter in the reply packet when the user is successfully authorized. The default attribute name is "Session-Timeout".
allowed_service_type This can be used to only apply the limitations to specific service types of sessions. For example, setting this to Framed-User will only apply the counter module to Framed sessions, excluding other types such as Telnet or Rlogin.
cache_size The maximum size of the cache to be used by the module. The default is 1000.

NOTES

This module registers an attribute, so it should be added to the instantiate section, to be called on server startup. When used in the authorize section, it must come after any modules which set the ’check_name’ attribute.

SECTIONS

instantiate, authorize, accounting

FILES

/etc/raddb/radiusd.conf

SEE ALSO

radiusd(8), radiusd.conf(5) rlm_sqlcounter(5)

AUTHOR

Chris Parker, cparker@segv.org

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RLM_COUNTER (5) 13 March 2004

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