xenial (5) rlm_acct_unique.5.gz

NAME

       rlm_acct_unique - FreeRADIUS Module

DESCRIPTION

       The rlm_acct_unique module creates a unique accounting session Id.

       Many  NAS  vendors  have  their  equipment  supply  an Acct-Session-Id attribute which is not unique over
       reboots.  This makes accounting difficult, as there will be many independent sessions with the same Acct-
       Session-Id attribute.  This module uses the Acct-Session-Id attribute, along with other attributes in the
       request, to create a more unique session ID, called Acct-Unique-Session-Id.

       The main configuration items to be aware of are:

       key    A list of the attributes used in calculating an MD5 hash which is used as the value for the unique
              session id.

CONFIGURATION

       modules {
         ...
         acct_unique {
            key = "User-Name, Acct-Session-Id, NAS-IP-Address, NAS-Port"
         }
         ...
       }
        ...
       preacct {
         ...
         acct_unique
         ...
       }

       After  generating  the  MD5  hash,  the module adds it to the accounting request packet received from the
       client.  It will look something like this in your detail file:

            Acct-Unique-Session-Id = "c66ef57e480b9d26"

       NOTE:  Any attribute you specify that is not found in the 'dictionary' file will cause the server to fail
       and exit with an error.

       NOTE:  If you want the Acct-Unique-Session-Id of the Start and the Stop packet of a particular session to
       match, you must use values for the key that will stay the same for the Start and Stop.  The above example
       is  a  good start.  Adding 'Acct-Session-Time', for example, would cause a mismatch because that value is
       not the same on the Start and Stop accounting packets.

SECTIONS

       authorization, pre-accounting, accounting

FILES

       /etc/raddb/radiusd.conf

SEE ALSO

       radiusd(8), radiusd.conf(5)

AUTHORS

       Chris Parker, cparker@segv.org

                                                 3 February 2004                              rlm_acct_unique(5)