Help with executing accounting!

[Mohamed Abdulla]

Thanks Alan, I will look into the source!

Tim, your analysis of ipoque operation is correct. IPOQUE receives the accounting request as a way to dynamically map a user/IP to a class (where combination of rules/policy are applied based on protocol and application user is using). What I am trying to acheive actually is not proxying accounting from NAS towards IPOQUE, but rather triggering it from radius towards ipoque upon completion of user authentication and authorization. Ipoque is a Layer-2 bridge where it transparently sits at the gateway of network to control the use of Internet bandwidth and usage (p2p control, streaming control, and many categories of traffic). Users do not have to authenticate to ipoque, and users are actually within the LAN on wired network, where they authenticate to NAS which then contacts server. This setup I am trying for a university for controlling users access to Internet, taking advantage of the powerful capability of ipoque to discover traffic and categorise it with high precision
  ----- Original Message ----- 
  From: Tim Sylvester 
  To: 'FreeRadius users mailing list' 
  Sent: Saturday, March 27, 2010 11:03 PM
  Subject: RE: Help with executing accounting!


  Mohamed,

   

  Your description of the IPOQUE device and how it works is very strange. I was not able to find any usefully documentation on the IPOQUE device but here is what I think it is trying to do in a service provider network.

   

  Assume the service provider network uses DSL, 3G wireless, 802.11, etc. Users connect to the network via the NAS which could be a BRAS, GGSN, wireless AP, etc. The NAS sends an access request to the RADIUS server to authenticate the user. All user traffic going to the Internet goes through the IPOQUE device. The service provider wants to the IPOQUE device to manage traffic based on user or groups of users. Devices on the network are dynamically assigned an IP address. So, the IPOQUE device needs to map the IP address to the user, group of user and their bandwidth management “policy”. The NAS is configured to send RADIUS accounting packets to the RADIUS server. The RADIUS server is configured to add the IPOQUE attributes to the accounting request and proxy the request to the IPOQUE device. When the IPOQUE device receives the Accounting Start packet, it uses the information in the packet to map the IP address (Framed-IP-Address attribute) to the IPOQUE bandwidth management policy (ipoque-class attribute). The bandwidth management policy would then be applied to all traffic from that particular user/IP address.

   

  What type of network is your customer running (DSL, 3G, 802.11, etc.)? Do they authenticate user access to the network using a NAS which then contacts the RADIUS server? Is the IPOQUE device transparent to the user or does the IPOQUE device require users to authenticate themselves via a web page or some other mechanism?

   

  Tim

   

   

   

   

   

  From: freeradius-users-bounces+tim.sylvester=networkradius.com at lists.freeradius.org [mailto:freeradius-users-bounces+tim.sylvester=networkradius.com at lists.freeradius.org] On Behalf Of Mohamed Abdulla
  Sent: Saturday, March 27, 2010 3:26 AM
  To: freeradius-users at lists.freeradius.org
  Subject: Help with executing accounting!

   

  Hi All,

  I am new to using freeradius. I am in the process of integrating freeradius with "ipoque", which is a bandwidth control device. IPOQUE expects to see an accounting request from the radius server with specific attributes embedded, in order to control the bandwidth of the logged-in user. The scenario I am trying to realize is as follows:

    1.. For each user wishing to authenticate with freeradius, I have added two attributes in "users.conf" file. The first attribute is "Framed-IP-Address", while the second is a VSA "ipoque-class". 
    2.. When the user successfully authenticate with the freeradius, and after the freeradius sends Access-Accept, I want the radclient.exe to automatically send Accounting request to ipoque, including the following: User-Name, Framed-IP-Address, Accounting-Status-Type= Start and ipoque-class as configured in users.conf file. This should inform ipoque device about the user IP and the class of that user in order to apply th proper bandwidth rules for that user category. 
  I have started by creating a test user in users.conf as follows:

   

  shafzeen    Auth-Type := Local, User-Password == "1234"
   Framed-IP-Address = "192.168.1.12",
   ipoque-class = "raduser"

   

  then I created a text file named "ipoquestart.txt" with the following content:

   

  User-Name = "%{User-Name}",
  Framed-IP-Address = "%{reply:Framed-IP-Address}",
  Acct-Status-Type = Start,
  ipoque-class = "%{reply:ipoque-class}"

   

  Then in the radiusd.conf, in the modules section I have defined the following (The ipoque device IP is 192.168.0.1, secret "prx"):

   

  exec Start {
    wait = yes
    program = "${bindir}/radclient.exe -d ${raddbdir} -f ${bindir}/ipoquestart.txt -x -s 192.168.1 acct prx"
    input_pairs = reply
    output_pairs = reply
    packet_type = Access-Accept  
   }

  and in the instantiate section I have added Start. Also, in the post-auth I have put Start trying to send the radclient acct request towards ipoque.

  I have started freeradius in debug mode, and I noticed that the radclient is sending Framed-IP-Address as "0.0.0.0", and "ipoque-class"= "",

  and after that it is sending the reply with the needed values of Framed-IP-Address and "ipoque-class". I know there is some where something wrong I am doing, but I need someone to analyse what is happening and tell me how to correct it! Thanks



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