wifi ip allocation

Alan DeKok aland at deployingradius.com
Thu Dec 2 07:38:06 CET 2010

Alexandre Chapellon wrote:
> Am not sure to understand... Once the wifi user entered the network
> (level2: no IP yet), I have an entry for its sessions in my accouting
> database, with username, sessionID, maybe mac_address and so on...

  Yes.  This often includes NAS IP and port.

> But when the user sends a DHCP request to obtain IP address (gain level3
> access), that request may not contain any reference to the username, but
> to the mac address... that's it?

  And often the NAS IP and port.

> So the trick would be to get the username from the mac address querying
> the accouting database?


> And then?  Can I use any ippool module in the freeradius DHCP server? or
> Do I have to use static mapping mac2ip?

  The ippool module doesn't do allocation for DHCP.  But you could write
a short Perl program to do it.

  Alan DeKok.

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