if I know the shared secret , how is that used to generate the attributes ? any guides out there for this ?
Yes. I looked at this a couple of months ago. We now have implementations of COMP128v1, v2 and v3. If your sim cards use those algorithms then you can authenticate wireless users if you have the Ki (in theory). I've not actually tested this yet... You need to set: update control { EAP-Sim-Algo-Version := [1|2|3] EAP-Sim-KI := <the subscriber's Ki> } This is 3.0.x and master branches only. I don't believe there's a released version with the code in.
I also have access to a SS7 network , any examples on how to write a module to fetch the attributes from there ?
You can use rlm_example as a starting point. You'll need to know C. In terms of talking with ss7 servers libss7 might be a good place to start, unless anyone knows of something better maintained. I'd be happy to give you pointers if you run into issues, so long as the final product is contributed back to the project.
As I stated before I'm "NEW" at this , I've been working with radius for a few weeks , mainly using it in conjunction with a learning book called FreeRadius Beginners guide.
Ah. Sorry about the formatting, it wasn't us. -Arran Arran Cudbard-Bell <a.cudbardb@freeradius.org> FreeRADIUS Development Team FD31 3077 42EC 7FCD 32FE 5EE2 56CF 27F9 30A8 CAA2