Hi Alan, Thanks for your response! I tried putting the Ki and OP into the /etc/freeradius/users file as follows DEFAULT Suffix == "3gppnetwork.org" EAP-Type := SIM, EAP-SIM-Ki := 0xd0356b75c19b4a62b1a5423aacc96e42, EAP-Sim-Algo-Version := 1 I know that this will apply for any user with a suffix of 3gppnetwork.org but I just wanted to do a sanity check with it. Unfortunately, this doesn't cause the attributes to be put in the control list, but instead in request->reply->vps. What would be the best way to configure the server to put those attributes in the control list? Thanks, Shane ________________________________ From: Freeradius-Users <freeradius-users-bounces+shaneguan=microsoft.com@lists.freeradius.org> on behalf of Alan DeKok <aland@deployingradius.com> Sent: Friday, February 4, 2022 7:14 AM To: FreeRadius users mailing list <freeradius-users@lists.freeradius.org> Subject: [EXTERNAL] Re: Help in Configuring EAP-SIM [You don't often get email from aland@deployingradius.com. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.] On Feb 3, 2022, at 5:28 PM, Shane Guan via Freeradius-Users <freeradius-users@lists.freeradius.org> wrote:
I am writing to inquire about the best way to configure freeradius for eap-sim.
* I am using version 3.0.25 * I have a test sim peer and know the Ki, OP, and IMSI for it.
That's good.
How would I configure freeradius to use the Ki and OP when it receives a message from the test peer requesting to authenticate with EAP-SIM?
You just tell the server what they are, and the server does the right thing.
I tried putting the Ki and OP in the users file but that didn't work.
What does that mean?
According to doc/modules/rlm_eap it says I need to write a separate module to generate GSM triplets given the Ki. However, in src/modules/rlm_eap/types/rlm_eap_sim/rlm_eap_sim.c:eap_sim_get_challenge it looks like there is already a module to generate GSM triplets given the Ki. How could I configure freeradius to call it?
To be honest... this isn't a commonly used feature. :( From a quick check of the source, you put the EAP-SIM-* attributes into the "control" list, and it *should* just work. Alan DeKok. - List info/subscribe/unsubscribe? See https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.freeradius.org%2Flist%2Fusers.html&data=04%7C01%7Cshaneguan%40microsoft.com%7C73bd55f4ac354c72876e08d9e7f10aaf%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637795844733223927%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=L%2BbAiOw9WtcaOVZYBLXJ%2FKV5sTyXVV8nJMQ7viXhey4%3D&reserved=0