Hi, I have understood that you used EAP-AKA for UE authentication. I amnot able to find EAP-AKA as mutual authenticator in ePDG standard. Can you please refer the clause where you get this point to use EAP-AKA as mutual authenticator between UE and ePDG.
Alsoin the template swanctl.conf you have use EAP-AKA in both local and remote side. Whereas for epdg you have written a new auth method EAP-EPDG, right? That means when UE sends packet ePDG will invoke its EPDG code inside strongswan and then extractUE's EAP identity and sends to AAA for authentication. Here UE is getting authenticated not the ePDG. Is my understanding correct? Thanks Subhajit On Mon, 17 Feb 2025 14:21:35 +0100, Alexander 'lynxis' Couzens wrote Hi Subhajit, > I have a question regarding the strongSwan configuration. Could you please > share the ipsec.conf or swanctl.conf that you used when testing with real > phones? I’d like to see what authentication method was used in your test > case. Based on my understanding, it could be either PSK (Pre-Shared Key) or > certificate-based. > Additionally, since mobile devices typically send a CERTREQ by default, I’m > curious how you managed to validate it at the ePDG end. Also, could you > explain how tunnel authentication was handled/configured in your setup? Any > further details would be appreciated. no it's based on EAP-AKA or EAP-AKA' which allows mutual authentication. Yes, the certificate would also improve the situation, but it's optional. You can find a description of my setup here: https://projects.osmocom.org/projects/osmo-epdg/wiki/Hosted_epdg_playground Further to read: https://projects.osmocom.org/projects/osmo-epdg/wiki/EPDG_implementation_plan I used the following setup for testing: https://gitea.osmocom.org/ims-volte-vowifi/ansible-prototype/src/branch/master/roles/epdg/templates/swanctl/swanctl.conf Best, lynxis Thanks & Regards Subhajit Chatterjee Staff No : 5221 C-DOT Mehrauli,New Delhi
