Hi All, I was having a very simple network for testing, WIN XP (SP2) client, connecting via a wireless router . in PEAP MSCHAPv2 Mode .. Now, everything was working fine with no issues while I was using a D-Link AP, I replaced it with a Linksys Router (WRT54G) and boom boom bang !!!! .. I cannot get even basic WPA-TKIP RADIUS to work. (Btw, My Win XP PEAP is set for asking for credentials and not default use windows domain and password. no server certificate validation ) My observations: Issue 1: After wireless association, router send EAPOL-req. Identiy, 1) If I enter credentials, say pradeep/pradeep .. they go to radius.. logs attached .. radius sends a challenge to router. router doesnt seem to be forwarding this ! 2) If I change above PEAP setting to use domain name .. the exchange goes through but fails at the last step, saying no password found. Issue 2: Even if I assume that linksys is somehow looking for "\\" in incoming username requests, I was trying to configure radius for that. And here is where I need critical help. Is just entering the username in this format in users file ok ? SBNOTEBOOK\\Administrator Auth-Type := Local, User-Password == "sbook" SB_Uplink = 10, SB_Downlink = 20, Session-Timeout = 600, Fall-Through = 0 I have tried all combinations here with "\" instead of "\\" .. turning on with_nt_domain_hack = yes in conf file. I am new and am sure I am missing something very basic here, any help would be appreciated. I am attaching a log from Issue1, step2 and radiusd.conf. Cheers, Alfred