Hi Alan, Ivan, Thanks for the reply. I have posted the log below. After observing the radiusd log, I guess the authentication failed due to this ----------------- rlm_eap_md5: User-Password is required for EAP-MD5 authentication rlm_eap: Handler failed in EAP/md5 rlm_eap: Failed in EAP select ----------------- Do you have information about what does it mean? Here is the full radiusd log for your reference. Kind Regards, Nilanjan LOG: <./radiusd -X> =============================================================== Listening on authentication *:1812 Listening on accounting *:1813 Ready to process requests. rad_recv: Access-Request packet from host 127.0.0.1:32940, id=144, length=65 User-Name = "bob" NAS-IP-Address = 255.255.255.255 Message-Authenticator = 0xa60a0c258dad3abb53aea01bf11f49c0 NAS-Port = 0 EAP-Message = 0x02d2000801626f62 Processing the authorize section of radiusd.conf modcall: entering group authorize for request 0 modcall[authorize]: module "preprocess" returns ok for request 0 modcall[authorize]: module "chap" returns noop for request 0 modcall[authorize]: module "mschap" returns noop for request 0 rlm_realm: No '@' in User-Name = "bob", looking up realm NULL rlm_realm: No such realm "NULL" modcall[authorize]: module "suffix" returns noop for request 0 rlm_eap: EAP packet type response id 210 length 8 rlm_eap: No EAP Start, assuming it's an on-going EAP conversation modcall[authorize]: module "eap" returns updated for request 0 users: Matched entry DEFAULT at line 156 modcall[authorize]: module "files" returns ok for request 0 rlm_pap: WARNING! No "known good" password found for the user. Authentication m ay fail because of this. modcall[authorize]: module "pap" returns noop for request 0 modcall: leaving group authorize (returns updated) for request 0 rad_check_password: Found Auth-Type EAP auth: type "EAP" Processing the authenticate section of radiusd.conf modcall: entering group authenticate for request 0 rlm_eap: EAP Identity rlm_eap: processing type md5 rlm_eap_md5: Issuing Challenge modcall[authenticate]: module "eap" returns handled for request 0 modcall: leaving group authenticate (returns handled) for request 0 Sending Access-Challenge of id 144 to 127.0.0.1 port 32940 EAP-Message = 0x01d300160410a3b0bad42fe0907b49b1a040d29b3f0c Message-Authenticator = 0x00000000000000000000000000000000 State = 0x64c86949f0febe84aa06ac1938cb3768 Finished request 0 Going to the next request --- Walking the entire request list --- Waking up in 6 seconds... rad_recv: Access-Request packet from host 127.0.0.1:32940, id=145, length=97 User-Name = "bob" NAS-IP-Address = 255.255.255.255 Message-Authenticator = 0x4ac0488daabee8edcd3f63f9b43131ae NAS-Port = 0 State = 0x64c86949f0febe84aa06ac1938cb3768 EAP-Message = 0x02d300160410daf91e69f62c17f3cbd3dc31ec0936b1 Processing the authorize section of radiusd.conf modcall: entering group authorize for request 1 modcall[authorize]: module "preprocess" returns ok for request 1 modcall[authorize]: module "chap" returns noop for request 1 modcall[authorize]: module "mschap" returns noop for request 1 rlm_realm: No '@' in User-Name = "bob", looking up realm NULL rlm_realm: No such realm "NULL" modcall[authorize]: module "suffix" returns noop for request 1 rlm_eap: EAP packet type response id 211 length 22 rlm_eap: No EAP Start, assuming it's an on-going EAP conversation modcall[authorize]: module "eap" returns updated for request 1 users: Matched entry DEFAULT at line 156 modcall[authorize]: module "files" returns ok for request 1 rlm_pap: WARNING! No "known good" password found for the user. Authentication m ay fail because of this. modcall[authorize]: module "pap" returns noop for request 1 modcall: leaving group authorize (returns updated) for request 1 rad_check_password: Found Auth-Type EAP auth: type "EAP" Processing the authenticate section of radiusd.conf modcall: entering group authenticate for request 1 rlm_eap: Request found, released from the list rlm_eap: EAP/md5 rlm_eap: processing type md5 rlm_eap_md5: User-Password is required for EAP-MD5 authentication rlm_eap: Handler failed in EAP/md5 rlm_eap: Failed in EAP select modcall[authenticate]: module "eap" returns invalid for request 1 modcall: leaving group authenticate (returns invalid) for request 1 auth: Failed to validate the user. Delaying request 1 for 1 seconds Finished request 1 Going to the next request Waking up in 6 seconds... rad_recv: Access-Request packet from host 127.0.0.1:32940, id=145, length=97 Sending Access-Reject of id 145 to 127.0.0.1 port 32940 EAP-Message = 0x04d30004 Message-Authenticator = 0x00000000000000000000000000000000 --- Walking the entire request list --- Waking up in 3 seconds... --- Walking the entire request list --- Cleaning up request 0 ID 144 with timestamp 47610c4b Cleaning up request 1 ID 145 with timestamp 47610c4b Nothing to do. Sleeping until we see a request. ===============================================================