Dell PowerConnect W Clearpass 100 Software RADIUS Troubleshooting TechNote - Page 4

Tech Note - RADIUS Troubleshooting Version 0.9 Detailed Troubleshooting If deeper troubleshooting is required, you can enable a detailed RADIUS debugger session by clicking on the Debug RADIUS Server button shown in the amigopod screenshot below. When debugging RADIUS problems, the #1 problem to watch out for is incorrect shared secrets. This is almost always the problem when diagnosing a "Login incorrect" message. The following section shows some typical failure scenarios and what you can expect to see in the amigopod RADIUS Debug screens. For completeness, we have tried all 8 combinations of PAP/CHAP authentication, correct password/incorrect password, and correct shared secret/incorrect shared secret. The results are as follows: Correct Password - Correct shared secret - CHAP ==> Access-Accept Correct Password - Correct shared secret - PAP ==> Access-Accept Correct password - Incorrect shared secret - CHAP ==> Access-Accept Correct password - Incorrect shared secret - PAP ==> Access-Reject Login incorrect: [[email protected]] Incorrect password - Correct shared secret - CHAP ==> Access-Reject Login incorrect (rlm_chap: Wrong user password): [[email protected]] Incorrect password - Correct shared secret - PAP ==> Access-Reject Login incorrect: [[email protected]] Incorrect password - Incorrect shared secret - CHAP ==> Access-Reject Login incorrect (rlm_chap: Wrong user password): [[email protected]] Incorrect password - Incorrect shared secret - PAP ==> Access-Reject Login incorrect: [[email protected]] CONFIDENTIAL 4