https://community.cisco.com/t5/wireless/failed-tacacs-user-authentication/m-p/194020#M20909 <HTML><HEAD></HEAD><BODY><P>I had the same thing. Make sure that if you are doing MAC authentication or any authentication. Make sure you observe case sensitvity. The MAC addresses are sent to the ACS server as all lower case.</P></BODY></HTML> Tue, 25 Mar 2003 13:42:04 GMT rprpalmer 2003-03-25T13:42:04Z https://community.cisco.com/t5/wireless/failed-tacacs-user-authentication/m-p/194019#M20908 <P>I want to autenticate admin users in a AP350 with v12.01T1, with a tacacs+ server (ACS v3.1).</P><P>I configured on the AP350 an authentication server, port 49, tacacs, correct key, etc.</P><P>I configured the aaa client, users, etc, and I obtain in the ACS "failed attempts" this message: "CS password invalid". I am sure the password I typed was correct.</P><P></P><P>Does anyone know what could be happening?</P><P></P><P>TIA</P> Sun, 04 Jul 2021 15:35:56 GMT https://community.cisco.com/t5/wireless/failed-tacacs-user-authentication/m-p/194019#M20908 venancio.martinez 2021-07-04T15:35:56Z https://community.cisco.com/t5/wireless/failed-tacacs-user-authentication/m-p/194020#M20909 <HTML><HEAD></HEAD><BODY><P>I had the same thing. Make sure that if you are doing MAC authentication or any authentication. Make sure you observe case sensitvity. The MAC addresses are sent to the ACS server as all lower case.</P></BODY></HTML> Tue, 25 Mar 2003 13:42:04 GMT https://community.cisco.com/t5/wireless/failed-tacacs-user-authentication/m-p/194020#M20909 rprpalmer 2003-03-25T13:42:04Z