| Message Code | ASA-4-403104 |
| Severity | Warning |
| Description | PPP virtual interface interface_name requires mschap for MPPE. |
| Explanation | The Microsoft Point-to-Point Encryption (MPPE) is configured, but MS-CHAP authentication is not. |
| User Action | Add MS-CHAP authentication with the vpdn group group_name ppp authentication command. |
| Reference Links |
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