Enter the MAC address of the client whose password is to be managed by the challenge-password table.
- SNMP ID:
 - 2.39.2.5.3.3
 - Console path:
 - Setup > Certificates > SCEP-CA > CA-certificates > Challenge-Passwords
 - Possible values:
 Max. 12 characters from 0123456789abcdef
- Default:
 - empty