Motorola WiNG 5.5 Reference Manual page 591

Figure 8-11 Security - Device Fingerprinting - Client Signature screen
9. Provide the following information for each device signature:
Index
Message Type
Match Option
Use the spinner control to assign an index for this signature. A maximum of 16 signatures
can be created in each Client Identity.
Use the drop-down menu to designate the DHCP message to look for the signatures.
• request – look for signature in the DHCP request messages.
• discover – look for signature in the DHCP discover messages.
The Match Option field contains the following options:
• Option Codes – This indicates that the Option Codes passed in the DHCP request/
discover message is used for matching.
Options are passed in the DHCP discover/request messages as Option Code, Option Type,
Option Value sets. When Option Codes is selected, all the Option Code passed in the DHCP
discover/request are extracted and a fingerprint is derived. This derived fingerprint is used
to identify the device.
• Option – This indicates that a specific DHCP Option is used to identify the device. When
this option is selected, a text box is enable to input the DHCP Option that is used for
fingerprinting.
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