Fingerbank is not an organ bank for nice fingers. Fingerbank is the official website for DHCP [External] fingerprints.

A DHCP fingerprint is an almost unique identifier for a specific operating system or device type. Due to the broadcast and pervasive nature of DHCP, DHCP fingerprinting is a very low-cost low-effort way to do passive system identification and inventory.

Thus, DHCP fingerprints are very useful for network sniffers, protocol analyzers or Network Access Control [External] solutions.

How does it work?

Whenever the DHCP client of the operating system issues a DHCP request, it asks for DHCP options (like DNS Server, WINS server, default gateway, etc.). The order in which the DHCP client asks for those options is relatively unique and identifies the specific operating system version.

Stay informed!

To know about the latest DHCP signatures updates and tools related to DHCP fingerprinting follow us on twitter @fingerbank [External] or subscribe to the community mailing lists.