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小白's avatar
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Jan 18, 2023

what's Device ID in asm?

  • G-Rob's avatar
    Jan 18, 2023

    Device ID is an ASM / AdvWAF feature. The BIG-IP uses JavaScript to create a device ID from client. The JavaScript tries to obtain various signals from the client to retrieve attributes like the browser type and version, installed updates, installed fonts, and others. The BIG-IP stores the device ID in the TSPD101 cookie.

    This information can be used for example with brute force attack prevention or web scraping protection.

    More information: