How is a custom IPS Signature created using Zscaler?

A custom IPS Signature in Zscaler is created by inputting code in the ZIA admin portal using Snort syntax. This method allows network administrators to define detailed and specific rules that can identify and mitigate particular types of threats based on traffic patterns.

Using Snort syntax is crucial as it provides a standardized way of writing intrusion detection signatures, which helps in maintaining consistency and accuracy when creating custom rules. The ability to write these signatures directly into the ZIA admin portal empowers users to tailor their security measures to the unique needs of their environment, enhancing the overall effectiveness of Zscaler's threat detection capabilities.

While other approaches might seem plausible—such as graphical tools or uploading existing signatures—these do not directly pertain to the established method of creating custom IPS signatures within Zscaler’s architecture. Manually configuring hardware devices also diverges from Zscaler's cloud-based model, where the focus is primarily on software-defined security management. Consequently, employing Snort syntax in the ZIA admin portal is the definitive approach to custom IPS signature creation.