Core Rule set is a set of protection rules that the WAF Policy uses. This section discusses how to configure and update CRS rules.
WAF Signatures is a security service delivered through Cloud Services. The WAF Signature service is based on an opt-in model, that is deactivated by default.
For more information on configuring WAF Signatures in the Avi Load Balancer through auto and manual modes, see Web Application Firewall (WAF) Signatures Service in the VMware Avi Load Balancer Cloud Services Guide.