Also, check the AWS WAF Web ACL capacity units (WCU). We will speak about WAF’s limits in the AWS WAF limitations. Rules groups: such rules also can be grouped to be used in ACLs, also, AWS provides a set of already predefined groups – AWS Managed Rules, plus groups from its MarketplaceĪWS WAF has a capacity for its ACLs: each List can hold up to 1500 WCU (WAF Capacity Unit). Those rules can be to block an IP set, headers checks, checks for a request body content, etc. Rules: the rules themselves, describing which requests and how to check.IP Sets: list of IP ranges, that can be attached to an ACL.Web ACL: Access Control Lists, which holds a list of rules to check incoming requests.In case of finding any request that sits WAF’s rules, it will be blocked, and its sender will get a 403 response. Can be attached to an AWS Application LoadBalancer, AWS CloudFront distribution, Amazon API Gateway, and AWS AppSync GraphQL API. AWS WAF (Web Application Firewall) is an AWS service for monitoring incoming traffic to secure a web application for suspicious activity like SQL injections.
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