How do I use AWS WAF to block specific file extension uploads?

1 Answers

Make a customized web access control list (web ACL) rule to examine the request BODY.
You will be creating a regex match condition within the rule. With the help of this regex pattern, you will be able to configure the rule to restrict various file extensions.
Make the rule action to BLOCK.
State the rule priority so that this custom rule will become a higher priority than any web ACL rule which can block this rule.
Validating the rule will successfully block the specific file extension.

Gautam Pattani
Sep 20, 2023

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