AWS Web Application Firewall (WAF)

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The AWS Web Application Firewall (WAF) is a critical element of AWS Security.  Learn how to do it right!

  • AWS WAF & Shield

    Origin Protection with AWS WAF & Shield

    Amazon has been steadily improving their CloudFront CDN offering with WAF (Web Application Firewall) capabilities. This is a great feature, however it's ineffective if origin servers can be attacked directly, bypassing CloudFront. With a little extra work, access to the origin can be restricted. The solution is to add a secret header value at the edge, and configure the load balancer to block requests that are missing this secret. This is necessary because CloudFront distributions are not associated with security groups, nor are fixed IPs available (unlike higher-priced competitors like Kona Site Shield).

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