Hi everyone. I'm new here and trying to get a handle on our security setup.
Our entire stack is on AWS (EC2, S3, ALB). We're currently using the AWS WAF that comes with our Application Load Balancer, but I keep hearing about Cloudflare's WAF being superior. Since we're 100% on AWS, does it make sense to even consider Cloudflare? Or is sticking with the native AWS WAF the simpler, more integrated choice?
I'm curious about real-world differences in:
- Ease of setup and rule management
- Performance impact
- Cost at our scale (moderate traffic, a few web apps)
Thanks in advance!
Still learning.
I'm a community manager for a SaaS company, our platform runs on AWS with an ALB and we've tested both WAFs in production. Right now we're using AWS WAF, but I ran a Cloudflare pilot for six months.
Here's how I'd break down the real differences:
1. **Setup and ongoing rule management**
AWS WAF setup is a series of manual steps in the console or CloudFormation, and rule management feels like editing a config file. Cloudflare's dashboard is significantly more intuitive for non-specialists; you can have a basic managed ruleset deployed in under 5 minutes. The downside is it's another control plane outside AWS.
2. **Performance impact on your AWS bill**
AWS WAF charges per rule and per million requests. For moderate traffic, this can be $20-50/month. Cloudflare's WAF is part of their Pro plan ($20/month per site). However, if you enable Cloudflare's proxy, your ALB will see traffic from Cloudflare IPs, which can reduce your data transfer out costs from AWS. In our case, that saved us about 15% on our AWS bill.
3. **Security efficacy and false positives**
Cloudflare's managed rule sets, especially their proprietary ones, updated faster during zero-day events we monitored. Their OWASP Core Rule Set tuning felt more straightforward. AWS's managed rules were effective but we spent more time tuning out false positives for our legacy app, often requiring custom rule writing.
4. **Lock-in and ecosystem fit**
You're 100% AWS. AWS WAF integrates with AWS Shield for DDoS, and logging to S3/CloudWatch is automatic. Investigations flow within one console. Adding Cloudflare introduces a separate DNS layer, SSL certificate management, and another place to check logs. For a small team, that context switching adds real overhead.
My pick is to stick with AWS WAF if your team is small and your apps are fairly standard. The integration and single-console benefit is real. Only consider Cloudflare if you're hitting scaling issues with the ALB, need more granular bot management, or want to optimize those data transfer costs. To decide, tell us your monthly AWS data transfer out cost and whether you have someone dedicated to security tuning.