Firewall Ferret
Summary: PortSwigger's BApp Store lists Firewall Ferret, a Burp Suite extension by Anthony Hanel, version 1.3.0, last updated 23 April 2026. The extension lets a tester manually insert junk data and adds junk data to Active Scans by duplicating each scan check, based on the premise that WAFs only scan up to a certain amount of data per request.
What's compelling: The tool exists because WAFs only inspect a limited amount of data per request, so anything past that limit can pass unscanned - a gap a tester with this extension can probe directly against your defenses.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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