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External vulnerability scanning
All you need to know about our scanners
Possible Scan InterferenceWhat is Possible Scan Interference (PSI) and how to fix it
What IPs do I need to add to my allowlist?Select your scan region for the exact IPs you need to allow for scanning of your targets
How do I add Intruder's IPs to my allowlist in Cloudflare?Allowlisting in Cloudflare isn't totally straightforward. Here's how to get around their restrictions on IP Access Rules.
Can Intruder Scan Single-Page Applications?How does Intruder fare when vulnerability scanning SPAs?
I need to add my web server as a target. Should I use the hostname or IP address?This article explains what to add as a target to ensure that your systems are covered
My websites are hosted behind Cloudflare. Will Intruder still work?This article explains how to set up Intruder to correctly scan web servers which are hosted behind Cloudflare
Will Intruder's scans damage my systems?Are Intruder's scans safe? Will scans cause downtime or disruption?
My servers are load balanced. What do I do?Whether your systems are load balanced via hardware or software, this article discusses best practise for scanning them.