> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/scan-fix-and-prevent/scan-with-snyk/snyk-api-web/start-scanning/overview-scan-access-and-connectivity/configure-ips-in-wafs.md). # Configure IPs in WAFs How to allow Snyk API and Web scanner IPs in your WAF Snyk API & Web uses specific public IP addresses to scan your targets. If you use a Web Application Firewall (WAF) in front of your target, it can block scan requests and cause the scan to fail. To avoid that, configure the WAF to allow Snyk IP addresses. For a list of Snyk IP addresses, visit [Scanner IP address](/scan-fix-and-prevent/scan-with-snyk/snyk-api-web/start-scanning/overview-scan-access-and-connectivity/scanner-ip-address.md). ## Configure Cloudflare WAF Cloudflare provides documentation explaining how to configure access rules for its WAF. There is an overview of [IP Access rules](https://developers.cloudflare.com/waf/tools/ip-access-rules/), and the configuration steps are described in [Create an IP Access rule](https://developers.cloudflare.com/waf/tools/ip-access-rules/create/). When following these steps, use this information: * **IP, IP range, country name, or ASN** - Enter the Snyk IP address for your case. * **Action** - Select **Allow**. * **Zone** - To apply the rule only to the current zone, select **This website**. To create the rule in all zones of your Cloudflare account, select **All websites in account**. * **Notes** - Optionally, provide text identifying the rule. For example, "Snyk API & Web IP". After you create the rule, your target scans with Snyk run without being blocked by Cloudflare WAF. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.snyk.io/scan-fix-and-prevent/scan-with-snyk/snyk-api-web/start-scanning/overview-scan-access-and-connectivity/configure-ips-in-wafs.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.