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description=Create rules that examine incoming HTTP traffic against a set of powerful filters to block, challenge, log, or allow matching requests.;

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create an api shield rule cloudflare firewall rules docs 2 captures 25 nov 2020 02 mar 2021 feb mar apr 02 2020 2021 2022 success fail about this capture timestamps the wayback machine http web archive org web 20210302212254 https developers cloudflare com firewall cf dashboard create api shield rule this app works best with javascript enabled skip to content cloudflare docs logomark cloudflare docs cloudflare firewall logo firewall navigation menu icon open external link cloudflare docs logomark cloudflare docs cloudflare firewall logo firewall dropdown icon firewall menu cloudflare homepage welcome expand about about fields and expressions actions order and priority rules lists api shield collapse manage rules in the dashboard manage rules in the dashboard create edit and delete rules edit rule expressions preview rules expand use rules lists use rules lists manage lists manage list items ip addresses use lists in expressions create an api shield rule expand manage rules via the apis manage rules via the apis expand firewall rules api firewall rules api json object endpoints post example get examples put examples delete examples expand cloudflare filters api cloudflare filters api what is a filter json object endpoints post example get examples put examples delete examples expression validation expand rules lists api rules lists api json object endpoints call sequence expand common use cases common use cases block microsoft exchange autodiscover requests block requests based on ip reputation challenge bad bots exempt partners from hotlink protection require a specific cookie require a valid hmac token require a valid client certificate require specific http headers require specific http ports site administration require known ip addresses stop r u dead yet r u d y attacks update firewall rules for customers or partners expand firewall rules language firewall rules language fields operators grouping symbols values functions expand rulesets beta rulesets beta view rulesets view root rulesets configure root rulesets deploy rulesets expand work with custom rulesets work with custom rulesets create a custom ruleset add rules to a custom ruleset deploy a custom ruleset from your root ruleset expand work with managed rulesets work with managed rulesets deploy a managed ruleset override a managed ruleset expand workflow examples workflow examples set wordpress rules to block enable only joomla rules enable only selected rules deploy a managed ruleset with ruleset category and rule overrides deploy managed and custom rulesets expand rulesets api rulesets api json object endpoints get examples post example put example known issues and faq search icon depiction of a magnifying glass github icon visit firewall on github light theme icon depiction of a sun dark theme icon depiction of a moon set theme to dark d top use the api shield rule interface review your rule in the expression builder manage rules in the dashboard create an api shield rule use the api shield interface in the cloudflare dashboard to create a firewall rule that requires requests to your api or web application to present a valid client certificate before you can create an api shield rule you must do the following enable mutual transport layer security mtls for a host external link icon open external link in your zone create a client certificate external link icon open external link important you can only use api shield with a certificate authority ca that is fully managed by cloudflare cloudflare generates a unique ca for each zone if you need to use a different ca contact a cloudflare customer success manager after you have created your api shield rule configure your mobile app or iot device external link icon open external link to use your cloudflare issued client certificate use the api shield rule interface to create an api shield rule in the cloudflare dashboard follow these steps log in to your cloudflare account home page and click the zone containing the host you want to protect with api shield the cloudflare dashboard displays click the firewall app the firewall overview displays click the firewall rules tab the firewall rules card displays click create api shield rule the api shield rule dialog displays enter a descriptive identifier for your api shield rule in the rule name input to select the hosts you want protect with you api shield rule use the hostname input by default all available hosts are listed only hosts in the zone you selected in step 1 and for which you enable mtls external link icon open external link are available to remove a host from the rule click the associated x icon to create your rule and make it active click deploy the api shield rule dialog closes and the firewall rules card displays with your new rule in the list once you have deployed your api shield rule configure your mobile app or iot device external link icon open external link to use your cloudflare issued client certificate review your rule in the expression builder to review your api shield rule in the firewall rules expression builder click the wrench icon associated with your rule the edit firewall rule dialog displays and the expression builder s visual interface renders your api shield rule note expression preview your api shield rule includes a compound expression formed from two simple expressions joined by the and operator the first expression uses the http host field combined with the in operator to capture the hosts your api shield rule applies to the second expression not cf tls_client_auth cert_verified returns true when a request to access your api or web application does not present a valid client certificate because the action for your rule is block only requests that present a valid client certificate can access the specified hosts edit on github external link icon open external link updated 15 hours ago