CloudFlare provides solutions to enhance website performance and security, improving site speed and protecting against threats.
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cf_use_ob
The cookie cf_use_ob informs Cloudflare of the need to retrieve the requested resource from the Always Online cache on the specified port. Applicable values: 0, 80, and 443. The cookies cf_ob_info and cf_use_ob are persistent cookies that expire after 30 seconds.
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__cfwaitingroom
The cookie __cfwaitingroom is used solely for tracking visitors accessing the host and path with the waiting room enabled for the zone. Visitors using a browser that does not accept cookies cannot visit the host and path combination while the waiting room is active.
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cf_chl_rc_i
These cookies are intended for internal use, allowing Cloudflare to identify production issues for clients.
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cf_chl_rc_ni
These cookies are intended for internal use, allowing Cloudflare to identify production issues for clients.
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cf_chl_rc_m
These cookies are intended for internal use, allowing Cloudflare to identify production issues for clients.
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__cfruid
Used by Cloudflare's network content to identify trusted web traffic.
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__cf_bm
Cloudflare's bot management products identify and mitigate automated traffic to protect your site from malicious bots. Cloudflare sets the __cf_bm cookie on end-user devices that access client sites protected by bot management or bot-fighting mode. The __cf_bm cookie is necessary for the proper functioning of these bot management solutions.
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__cflb
When session affinity is enabled through Cloudflare's load balancer, Cloudflare sets the __cflb cookie with a unique value in the first response to the client's request. Cloudflare directs future requests to the same origin, optimizing the use of network resources. In the event of a failure, Cloudflare sets a new __cflb cookie to route future requests to the backup pool.
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_cfuvid
The _cfuvid cookie is set only when the site uses this option in the Rate Limiting Rule and is used solely to allow Cloudflare's WAF to distinguish individual users who share the same IP address.
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cf_clearance
Whether the CAPTCHA challenge or the JavaScript-based challenge has been solved.
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__cfseq
Sequence rules use cookies to track the order of requests made by the user and the time between requests, making them available through Cloudflare Rules. This allows you to write rules that match valid or invalid sequences. The specific cookies used to verify sequences are called sequence cookies.
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cf_ob_info
The cf_ob_info cookie provides information about: The HTTP status code returned by the origin web server. The Ray ID of the original failed request. The data center serving the traffic.
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