Facebook url sharing | attention Required! | Cloudflare

Attention Required! | Cloudflare
if you are on a personal connection, like at home, you can run an antivirus scan on your device to make sure it is not infected with malware.

I have read what I think is everything and I can not find a solution. When I turn off Cloudflare from the overview section, the issue goes away. When I turn on Cloudflare, the issue comes back.

The scraping information displays all Cloudflare security captcha portal information.

I made a custom page rule:

*site.com/news*
Security level: Essentially Off

I went into the firewall and allowed the attempt… nothing.

Something in Cloudflare is stopping people from sharing my url links from my site because again, when I turn Cloudflare off. It works.

My site is clean from malware and multiple sites have confirmed this, also my server IP is not on any blacklists.

Please advise.

Figured it out. I added firewall rules to allow AS32934 and AS63293 by whitelist.

1 Like

Hi @navydudesite,

Facebook documentation indicates that its crawler’s IPs are under AS32934.

https://developers.facebook.com/docs/sharing/webmasters/crawler/

By also allowing the other ASN, you may be accepting unwanted visitors.

Also, it would be safer to whitelist the ASN along with the User Agent, as the ASN may be used by many servers under FB organization, potentially including FB users.

For example:

(ip.geoip.asnum eq 32934 and http.user_agent eq "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)") or (ip.geoip.asnum eq 32934 and http.user_agent eq "facebookexternalhit/1.1") or (ip.geoip.asnum eq 32934 and http.user_agent eq "Facebot")

then Allow

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