Cloudflareでのオリジン隠蔽

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Mailgun leaking server's real IP behind Cloudflare

Mailgun is leaking my DigitalOcean server IPs via emails deployed for Discourse which is resulting in repeated DDoS attacks. Received: from localhost.localdomain (sposting.com [**REAL IP HERE**]) by mxa.mailgun.org with ESMTP id 78c1220.7fe02c20b530-smtp-out-n03; Wed, 15 Mar 2017 01:30:08 -0000 (UTC) No DDoSers have discovered this yet. Additionally, a security researcher just pasted me the following information and told me it was pulled using “linux dig” IP address **REAL IP HERE** Reverse …

Discourse Link previews through a proxy server?

I keep my forum’s server behind cloud flare due to a large amount of attacks against the site. The link previews and emails can leak the server’s backend IP Address. The email issue was resolved by setting up a SMTP relay that strips headers (if the user pulls email headers to get the IP, they get the relay and not the forum’s IP). Is there a way to make the link previews go through a proxy server?