Hi Everyone!
Our development team uses Unlayer to bind pictures/images from one (source) website onto another (target) website via iframe. Unfortunately, Unlayer cannot work with source websites behind a Sophos UTM. Every other source works fine.
The source website is behind our Sophos UTM firewall and published through the WAF. Even if I deactivate all firewall profile features Unlayer is not working. But if I just create a DNAT rule from internet-https to webserver-https it starts working. As this negates all security features of the UTM this is no solution for us.
The error message we receive form Unlayer is "ERR_CONTENT_DECODING_FAILED". The Response Header shows "Content-Encoding: gzip". When I activate the DNAT rule the error is gone and there is no "Content Encoding" in the response headers. I hope this is not too confusing. ;)
Any ideas why this is happening and how to resolve this? Is there a workaround?
Thanks!
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