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It is indeed something only the ISP can do. Reverse DNS authority is delegated per octet. For example for IPv4 address 185.54.92.1 the reverse DNS record name is 1.92.54.185.in-addr.arpa. That is part of the 92.54.185.in-addr.arpa zone. The holder of 185.54.92.0/24 is the one who maintains that zone. That will be your ISP. If your ISP doesn't let you provide ...
2
Based on https://httpd.apache.org/docs/2.2/mod/mod_ssl.html#sslprotocol:
All
This is a shortcut for "+SSLv2 +SSLv3 +TLSv1" or - when using OpenSSL 1.0.1 and later - "+SSLv2 +SSLv3 +TLSv1 +TLSv1.1 +TLSv1.2", respectively.
So first, there would be a need to know which OpenSSL version you use.
Let us rewrite your statements:
1) before OpenSSL 1.0.1:
...
1
I would recommend switching from iFrame to JavaScript widgets to write this content into other sites. Rather than give other sites code for an iFrame:
<iframe src="https://example.com/some-cool-content.html"></iframe>
you could give other sites a JavaScript snippet that would write that data into the page:
<script src="https://example.com/...
1
I think your logic is sound. If you only have access to the server providing the iframe content, I don't see how you can run a reverse proxy. I can see the client website going to for example, localhost:3000, and have nginx or something reroute that to your server, but without access to the client server I don't see how you can do that.
The only other idea ...
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