The Accept request-header field can be used to specify certain media types which are acceptable for the response.
Accept headers can be used to indicate that the request is specifically limited to a small set of desired types, as in the case of a request for an in-line image.
For example, web page A and web page B are added to the internal URL filter, but web page C is not.
(This change can be done after implementation.) Domains or URLs that are not part of those defined domains and URLs are considered referrers.Near the bottom of the list, referrers constantly rise onto or drop off of the list, so the totals for those referrers are approximations.The 25 referrers at the top of the list of 75 referrers may rise and fall within the list, but they rarely drop off of the list altogether, so the totals for those referrers typically are more reliable.A popular Max CDN content security feature is the HTTP Referer Whitelist, a hotlinking prevention tool.It provides an adequate amount of content security in most cases, but when referers differ by cache location, you may need more control over whitelisting referers than the HTTP Referer Whitelist offers.This section defines the syntax and semantics of all standard HTTP/1.1 header fields.