Content Type Filter

This filter blocks content based on the value of Content-Type HTTP response header.

Parameters

content_type

One or more content_type parameters define a set of content types this instance of the filter will block.

Here are some examples of common content types:

*/*	All content types. If this value is included, the filter is equivalent to Blacklist filter (blocks everything).
image/*	All image content types.
image/gif	GIF images.
image/jpeg	JPEG images.
image/png	PNG images.
application/x-shockwave-flash	Shockwave aminations.
text/*	All text content types.
text/html	HTML.
text/javascript	Javascript. If this value is included, the filter is equivalent to a simplified version of Script Filter, but will handle only external scripts (<script src="..."/>) and alow built-in scripts (<script>...</script>).

action

The action parameter specifies access blocking method.

Format:

action = disconnect
action = redirect:URL

• disconnect – Drop connection
• redirect:URL – Redirect to URL.
  If URL is not specified, Foxy will select an approriate internal URL automatically. Currently it may be null.html, null.gif, null.swf, or null.js.
  Those names are handled internally.
  If URL is specified, the resource it points to should have content type comaptible with those defined by content_type parameters. For example, it doesn't make sense to redirect image requests to HTML URLs, but it's usually OK to redirect GIF images to JPEG images. Foxy will detect some incorrect redirect attempts and redirect to appropriate internal URLs instead (like null.gif).

See also Common Filter Parameters.

Example

type = Content Type Filter
name = Shockwave Blocker
enabled = true
logging = true
include = *
action = redirect
content_type = application/x-shockwave-flash

Web UI equivalent: