Administration Guide

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Restricting user access to media content in the BlackBerry Browser

You can use standard definitions for MIME media types so that you can restrict the media types that the BlackBerry® MDS Connection Service can send to the BlackBerry® Browser and other applications on BlackBerry devices.

For more information about MIME media types, visit www.iana.org.

Prevent users from accessing specific media types

You can configure the BlackBerry® MDS Connection Service instances in your organization's environment to prevent users from accessing every format of a media type (for example, video), or a specific format of a media type (for example, .mp3), using the BlackBerry® Browser and other applications on a BlackBerry device.
  1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view.
  2. Click MDS Connection Service.
  3. Click Edit component.
  4. In the Media content type field, type the media type and subtype using standard definitions for MIME media types. Use the format <type>/<subtype>.
  5. In the Disallow content drop-down list, click Yes.
  6. Click the Add icon.
  7. Click Save all.
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Configure download limits for media content types

You can configure the BlackBerry® MDS Connection Service instances in your organization's environment to limit the size of media content that BlackBerry device users can download to BlackBerry devices during each connection. Each request for data that the device makes to the BlackBerry MDS Connection Service is a connection. If you do not configure a limit for media content types, the default values apply.
Before you begin: For more information about MIME media types, visit www.iana.org/assignments/media-types.
  1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view.
  2. Click MDS Connection Service.
  3. Click Edit component.
  4. In the Media content type field, type the media type and subtype using standard definitions for MIME media types. Use the format <type>/<subtype>. You can substitute an asterisk (*) to represent all types or subtypes except for the types you have already configured. Some examples of entries for the Media content type field include application/msword, application/pdf, video/mpeg, application/*, image/*, */*.
  5. In the Maximum KB/Connection field, type the maximum size (in KB) of content that a user can download to the device, during each connection to the BlackBerry MDS Connection Service.
  6. In the Disallow content drop-down list, click No.
  7. Click the Add icon.
  8. Click Save all.
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Default download limits for media content types

BlackBerry® device users can only download a specific amount of media content to BlackBerry® devices with each connection. You can configure a limit in the BlackBerry Administration Service. If you do not configure a limit, the default limit applies. The following table lists the default values.

There is no limit for the amount of media content that users can download using HTTP POST.

MIME type

Maximum number of bytes per connection (KB)

application/msword

2048

application/pdf

2048

application/vnd.ms-excel

2048

application/vnd.ms-powerpoint

2048

application/vnd.oma.drm.message

5120

application/vnd.oma.dm.message

5120

multimedia types such as audio and video

32,768

other

2048

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