Specifications

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Cisco Internet Streamer CDS 2.0-2.3 Software Configuration Guide
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Chapter 4 Configuring Devices
Configuring the Service Engine
metafile (.asx file extension), Movie Streamer file, or Flash Media Streaming file, and to validate the
URL signature on incoming requests to the SE. For more information on creating service rules, see the
“Configuring Service Rules” section on page 4-15.
URL signature key authentication is implemented by using the generate-url-signature and
validate-url-signature rule actions that can be applied to specific rule patterns.
Note Movie Streamer and Flash Media Streaming support URL signing in Release 2.2. Flash Media
Streaming only supports the following actions: allow, block, and validate-url-signature.
Table 4-10 lists the rule patterns that support the use-icap-service rule action for directing requests that
require guaranteed bandwidth to the third-party policy server:
You can set the se-icap-service rule action for any of the rule patterns above. If the request matches the
parameters that you have set for the rule pattern, then the SE redirects the request to the third-party
policy server using ICAP services. However, you must make sure that your network is configured to
interoperate with the third-party policy server using ICAP services. You can set up the necessary ICAP
configurations from the ICAP Services page. See the “Configuring ICAP” section on page 4-19.
You can also use the rule pattern and rule action to generate URL signatures in the response for a valid
request for a Windows Media metafile. You can use the following rule patterns to filter out requests for
which you want to generate a URL signature key:
For the rule patterns mentioned above, you can set the following rule actions:
Table 4-10 Rule Patterns Supported for use-icap-service
Rule Pattern Description
url-regex Filters the request based on any regular expression n the URL.
domain Filters the request based on the domain name specified.
src-ip Filters the request based on the IP address of the source.
header-field user-agent Filters the request based on the user agent specified in the request header.
header-field referer Filters the request based on the referer in the request header.
header-field request-line Filters the request based on the request line in the request header.
Rule Pattern Description
url-regex Filters the request based on any regular expression in the URL.
domain Filters the request based on the domain name specified.
Rule Action Description
generate-url-signature Generates the URL signatures in the Windows Media metafile response
associated with pre-positioned content, based on the SE configuration
for the URL signature and this rule action.
validate-url-signature Validates the URL signature for a request by using the configuration on
your SE for the URL signature and allows the request processing to
proceed for this request