Cisco Cisco ACE Application Control Engine Module
5
Release Note for the Cisco Application Control Engine Module
OL-26644-03
New Software Features in Version A5(3.0)
•
The Hex data entered must be a single string consisting of alphanumeric within the range of 0-9, a-f
or A-F.
or A-F.
•
The Hex data configured will be stored and shown as ASCII text in the show probe detail and show
running-config CLI commands.
running-config CLI commands.
•
For send-hex-data <data>, the conversion from Hex ASCII to Binary will occur when the probe
data is sent out.
data is sent out.
•
For expect hex-regex <data>, the configured regex hex data is converted to binary data at the time
of parsing the server response against the configured regex hex data
of parsing the server response against the configured regex hex data
•
If send-hex-data is configured then expect hex-regex should be configured and if send-data is
configured then expect regex should be configured.
configured then expect regex should be configured.
•
Data strings should be even-numbered length both in send-hex-data and in expect hex-regex
•
Do not include white space
•
Only specify hex values
•
expect hex-regex ae5530da offset 2 behavior will be same as expect regex aedsfte offset 2.
•
User should take care of expect regex configuration For example if send-hex-data is configured
then expect hex-regex should be configured and if send-data is configured then expect regex
should be configured.
then expect hex-regex should be configured and if send-data is configured then expect regex
should be configured.
Enhancements in HTTP Content Rewrite
The HTTP content rewrite feature provides the capability to rewrite configured regex patterns in the
HTTP response data. This feature has been enhanced to introduce the rewrite functionality to support
rewrite for HTTP content in server to client direction.
HTTP response data. This feature has been enhanced to introduce the rewrite functionality to support
rewrite for HTTP content in server to client direction.
The feature uses a rule-based rewriting engine (based on a regular-expression parser) to rewrite
requested patterns on the fly. Content rewrite will provide a flexible and powerful content manipulation
mechanism. URL content rewrite feature is effectively a search on the full content for each HTTP
response in range and replace a match of regex search pattern with the defined regex replace pattern.
requested patterns on the fly. Content rewrite will provide a flexible and powerful content manipulation
mechanism. URL content rewrite feature is effectively a search on the full content for each HTTP
response in range and replace a match of regex search pattern with the defined regex replace pattern.
New CLI Commands
The following content rewrite command has been added newly as part of HTTP modify action list
action-list type modify http <Action list name>
content rewrite response content-string <content_regex_pattern> replace <new_string>
Example:
action-list type modify http data_rewrite
content rewrite response content-string "text" replace "data"
Note
Only one rewrite configuration is allowed per action list.