Cisco 500 Series, Configuration Manual

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Cisco Security Appliance Command Line Configuration Guide
OL-12172-03
Chapter 25 Configuring Application Layer Protocol Inspection
HTTP Inspection
hostname(config-cmap)# match [ not ] request args regex [ regex_name | class
regex_class_name ]
Where the regex_name is the regular expression you created in Step 1 . The class regex_class_name
is the regular expression class map you created in Step 2 .
e. (Optional) To match text found in the HTTP request message body or to match traffic that exceeds
the maximum HTTP request message body length, enter the following command:
hostname(config-cmap)# match [ not ] request body { regex [ regex_name | class
regex_class_name ] | length gt max_bytes }
Where the regex regex_name argument is the regular expression you created in Step 1 . The class
regex_class_name is the regular expression class map you created in Step 2 . The length gt
max_bytes is the maximum message body length in bytes.
f. (Optional) To match text found in the HTTP request message header, or to restrict the count or length
of the header, enter the following command:
hostname(config-cmap)# match [ not ] request header {[ field ]
[ regex [ regex_name | class regex_class_name ]] |
[ length gt max_length_bytes | count gt max_count_bytes ]}
Where the field is the predefined message header keyword. The regex regex_name argument is the
regular expression you created in Step 1 . The class regex_class_name is the regular expression class
map you created in Step 2 . The length gt max_bytes is the maximum message body length in bytes.
The count gt max_count is the maximum number of header fields.
g. (Optional) To match text found in the HTTP request message method, enter the following command:
hostname(config-cmap)# match [ not ] request method {[ method ] |
[ regex [ regex_name | class regex_class_name ]]
Where the method is the predefined message method keyword. The regex regex_name argument is
the regular expression you created in Step 1 . The class regex_class_name is the regular expression
class map you created in Step 2 .
h. (Optional) To match text found in the HTTP request message URI, enter the following command:
hostname(config-cmap)# match [ not ] request uri { regex [ regex_name | class
regex_class_name ] | length gt max_bytes }
Where the regex regex_name argument is the regular expression you created in Step 1 . The class
regex_class_name is the regular expression class map you created in Step 2 . The length gt
max_bytes is the maximum message body length in bytes.
i. Optional) To match text found in the HTTP response message body, or to comment out Java applet
and Active X object tags in order to filter them, enter the following command:
hostname(config-cmap)# match [ not ] response body {[ active-x ] | [ java-applet ] |
[ regex [ regex_name | class regex_class_name ]] | length gt max_bytes }
Where the regex regex_name argument is the regular expression you created in Step 1 . The class
regex_class_name is the regular expression class map you created in Step 2 . The length gt
max_bytes is the maximum message body length in bytes.
j. (Optional) To match text found in the HTTP response message header, or to restrict the count or
length of the header, enter the following command:
hostname(config-cmap)# match [ not ] response header {[ field ]
[ regex [ regex_name | class regex_class_name ]] |
[ length gt max_length_bytes | count gt max_count ]}