ProxySG Content Policy Language Guide
118
request.header.Referer.url=
Test if the URL specified by the Referer header matches the specified criteria. The basic
request.header.Referer.url= test attempts to match the complete Referer URL against a
specified pattern. The pattern may include the scheme, host, port, path and query components of the
URL. If any of these is not included in the pattern, then the corresponding component of the URL is
not tested and can have any value.
Specific portions of the Referer URL can be tested by applying URL component modifiers to the
trigger. In addition to component modifiers, optional test type modifiers can be used to change the
way the pattern is matched.
This trigger is unavailable if the Referer header is missing, or if its value cannot be parsed as a URL.
If the Referer header contains a relative URL, the requested URL is used as a base to form an absolute
URL prior to testing.
Syntax
request.header.Referer.url[.case_sensitive][.no_lookup]=prefix_pattern
request.header.Referer.url.domain[.case_sensitive][.no_lookup]=
domain_suffix_pattern
request.header.Referer.url.regex[.case_sensitive]=regular_expression
request.header.Referer.url.address=ip_address|subnet|subnet_label
request.header.Referer.url.extension[.case_sensitive]=[.]filename_extension
request.header.Referer.url.host[.exact][.no_lookup]=host
request.header.Referer.url.host.[prefix|substring|suffix][.no_lookup]=string
request.header.Referer.url.host.is_numeric=yes|no
request.header.Referer.url.host.no_name=yes|no
request.header.Referer.url.path[.case_sensitive]=/string
request.header.Referer.url.path[.substring|.suffix][.case_sensitive]=string
request.header.Referer.url.path.regex[.case_sensitive]=regular_expression
request.header.Referer.url.port={[low_port_number]..[high_port_number]
|exact_port_number}
request.header.Referer.url.query.regex[.case_sensitive]=regular_expression
request.header.Referer.url.scheme=url_scheme
where all options are identical to url=, except for the URL being tested. For more information, see
"url=" on page 137.
Discussion
The request.header.Referer.url= condition is identical to url=, except for the lack of a define
url condition and [url] or [url.domain] sections.
Layer and Transaction Notes
•Use in <Proxy>, <Cache>, and <Exception> layers.
• Applies to HTTP proxy transactions.
Examples
; Test if the Referer URL includes this pattern, and block access.