Appendix A: Glossary
273
response
transformation
a modification of the object being returned. This modification can be to either the
protocol headers associated with the response sent to the client, or a transformation of
the object contents itself, such as the removal of active content from HTML pages.
rule A list of triggers and property settings, written in any order. A rule can be written on
multiple lines using a line continuation character.
If the rule matches (all triggers evaluate to true), all properties will be set as specified. At
most one rule per layer will match. Layer evaluation terminates on the first rule match.
section A way of grouping rules of like syntax together. Sections consist of a section header that
defines the section type, followed by policy rules.The section type determines the
allowed syntax of the rules, and an evaluation strategy.
transaction An encapsulation of a request to the ProxySG together with the resulting response that
can be subjected to policy evaluation.
The version of policy current when the transaction starts is used for evaluation of the
complete transaction, to ensure consistent results.
trigger A named test of some aspect of a transaction. CPL triggers have the form
trigger_name=value.
Triggers are used in rules, and in condition definitions.
Visual Policy Manager
file
A file created and stored on an individual ProxySG by the Visual Policy Manager. The
VPM allows you to create policies without writing CPL directly. Since the VPM supports
a subset of CPL functionality, you might want to supplement any policy in a VPM file
with rules in the Local policy file. If you have a new ProxySG, the VPM file is empty.
VPM files can be shared among various ProxySG appliances by copying the VPM files to
a Web server and then using the Management Console or the CLI from another ProxySG
to download and install the files.