Cisco Cisco Web Security Appliance S380 Guía Del Usuario
8-21
Cisco AsyncOS 8.0.6 for Web User Guide
Chapter 8 Classify URLs for Policy Application
Regular Expressions
In the following example, the regular expression matches files ending in
.exe
,
.zip
, and .
bin
in the
downloads
directory.
/downloads/.*\.(exe|zip|bin)
Avoid using regular expressions strings that are redundant because they can cause higher CPU usage on
the Web Security appliance. A redundant regular expression is one that starts or ends with “.*”.
the Web Security appliance. A redundant regular expression is one that starts or ends with “.*”.
Note
You must enclose regular expressions that contain blank spaces or non-alphanumeric characters in
ASCII quotation marks.
ASCII quotation marks.