Cisco Cisco Web Security Appliance S370 사용자 가이드
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Cisco IronPort AsyncOS 7.0 for Web User Guide
OL-23079-01
Chapter 16 URL Filters
Regular Expressions
Note
To match the literal version of any of the special characters, the character must be
preceded by a backslash “\”. For example, to exactly match a period “.” the regular
expression must use “\.” as in “\.example\.com”. However, the appliance does not
support using a backward slash to escape a forward slash. If you need to use a
forward slash in a regular expression, type the forward slash without a backward
slash.
preceded by a backslash “\”. For example, to exactly match a period “.” the regular
expression must use “\.” as in “\.example\.com”. However, the appliance does not
support using a backward slash to escape a forward slash. If you need to use a
forward slash in a regular expression, type the forward slash without a backward
slash.
[ ]
Matches the characters or digits that are enclosed within the
brackets.
brackets.
For example:
[a-z] matches any character between a and z
[r-u] matches any of the characters r, s, t, or u
[0-3] matches any of the single digits 0, 1, 2, 3
{ }
Specifies the number of times to match the previous pattern.
For example:
D{1,3} matches one to three occurrences of the letter D
( )
Group characters in a regular expression.
For example:
(abc)* matches abc or abcabcabc
“...”
Literally interprets any characters enclosed within the quotation
marks.
marks.
\
Escape character.
Table 16-6
Regular Expression Character Descriptions (continued)
Character
Description