Cisco 6500 - Catalyst Series 10 Gigabit EN Interface Module Expansion, Руководство по настройке, Страница: 388 / 742

20-12
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
OL-20748-01
Chapter 20 Using Modular Policy Framework
Configuring Special Actions for Application Inspections (Inspection Policy Map)
Table 20-1 regex Metacharacters
Character Description Notes
. Dot Matches any single character. For example, d.g matches
dog, dag, dtg, and any word that contains those
characters, such as doggonnit.
( exp ) Subexpression A subexpression segregates characters from surrounding
characters, so that you can use other metacharacters on
the subexpression. For example,
d(o|a)g matches dog
and dag, but do|ag matches do and ag. A subexpression
can also be used with repeat quantifiers to differentiate
the characters meant for repetition. For example,
ab(xy){3}z matches abxyxyxyz.
| Alternation Matches either expression it separates. For example,
dog|cat matches dog or cat.
? Question mark A quantifier that indicates that there are 0 or 1 of the
previous expression. For example,
lo?se matches lse or
lose.
Note You must enter Ctrl+V and then the question
mark or else the help function is invoked.
* Asterisk A quantifier that indicates that there are 0, 1 or any
number of the previous expression. For example,
lo*se
matches lse, lose, loose, and so on.
+ Plus A quantifier that indicates that there is at least 1 of the
previous expression. For example,
lo+se matches lose
and loose, but not lse.
{ x } or { x ,} Minimum repeat quantifier Repeat at least x times. For example, ab(xy){2,}z
matches abxyxyz, abxyxyxyz, and so on.
[ abc ] Character class Matches any character in the brackets. For example,
[abc] matches a, b, or c.
[^ abc ] Negated character class Matches a single character that is not contained within
the brackets. For example,
[^abc] matches any character
other than a, b, or c. [^A-Z] matches any single
character that is not an uppercase letter.
[ a - c ] Character range class Matches any character in the range. [a-z] matches any
lowercase letter. You can mix characters and ranges:
[abcq-z] matches a, b, c, q, r, s, t, u, v, w, x, y, z, and so
does [ a-cq-z] .
The dash (-) character is literal only if it is the last or the
first character within the brackets:
[abc-] or [-abc] .
"" Quotation marks Preserves trailing or leading spaces in the string. For
example,
" test" preserves the leading space when it
looks for a match.
^ Caret Specifies the beginning of a line.
\ Escape character When used with a metacharacter, matches a literal
character. For example,
\[ matches the left square
bracket.