Symantec Security 5600 Series, Security 5400 Series,Clientless VPN 4400 Series, Руководство администратора

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420 Enabling remote access with clientless VPN
Using rules to allow or deny clientless VPN access
Building regular expressions for advanced rules
This section provides examples to demonstrate the power and versatility of using regular expressions.
Generally, intricacies arise when formulating the path element, and therefore, Table 11-3 shows
variations of the path element. Other elements, such as host name, can be formulated using similar
methods. Not all possible or incorrect matches are included.
Table 11-3 Path element variations
Path Description Examples with possible
path match Examples with no match
“ ” (blank space) matches any
possible path. “ ”
a
dir
salesNW/projects.rtf
^
$ Matches an empty string only. “ ” dir, a, /subdir/status.doc
dir Matches any path with the
string dir in it. dir
directory
abc/subdirectory/subsub
dir/file.txt
a, /subdi, sub/text.pdf
^
dir Matches any path that begins
with dir. dir
directory
dir/file.txt
/dir, subdir/dir
dir$ Matches paths ending with dir
only. dir
subdir
abc/subdir
directory, /dirt
^
dir$ Matches dir only. dir directory, /dirt
^
.$ Matches any single character
string. a
/
X
xyz, /s, sales/status.doc
^
\$$ Matches $ only. $ $$, $$$, $/Symantec.pdf
^
.*$ Matches any possible path. a
/dir
/dir/file.txt
^
a*$ Matches any path that is filled
with any number of the
character a. a
aa
aaaaaaaaaaa
/aaaa, abc, /sales, doc
^
\.*$ Matches a string filled with
any number of “.” .
........
a, aa
^
/dir/subdir*$ Matches a string beginning
with /dir/subdi followed by any
number of the character r. /dir/subdi
/dir/subdirrrrrr
/dir/subdirrrrrrrrrrrrrrrr
dir/subdi, dir/subdir