H3C Technologies H3C SecPath F1000-E - Manual (Page 97)

89
Figure 94 Content filtering statistics
Configuration guidelines
1. Wildcard usage in URL hostname filtering keywords:
{
The caret (^) matches the beginning of the string. It can be used only once in a keyword and
must be at the beginning.
{
The dollar sign ($) matches the end of the string. It can be used only once in a keyword and must
be at the end.
{
The ampersand sign (&) matches a single character other than dot (.) and space. It can be used
for multiple times in a keyword, consecutively or non-consecutively. It can appear at any
position of a keyword, but cannot be used next to *.
{
The asterisk (*) matches any number of characters excluding dot (.). It can be used only once in
a keyword and must be at the beginning or in the middle. It cannot be used at the end or next
to ^ or $.
{
A keyword with ^ at the beginning or $ at the end indicates an exact match. For example,
keyword ^webfilter matches website addresses starting with webfilter (such as webfilter.com.cn)
or containing webfilter at the beginning of a string after a dot (such as cmm.webfilter-any.com).
Keyword ^webfilter$ matches website addresses containing standalone word webfilter like
www.webfilter.com; it does not match website addresses like www.webfilter-china.com.