R3303-HP 6600/HSR6600 Routers Security Configuration Guide

478
Analysis
The number of URL address filtering entries, URL parameter filtering entries, Java blocking suffix keywords,
or ActiveX blocking suffix keywords has reached the upper limit.
Solution
If necessary, remove some configured entries or keywords before adding new ones.
Invalid characters are present in the configured parameter
Symptom
When you configure a URL address filtering entry or URL parameter filtering entry, the system displays a
character error message.
Analysis
A URL address filtering entry can contain only 0 to 9, a to z, A to Z, dot (.), hyphen (-), underline (_), and
wildcards caret (^), dollar sign ($), ampersand (&), and asterisk (*). A URL parameter filtering entry can
contain only 0 to 9, a to z, A to Z, wildcards caret (^), dollar sign ($), ampersand (&), and asterisk (*),
and other ASCII characters with values between 31 and 127.
Solution
Make sure that all entered characters are valid.
Invalid use of wildcard
Symptom
When you configure a URL address filtering entry or URL parameter filtering entry, the system prompts
you that the wildcards are not used correctly.
Analysis
The wildcards for URL address filtering entries and those for URL parameter filtering entries have different
usage restrictions:
Table 46 Wildcards for URL address filtering entries
Wildcard Meanin
g
Usa
g
e
g
uidelines
^
Matches website addresses starting
with the keyword
It can be present once at the beginning of a
filtering entry.
$
Matches website addresses ending
with the keyword
It can be present once at the end of a filtering
entry.
&
Stands for a valid character other
than a dot (.)
It can be present multiple times at any position
of a filtering entry, consecutively or
inconsecutively, but cannot be used together
with an asterisk (*).
*
Stands for any number of valid
characters and spaces excluding a
dot (.)
It can be present once at the beginning or in
the middle of a filtering entry. It cannot be at
the end and cannot be used next to a caret (^)
or a dollar sign ($).