Blue Coat SURF-500-999-1YR 用户手册
SurfControl Web Filter v5.5
Administrator’s Guide
79
R
ULES
A
DMINISTRATOR
Allowance Objects
7
The 10 MB Allowance object has the following default properties:
•
Type of Allowance - Volume
•
Allowance Limit - 10240 KB
30 M
INUTE
T
IME
O
BJECT
Right-click the object and select Properties. The 30 Minute Allowance object has the following default
properties:
properties:
Figure 7-20 30 Minute object properties
About Browse Time Sensitivity
Browse time sensitivity refers to the maximum amount of time Web Filter presumes a user to be actively
engaged with a site. Browse time sensitivity is also used to offset the uncertainty about how much actual
time a user is engaged in browsing. By default, browse time sensitivity is set to three minutes.
engaged with a site. Browse time sensitivity is also used to offset the uncertainty about how much actual
time a user is engaged in browsing. By default, browse time sensitivity is set to three minutes.
Browse time sensitivity comes into play every time a user launches a browser. However, the way in which
Web Filter attributes browse time sensitivity depends on whether the browsing takes place as a stand-
alone occurrence or in a sequence of connections.
Web Filter attributes browse time sensitivity depends on whether the browsing takes place as a stand-
alone occurrence or in a sequence of connections.
Note:
If the first file a user attempts to download exceeds the volume limit, this file will still be
downloaded. All subsequent download attempts will be blocked. Web Filter can only judge the
size of a file once it has been downloaded.
size of a file once it has been downloaded.
Table 7-5 30 Minute object properties
Type of Allowance
Allowance Limit
Time
30 min
Browse Time Sensitivity
3 min