Cisco Cisco Web Security Appliance S190 Mode D'Emploi
18-8
Cisco IronPort AsyncOS 7.7 for Web User Guide
Chapter 18 Understanding Application Visibility and Control
Controlling Bandwidth
•
User bandwidth limit. Define a limit for particular users on the network per application type. User
bandwidth limits traffic from web servers as well as traffic served from the web cache. You might
want to define user bandwidth limits to restrict the amount of traffic consumed by heavy usage users
to enforce acceptable use policies. For more information, see
bandwidth limits traffic from web servers as well as traffic served from the web cache. You might
want to define user bandwidth limits to restrict the amount of traffic consumed by heavy usage users
to enforce acceptable use policies. For more information, see
.
When both the overall limit and user limit applies to a transaction, the most restrictive option applies.
You can define bandwidth limits for particular URL categories by defining an Identity group for a URL
category and using it in an Access Policy that restricts the bandwidth.
category and using it in an Access Policy that restricts the bandwidth.
Note
Defining bandwidth limits only throttles the data going to users. It does not block data based on reaching
a quota. The Web Proxy introduces latency into each application transaction to mimic a slower link to
the server.
a quota. The Web Proxy introduces latency into each application transaction to mimic a slower link to
the server.
Configuring Overall Bandwidth Limits
The overall bandwidth limit affects the traffic between the Web Security appliance and web servers for
all users on the network.
all users on the network.
Step 1
Navigate to the Web Security Manager > Overall Bandwidth Limits page.
Step 2
Select the Limit to option.
Step 3
Enter the amount of traffic to limit in either Megabits per second (Mbps) or kilobits per second (kbps).
Step 4
Submit and commit your changes.
Configuring User Bandwidth Limits
You define user bandwidth limits by configuring bandwidth control settings on the Applications
Visibility and Control page of Access Policies. You can define the following types of bandwidth controls
for users in Access Policies:
Visibility and Control page of Access Policies. You can define the following types of bandwidth controls
for users in Access Policies:
•
Default bandwidth limit for an application type. In the Global Access Policy, you can define the
default bandwidth limit for all applications of an application type. For more information, see
default bandwidth limit for all applications of an application type. For more information, see
•
Bandwidth limit for an application type. In a user defined Access Policy, you can override the
default bandwidth limit for the application type defined in the Global Access Policy. You can
configure no bandwidth limit or a different bandwidth limit value. For more information, see
default bandwidth limit for the application type defined in the Global Access Policy. You can
configure no bandwidth limit or a different bandwidth limit value. For more information, see
.
•
Bandwidth limit for an application. In a user defined or Global Access Policy, you can choose to
apply the application type bandwidth limit or no limit (exempt the application type limit). You might
choose no bandwidth limit for an application to exempt the application from the bandwidth limit
established that application type. For more information, see
apply the application type bandwidth limit or no limit (exempt the application type limit). You might
choose no bandwidth limit for an application to exempt the application from the bandwidth limit
established that application type. For more information, see