Cisco Cisco Web Security Appliance S190 Guía Del Usuario
Chapter 25 Configuring Network Settings
Configuring Transparent Redirection
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Cisco IronPort AsyncOS 7.0 for Web User Guide
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Standard service. The standard service is also known as a well known
service because the characteristics of it are known by both WCCP routers and
the appliance. It redirects traffic on port 80. It is identified as the “web-cache”
service.
service because the characteristics of it are known by both WCCP routers and
the appliance. It redirects traffic on port 80. It is identified as the “web-cache”
service.
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Dynamic service. Dynamic services are any other service a web proxy
creates, but the web proxy must describe the components of the service group
to the router. AsyncOS supports the creation of any dynamic service you
choose to define. To create a dynamic service, you must provide the service
ID number, port numbers, and specify whether to redirect packets based on
the destination or source port and whether to distribute packets based on the
client or server address.
creates, but the web proxy must describe the components of the service group
to the router. AsyncOS supports the creation of any dynamic service you
choose to define. To create a dynamic service, you must provide the service
ID number, port numbers, and specify whether to redirect packets based on
the destination or source port and whether to distribute packets based on the
client or server address.
The Web Cache Communication Protocol allows 257 different service IDs.
AsyncOS allows you to create a dynamic WCCP service for each possible service
ID. However, in typical usage, most users create one or two WCCP services,
where one is a standard service and the other a dynamic service.
AsyncOS allows you to create a dynamic WCCP service for each possible service
ID. However, in typical usage, most users create one or two WCCP services,
where one is a standard service and the other a dynamic service.
When you create a WCCP service of any type, you must also specify the following
information:
information:
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Assignment method. For more information, see
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Forwarding and Return method. For more information, see
If you enable IP spoofing on the appliance, you must create two WCCP services.
For more information, see
For more information, see
Working with the Assignment Method
WCCP defines the assignment method as the method by which redirected packets
are distributed between web proxies. In this case, between one or more Web
Security appliances. The assignment method determines how the router performs
load balancing of packets among multiple Web Security appliances.
are distributed between web proxies. In this case, between one or more Web
Security appliances. The assignment method determines how the router performs
load balancing of packets among multiple Web Security appliances.
You configure the assignment method for a WCCP service in the Load-Balancing
Method field under the Advanced section when you create or edit a WCCP
service.
Method field under the Advanced section when you create or edit a WCCP
service.
You can configure WCCP services to use either of the following assignment
methods:
methods: