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Transparent Proxy and ARM > Transparent interception strategies > Transparent interception with WCCP v2 devices > Configuring service groups on the WCCP device
Configuring service groups on the WCCP device
Help | Content Gateway | v8.5.x
WCCP uses service groups to specify the traffic that is redirected to Content Gateway (and other devices).
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A service group can intercept one or more protocols on one or more ports.
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Service groups are assigned a unique integer identifier (ID) from 0 to 255.
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Service groups IDs are user defined; they do not have a default port or traffic type.
The following table illustrates a set of service group definitions that are often found in networks. If you are configuring for IP spoofing, see the table in Content Gateway IP spoofing for common reverse service group IDs.
Service ID
Port
Traffic Type
0
80
HTTP
5
21
FTP
70
443
HTTPS (when HTTPS support is enabled)
Service groups must be configured on the router and in Content Gateway.
The best practice is to configure the routers first and Content Gateway second.
Follow the instructions in your router documentation for specifics, but in general:
1.
To see what has been configured on the router for WCCP, enter:
show running-config | include wccp
2.
To enable WCCP v2, enter:
ip wccp version 2
3.
If you used another proxy cache with your router prior to Content Gateway, disable the service ID that was previously used. For example, if you have a Cisco router, disable the service ID web-cache as follows:
no ip wccp web-cache
4.
Specify the service group IDs you will use with Content Gateway. For the specific commands to use, see your router documentation.
You must configure each service group supported by the router individually. You cannot configure a router globally.

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