Cisco Wide Area Application Engine 612 Manual de usuario descargar pdf (Pagina 23)

Interception Techniques and Protocols 97

This example uses a redirect list to allow WCCPv2 to intercept and redirect SMTP trafﬁc

only on port 25.

Service Group Placement

The placement of service groups 61 and 62 should not be overlooked in your deployment.

The placement refers to which IOS interfaces are conﬁgured with service group 61 and

which interfaces are conﬁgured with service group 62. In most environments, service

group 61 should be conﬁgured on the client-facing interfaces. For example, when deploying

WCCPv2 on a remote-ofﬁce WAN router, service group 61 is conﬁgured to intercept a

client request. Conﬁguring group 61 inbound on the router’s LAN interface or outbound on

the router’s WAN interface accomplishes this. Figure 4-11 shows an example of conﬁguring

service group 61 inbound on the router’s LAN interface.

Figure 4-11 WCCP Service Group 61 Placement

Example 4-11 WCCP Redirect List Using Application Ports

access-list 101 permit tcp any any eq 25

access-list 101 permit tcp any eq 25 any

access-list 101 deny ip any any

ip wccp 61 redirect-list 101

ip wccp 62 redirect-list 101

WAN

interface FastEthernet0/0.201

encapsulation dot1Q 201

ip address 10.88.81.17 255.255.255.240

ip wccp 61 redirect in

WAE

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Cisco Wide Area Application Engine 612 Manual de usuario Pagina 23