Cisco S695F Handbuch "Erste Schritte - Seite 5

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Plan the Installation

Decide how you are going to configure the Cisco Web Security Appliance within your network.

The Cisco Web Security Appliance is typically installed as an additional layer in the network between

clients and the Internet. Depending on how you deploy the appliance, you may or may not need a Layer

4 (L4) switch or a WCCP router to direct client traffic to the appliance.

Deployment options include:

•

See

Note

appliance.

To monitor true client IP addresses, the L4 traffic monitor should always be configured inside the

Note

firewall and before NAT (Network Address Translation).

If your installation includes multiple Cisco Web Security Appliances (S-Series) or Cisco Email Security

Appliances (C-Series), you may want to also use a Cisco Content Security Management Appliance

(M-Series) to manage them, as show in the following network diagram:

Transparent Proxy – Web proxy with an L4 switch

Transparent Proxy – Web proxy with a WCCP router

Explicit Forward Proxy – Connection to a network switch

L4 Traffic Monitor – Ethernet tap (simplex or duplex)

Simplex Mode: Port T1 receives all outgoing traffic, and port T2 receives all incoming traffic.

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Duplex Mode: Port T1 receives all incoming and outgoing traffic.

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"Connect to the Appliance" section on page 7

Cisco Web Security Appliance S195, S395, S695, and S695F Getting Started Guide

for more information about individual ports on the

Plan the Installation