Installation guide

Trend Micro™ InterScan™ Web Security Virtual Appliance 6.5 Installation Guide

Forward Proxy Mode ...............................................................................1-10

Reverse Proxy Mode ................................................................................1-10

ICAP Mode ...............................................................................................1-10

Simple Transparency Mode ....................................................................1-10

WCCP Mode .............................................................................................1-11

Chapter 2: Deployment Primer

Identifying Your Server Placement ..............................................................2-2

Two Firewalls with DMZ .........................................................................2-2

One Firewall with No DMZ .....................................................................2-3

Planning Network Traffic Flows ..................................................................2-4

Planning the HTTP Flow ..........................................................................2-5

HTTPS Decryption ...............................................................................2-7

Planning FTP Flows ..................................................................................2-7

FTP Proxy in Standalone Mode ..........................................................2-7

FTP Proxy in Dependent Mode .........................................................2-9

Deploying in Forward Proxy Mode ............................................................2-10

Overview of Forward Proxy Mode .......................................................2-10

Reconfiguring Client Settings ............................................................2-11

Using a Layer 4 Switch .......................................................................2-12

Using a WCCP-enabled Switch or Router .......................................2-14

Planning the HTTP Flow Using the Forward Proxy Mode ..............2-15

HTTP Proxy in the Standalone Mode .............................................2-15

HTTP Proxy in Simple Transparency Mode .................................2-16

HTTP Proxy in Dependent Mode (Proxy Ahead) .........................2-17

HTTP Proxy in Dependent Mode (Proxy Behind) ........................2-19

HTTP Double Proxy in Dependent Mode .....................................2-21

Deploying in WCCP Mode ................................................................2-23

HTTP Proxy in WCCP Mode (Single and Multiple IWSVA Servers)

2-23

Deploying in ICAP Mode ............................................................................2-23

Overview of ICAP Mode ........................................................................2-23

Planning the HTTP Flow Using the ICAP Mode ...............................2-25

HTTP Proxy in ICAP Mode (Single and Multiple IWSVA Servers) ..

2-25