Microweb PRO Series Guia de Instalação descarregar pdf (Página 59)

Deployment Primer

2-31

Note: Administrators should be aware of the following:

- The URL-filtering feature makes no sense in this configuration; only antivirus

scanning and URL-blocking are useful.

- In the reverse proxy mode, the Web server's access log is useless. To analyze the

connections for the Web site, you must use the IWSVA access log.

- Ideally, the reverse proxy server should be placed behind a firewall, but in many

cases, the proxy is connected directly to the Internet, where it is more vulnerable to

direct attacks. When a reverse proxy is configured without a firewall, administrators

should take all appropriate precautions in securing the operating system hosting

IWSVA.

IWSVA configured in Reverse Proxy Mode processes Web page requests in the

following sequence:

1. Clients initiate the Web request.

2. The request is received by Trend Micro™ InterScan™ Web Security Virtual

Appliance, and configured to listen on port 80.

3. Trend Micro™ InterScan™ Web Security Virtual Appliance scans the content, then

forwards it to an actual Web server.

4. The Web server delivers the requested page back to IWSVA.

5. Trend Micro™ InterScan™ Web Security Virtual Appliance rewrites the page

headers, and sends on the request.

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Microweb PRO Series Guia de Instalação Página 59