Installation guide

Deployment Primer
2-29
Deploying in Reverse Proxy Mode
Overview of Reverse Proxy Mode
IWSVA is usually installed close to clients to protect them from security risks from the
Internet. However, IWSVA also supports being installed as a reverse proxy to protect a
Web server from having malicious programs uploaded to it. In Reverse Proxy Mode,
IWSVA is installed close to the Web server that it protects. In this mode, IWSVA
protects a Web server with the proxy server. The HTTP proxy is placed between the
Internet and the Web server. This is useful when the Web server accepts file uploads
from clients, or to reduce the load of each Web server by balancing the load among
multiple Web servers. ASPs/ISPs can use IWSVA as an HTTP proxy to protect the
upload traffic against viruses, and organizations with complex Web sites need it as a
centralized point of access control.
IWSVA receives clients requests, scans all content and then redirects the HTTP requests
to the real Web server. This flow is especially useful for Web sites involved in
e-commerce transactions, distributed applications that exchange data across the
Internet, or other situations where clients upload files to the Web server from remote
locations.