F-SECURE INTERNET GATEKEEPER WINDOWS 2000-2003 SERVER 6.61..., Руководство администратора

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F.1 Introduction
If you want to provide a reliable and easy HTTP scanning service in your
network with F-Secure Internet Gatekeeper, you should use a transparent
proxy. For information about different methods that you can use when
setting up a transparent proxy, see
Transparent Proxy . below.
If you want to ensure that the speed of the communication does not slow
down and is not interrupted when scanning the traffic for malicious code,
you should set up load balancing. For information about different methods
you can use when setting up the HTTP load balancing, see “
HTTP Load
Balancing ” , 329 .
For more information about load balancing with Windows Network Load
Balancing Service, see “
Load Balancing With Windows Network Load
Balancing Service ” , 339 The section instructs how to set up cluster that
clients can access. Servers in a cluster communicate among themselves
and provide high-availability, load balancing and scalability. The service is
included in any version of Windows 2003 server.
If you want to deploy F-Secure Internet Gatekeeper in an environment
with multiple sub-domains, see“
Deployment Scenarios for Environments
with Multiple Sub-domains ” , 349 .
F.2 Transparent Proxy
A proxy server is a system which acts as an agent between the server
and the client. A typical proxy server serves one or multiple Internet
protocols, such as HTTP (Hyper-Text Transfer Protocol) and SMTP
(Simple Mail Transfer Protocol). The proxy server may modify the
requests that pass through it, which provides more functionality for clients.
This proxy technology is used in F-Secure Internet Gatekeeper to
intercept and scan data for viruses and malicious code.
Usually HTTP proxy server is used by specifying the proxy host name and
the port number manually in the web browser and other web-based
software. If the proxy is configured like this, it is not transparent. You may