For more information on securing mail-related
services, including step-by-step deployment scenarios, see Chapter 12.
Locking Down Web Application Access
As previously mentioned, the HTTP filter included with ISA Server 2006 includes preinstalled
knowledge to identify and eradicate HTTP threats before they access any web
services, including traditional web servers and web applications. It is under this pretext
that ISA can be deployed to secure external-facing web servers and web traffic. In addition,
the HTTP filter is customizable, and can be modified or extended manually or can use
third-party software products to do things such as limit specific HTTP calls, block
executable downloads, or limit access to specific web sites. For more information on
setting up ISA to secure web services, refer to Chapter 14, ???Securing Web (HTTP) Traffic.???
Securing Remote Procedure Call (RPC) Traffic
One of the more potent threats to Windows infrastructure in recent years has been the
rise of viruses and exploits that take advantage of Remote Procedure Call (RPC) functions
to take over computers and wreak havoc on client operating systems.
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