Sun Microsystems Portal Server 6 2005Q1, Руководство по планированию

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Mapping Portal Server Features to Your Business Needs
56 Portal Server 6 2005Q1 • Deployment Planning Guide
SRA
Table 3-2 shows the Sun Java System Portal Server Secure Remote Access (SRA)
features and their benefits
Table 3-2 SRA Features and Benefits
Feature Description Benefit
Integrated security Extranet or Virtual Private Network
capabilities “on demand” while providing user,
policy, and authentication services. The
Gateway component provides the interface
and security barrier between remote user
sessions originating from the Internet, and
your corporate intranet. Extends an enterprise’s content, applications,
files, and services located behind firewalls to
authorized suppliers, business partners, and
employees.
To prevent denial of service attacks, you can
use both internal and external DMZ-based
Gateways.
SRA core Users achieve remote access through four
components:
• Gateway
• NetFile
• Netlet
• Proxylet
This component has four parts:
• Gateway—Controls communication
between the Portal Server and the various
Gateway instances.
• NetFile—Enables remote access and
operation of file systems and directories.
• Netlet—Ensures secure communication
between the Netlet applet on the client
browser, the Gateway, and the
application servers.
• Proxylet—Redirects a URL to the
Gateway.
Universal access Enables web browser based universal access
with no client software installation or
maintenance necessary. Simplifies the IT administration and
maintenance overhead while dramatically
reducing the time and cost of deployment
Netlet Proxy Provides an optional component that extends
the secure tunnel from the client, through the
Gateway to the Netlet Proxy that resides in
the intranet. Restricts the number of open ports in a
firewall between the demilitarized zone (DMZ)
and the intranet.