CCA Citrix MetaFrame XP for Windows Administrator Study Guide (Exam 70-220)

Recognizing Citrix Web Components

• The three tiers (or components) of NFuse are a Web server, a Citrix server farm, and an ICA Client device.

• NFuse is essentially a Web-enabled Program Neighborhood.

• Only those applications published in the Farm Management Scope will appear in NFuse.

• The NFuse Web Extensions are what install the NFuse Java objects.

• The Web Site Wizard will help create a customized Web site to fit a company's needs.

• All Web sites created with the Web Site Wizard include code for Web-based ICA Client installation.

• An ICA Client device is comprised of a Web browser and an ICA Client.

• An ICA file contains parameters needed by the ICA client to launch an ICA session.

Identifying NFuse Features and Components

• On a firewall, the following inbound TCP ports need to be open for communication to occur for: 80 for HTTP, 443 for SSL, and 1494 for ICA sessions.

• To specify an alternate address on a Citrix server, you must run the altaddr command.

• To specify an alternate address on a Web server, you must replace the substitution tag [NFuse_IPV4Address] with [NFuse_IPV4AddressAlternate].

• NAT is used in conjunction with alternate addresses.

• Ticketing allows authentication to occur without passing credentials within an ICA file.

• SSL Relay is a secure communication created between the Web server and the Citrix server farm.

• NFuse Java objects are COM compliant.

• 128-bit RC5 encryption allows secure communication to occur from the ICA Client device to the Citrix server farm.