MCSE ISA Server 2000- P9: These books include a large amount and different kinds of information. The many different elements are designed to help you identify information by its purpose and importance to the exam and also to provide you with varied ways to learn the material. | Chapter 7 GATEKEEPER 213 Second if translation services are needed to place outgoing calls. Translation services provide the capability to reference services that may not have a registered DNS address. For example a personal email address a Plain Old Telephone System POTS device phone number and so on. Think of this powerful capability as a sort of name resolution for the rest of us. Here s how it works 1. You use NetMeeting to place a call to me at roberta@. Neither one of us has a valid Internet routable IP address nor will our internal addresses be exposed on the Internet. 2. NetMeeting connects with your in-house Gatekeeper. 3. The Gatekeeper knows that is not an internal address and so forwards the request to ISA Server. 4. ISA Server looks up the address for and sends the query over the Internet to . 5. The ISA Server at receives the request for roberta@ and contacts its internal Gatekeeper. 6. The Gatekeeper translates the alias into a network address. 7. The ISA Server at sends notice to your ISA Server and creates the connection. 8. The ISA Server holds the link open. Restrictions can be set within the ISA Server Gatekeeper to prevent or allow video audio T120 data real-time multipoint data connections and conferencing standard and application sharing and to limit the hours this service is available. These restrictions are set on the Property pages for the . Gatekeeper. Registration Admission and Status communications are origination end-point to destination end-point usually client . These end-points should be registered with the Gatekeeper using the Registration Admission and 214 Part II CONFIGURING AND TROUBLESHOOTING ISA SERVER SERVICES Status RAS protocol. Although you can add static registrations always active and cannot receive inbound calls using the Gatekeeper you should only do
