The IBM Cognos 10.2 BI architecture is separated into the following three tiers:
Web server (gateways)
Applications (dispatcher and Content Manager)
Data (reporting/querying the database, content store, metric store)
The user starts a web session with Cognos to connect to the IBM Cognos Connection's web-based interface/application using the web browser (Internet Explorer and Mozilla Firefox are the currently supported browsers). This web request is sent to the web server where the Cognos gateway resides.
The gateway is a server-software program that works as an intermediate party between the web server and other servers, such as an application server. The following diagram shows the basic view of the three tiers of the Cognos BI architecture:
The Cognos gateway is the starting point from where a request is received and transferred to the BI Server. On receiving a request from the web server, the Cognos gateway applies encryption to the information received...