Concept for a DNS-based Redirection Mechanism for Educational Portals

Placing a server abroad and providing services remotely is a common approach for regions with a weak IT Infrastructure (e.g like Afghanistan). A problem with such systems is that the availability and content retrieval time depend on availability and speed of the Internet connection. In this book we present a module which dynamically configures the BINDv9.x DNS server in a way that the DNS server replies the closest server''s IP address respective to the user''s location. The re-director can operate using three policies which makes the module customizable for different environments. Each policy uses different criteria to redirect a user to the closest server.