Types of sap projects:-
2) sap support projects
3) sap migration projects
1) sap implementation projects
In this type of projects, customers are moving towards sap software. previously they might be using some other software.
once sap project is implemented, it should be supported by the consultants in day-to-day business. in support projects, the support team helps the customer in day-to-day business.
As we see, sap is continuously upgrading the R/3 software.customers are moving from the older versions to new versions. when the customer decides to new version, it is called sap migration projects.now-a-days many customers are migrating from older versions like 4.5 or 4.6b, 4.6c or ecc 5.0 or ecc 6.0 versions to new versions.
vpn (virtual private network):-
From the above definition it is clear that vpn also uses non-private network like internet. but it creates a virtual network.
In general, you will be given with a user name and password for vpn. by using the user name and password you can connect to vpn.
Ex: at&t and citrix, there are many vpn softwares in the market.