Expertise

MS Exchange Integration and Development Experts

Implementing security on mail by stubbing it. All mail on Exchange Server is stubbed so the content of the mail can never be tampered with. Keep a copy of the stubbed mail on a different server and return the original mail on demand.

Virtualization

Windows Hooking : Win 32 API’s
- Local Hooks
- System Wide Hooks
API Hooking : Windows Platform Virtualization
- User Mode — API Hooking
- Kernel Mode — Filter Drivers

Custom Authorization

Logon to Windows NT is controlled in part by a DLL called GINA (Graphical Identification and Authentication). PSI MS Tech Group has extensible experience and fair load of expertise in developing an extensible custom GINA. This replacement GINA adds a number of key features and functions missing from Microsoft's GINA.

Feature	MS GINA	Custom Features from MTEG@PSI
Logon device	Keyboard only. Users are identified and authenticated based on user names and passwords that they type.	Multiple devices. Users can be identified and authenticated based on smart cards, physical characteristics, or any mechanism for which supporting hardware exists.
Logon dialog boxes	Partially customizable. Some key dialogs and messages in the logon sequence are replaceable.	Completely customizable. All dialogs and messages in the logon sequence are replaceable.
Logoff from locked workstation	Current user or administrator. When a workstation is locked, only an administrator (or the logged on user) can log the user off. Credentials must be supplied twice: to log off the current user and to log on the new user.	Any user. When a workstation is locked, any valid user can log the user off. Credentials must be supplied only once. This feature is especially important where multiple users with similar authority typically share a single workstation.
Automatic logoff	Not supported. Screen saver functionality allows automatic locking of workstations after a period of inactivity, but logoff due to inactivity is not supported.	Fully supported. An inactive workstation is locked after a configurable period, then logged off after a configurable period. This mechanism also allows for automatic locking and logoff based on other criteria, such as removal of a smart card from the reader.
Customized Authentication	None. Only windows authentication is supported.	As per Requirement. The custom GINA can allow the application custom authentication parallel to windows authentication like external NOVELL directory, App Server etc.
Application continuity on shared workstations	Not supported. When a user logs off, all running applications are terminated, and the next user must restart them. If the applications are slow to initialize, time is wasted and productivity is lost.	Fully supported. Designated applications can continue running while multiple users log on and off. Individual accountability is maintained.