Trusted Shares and Security - Win32 Programmer's Reference

Custom Search

Trusted Shares and Security

When a client user connects to a DDE share from a remote computer, network DDE accepts the request only if the following statements are true:

The user who created the share has granted trusted status to the share by calling NDdeSetTrustedShare. Only the creator of the share can grant trusted status to the share. Not even an administrator can grant trusted status to a DDE share that was created by a different user.
The user who created the share is currently logged on to the server computer.

The process of granting trusted status to a share adds the share to the logged-on user's trusted shares list in the DSDM. This creates a trust relationship between the server and its clients. Once a DDE share has trusted status, clients can connect to it as long as the user that created the share is logged on. When the client connects to the share from a remote computer, network DDE accepts the request only if the share is listed in the logged-on user's trusted shares list in the DSDM.

Security
Network DDE performs an additional security check when the client requests data or a link. It checks that the server has granted the remote user the necessary permission for the operation. The server controls access to the share through the pSD parameter of the NDdeShareAdd function. This parameter specifies the security descriptor. If this parameter is NULL, the function creates a default security descriptor that grants full access to the creator of the share and grants read and link permission to all other users. To grant or deny additional permissions to individual users or groups of users, create and use a security descriptor. For more information on security descriptors, see the Security overview.

To obtain the security descriptor for an existing DDE share, call the NDdeGetShareSecurity function. You can edit the information and then update the security descriptor for the share by using the NDdeSetShareSecurity function.

Last news from Greatis Software

    Nostalgia .Net     .Net is powerful, but not all-powerful, so sometimes we need to use Win32 API for our .Net applications. It's simple enough with Platform Invoke if you have Win32 skill, but we do not always have time to dig the ancient documentation, declare the special types that are compatible with Win32, find the values of the Win32's constants and so on. Nostalgia .Net offers several simple-to-use classes, and components that will allow you to forget about the headache of Win32 and just use the power of Win32 in your application the same way as you use the native. Net classes. More »

Recommended software for developers

    Ultimate Pack     Component pack for Delphi and C++ Builder that contains runtime form designer, runtime object inspector, print suite and much more for the very special price. More »

    Form Designer .Net     Unique runtime form design solution that allows to edit any form in .Net WinForms application at runtime with full source codes for only 300 euro! More »

    Print Suite .Net     Print Suite .Net is a set of components for easy printing texts, images and grids from your WinForms applications. Full C# source codes are available More »

    Gradient Controls .Net     Gradient Controls .Net offers controls with gradient background feature. Labels, panels and so on... Full C# source codes are available More »

    Greatis iGrid     iGrid plots drawing grid right over your desktop, so you can use it everywhere, with any drawing application without any special plugins for different graphic editors. More »

All the contacts and projects

Dmitry Vasiliev (just.dmitry)

More Online Helps

Win32 Programmer's Reference
Win32 Multimedia Programmer's Reference
OLE Programmer's Reference
Microsoft Windows Pen API Programmer's Reference
Microsoft Windows Sockets 2 Reference
Microsoft Windows Telephony API (TAPI) Programmer's Reference
Unix Manual Pages

greatis just4fun network