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Remote Assistance: Remote Assistance is a Windows XP Professional/Windows 2003 feature to enable Administrators to provide technical support to remote users. If your computer has problems, click on Invite someone to help you over the network. A remote user sends an invitation to an Administrator (or an expert) through e-mail or Windows Messenger. After accepting the request, the Administrator can view the user's desktop. To maintain privacy and security, all communications are encrypted.
Shared folder: Shared Folder enables the users on a network to share the folders and files. You organize resources that can be shared commonly, and put them in the folder named Shared Folder. With the Shared Folder feature, you can make an administrator's job easy. A shared folder is available to users and groups, and they can access and share its resources on the network. However, you can control the access to the resources on the network by applying various types of restrictive permissions.
To ensure that only valid users are able to access the files in a specific folder, you will have to modify the security permissions on the folder to list the users who are authorized to access the files. This will prevent unauthenticated users from accessing the files placed in the folder.
Network printers: You can connect any type of printer to a print server (device that connects a printer to the network) and can share them across the network. The Internet Print Protocol (IPP), which is encapsulated in the Hypertext Transfer Protocol (HTTP), is used for printing purposes. The print server on the network manages all requests relating to the printer. The Web page of a printer displays the information about the printer such as printer model, location, the number of documents waiting to be printed as well as the properties such as print speed and whether the printer supports color printing. You can pause, resume, or cancel the printing of any document sent to the printer. Multiple users on the network can share and use the common network devices, thereby eliminating the need to install it separately on their local computers.
Windows XP supports local printers (connected through the physical port to the print server) and network interface printers, which are connected to the print server through a network interface card. Windows XP supports Line Printer (LPT), COM, Universal Serial Bus (USB), IEEE 1394, network attached devices, and printer ports.
Remote Desktop and Remote Desktop Connection: Remote Desktop and Remote Desktop Connection are Windows XP Professional Terminal Service components. Using these components, clients can conveniently connect to a remote computer running terminal services and use the data, applications, and network resources remotely.
In Control Panel, select the System icon or right-click My Computer and select Properties. On the Remote tab page of the System Properties dialog box, select Allow users to connect remotely to this computer check box. Then press the Select Remote Users button. Now the users will be allowed to use Remote Desktop. Since you have to set Remote Desktop Access properties on the server, you must be the administrator or a member of the Administrators group.
ICMP: ICMP (Internet Control Message Protocol) is required for the client server application and considered an integral part of IP (Internet Protocol). ICMP messages delivered in IP packets and routed through the Internet. ICMP messages are encapsulated with IP datagrams, hence its delivery is unreliable, and there is no guarantee that the delivered message will return. The purpose of these control messages is to provide feedback about problems in the communication environment, not to make IP reliable. If reliable communication is required, IP must use its own reliability measures. The PING command, for example, uses ICMP to test an Internet connection.
