With HTTP and the browser interface, you have a fairly simple job securing your communication: simply create an SSL certificate, install the certificate in your browser, and use HTTPS as the protocol.
With the WAP interface, things are more difficult, since your phone does not directly communicate with ExpertAssist. WAP devices connect to a WAP gateway that acts like an intelligent proxy server:
While this is of no concern when browsing WAP pages for stock quotes or weather forecasts, it raises two issues when a secure connection is required:
When using a commercial gateway (such as the ones provided by cell phone companies) the first issue is usually not a problem. However, your cell phone provider will probably not install your self-generated ExpertAssist certificates, so the secure connection between the gateway and ExpertAssist will not be established.
When accessing ExpertAssist from your phone, always use the HTTPS protocol by specifying HTTPS:// in the beginning of the URL. This will encrypt the data sent and received between the gateway and the ExpertAssist installation.
Here is a brief description of how to configure a Nokia7110 to use a WAP gateway:
You will be greeted with an Info screen that displays some essential information about the computer.
At the bottom of this screen (and at the bottom of every screen) you will find the main menu that allows you to select ExpertAssist functions accessible via the WAP interface.
The menu, at the bottom of the screen looks like the image on the left (only partially shown):
Here is the complete list of menu options:
A link to this menu is present at the bottom of every page displayed by ExpertAssist.
You see a listing of all installed services, with their status next to them. Selecting a service takes you into a menu that allows you to control that service:
On the services listing page, near the end, you can request different parts of the list.
Looks and behaves exactly like the Services page.
The Processes page has three options, as shown in the image on the left.
The first two will let you see a listing similar to the Services or Drivers lists – next to the process name you will see either the CPU time used by the process or the Memory in use by the process, depending on your selection:
Selecting a process will display detailed information about it, such as the executable name with full path, the parent process, if available, the creation time, CPU time, pagefile and physical memory usage, as in the image on the left.
You also have the option of killing a process here.
The third option in the Processes menu is the Create Process one. This will present you with the following dialogue:
Filling out this form and submitting it launches a new process under the user account of the person using the WAP device. You can use this for a variety of tasks, such as executing batch files:
Executable Name: cmd.exe
Optional Parameters: /C c:\backup\startbackup.cmd
This will launch the command interpreter, which, in turn, will launch the startbackup.cmd batch file in the c:\backup directory.
On the performance pages, you can view graphs on the CPU, memory, and disk space utilization. The main menu looks like the image on the left.
By selecting either of these options, you are presented with three graphs, each with a different sampling rate – just like in the main ExpertAssist performance charts.
The CPU load represents the total CPU load on multiprocessor machines. The memory load includes physical and virtual memory. The disk space utilization chart represents the total for all hard disks in the computer.
This option presents you with a menu similar to that found in the HTML interface.
The first three selections reboot the computer. Normal reboot shuts down all applications. Emergency reboot kills all processes then shuts down and restarts the system in an orderly fashion. You might lose data in your running applications. Hard reboot is just like pressing the reset button or toggling the power switch: use this only as a last resort!
The last selection restarts the ExpertAssist service.
This option enables you to view ExpertAssist’s event viewer. You will be given a list of event viewer options.
This menu option ends your ExpertAssist session.
It is not strictly necessary to manually log out – your session will eventually time out after the time period specified in the ExpertAssist configuration elapses.
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