Normally, when your computer wants to get a piece of data from somewhere on the internet it creates a connection to the machine it would like to get the data from, requests the data and closes the connection. In turn, the machine will then reopen the connection back to you and send you the data. However, this would require the machine to know exactly where you are and how to talk to your machine - not good for security.
Therefore, companies will set up a firewall and a proxy server. A firewall prevents you from being able to connect to any machine that is not inside your firewall. A proxy server is the only server that is outside your company's firewall that you are allowed to talk to. So, when you want a piece of data from the internet, you request it from the proxy server. It will then get the data for you and pass it back to you. This way, noone outside your firewall can see any of the machines at your company with the exception of the proxy server.
If you are located behind a fiewall, there are a few things you must tell RealVR in order for it to be able to get information to you that is out on the internet. It must know the name of your proxy server and the port that it will accept connections at. This information must be obtained from your network administrator. If you are using Netscape, Internet Explorer, Fetch or any other internet software, and that software work on your machine, this information can be found in the Preferences dialog box that allows you to enter innformation about proxys.
Once you know the name of your proxy server and the port to connect to it at, you will need to create a file that RealVR can read to find out this information. This file is called config.txt. If you have already run RealVR once, you will find a shell for this file in your RealVR Cache folder. If you have not, you should do so now to allow RealVR to create this file for you. On Windows, this folder can be found on the top level of you C:/. On the Macintosh it can be found in you Preferences folder which is inside your System Folder. Once you locate it, load it into your favorite text editor - SimpleText or Notepad will be fine. It should look as follows:
############################################### # Use this configuration file to set up # # your proxy server (if you have one). # # Just fill in the fields below. For example: # # proxyServer=myproxy # # proxyPort=8080 # # If you ever need to switch back to no proxy # # server, just delete this file. # ############################################### proxyServer= proxyPort=
If you would like to add comments to this file you may. Any lines starting with a # will be ignored. As it states in the top of the file, just put add the name of the proxy server and the port you need to connect to to the file, save it, and RealVR will now be able to connect to the internet from behind your firewall.