Help me bypass the Firewall

Alright, so, I want to play RuneScape at school.

When I go to www.RuneScape.com you know, it loads up like normal. But I click on "Play now" and it attempts to load, but it gets to the point of 'Connecting to update Server'. Stops for about a minute, then comes up with this:

RuneScape was unable to connect to the update server. This is most likely caused by a firewall blocking the connection.

To resolve this:

•If you have firewall or security software installed, they can often block RuneScape from accessing its servers. Please ensure that RuneScape/Java can connect to its servers on port 43594.
•Note: Windows XP Service Pack 2 has built in firewall software. If, when loading RuneScape, this asks if you want to allow the connection, you need to say 'yes'.
•If that doesn't help, then an external firewall may be causing the problem. Please ask your network adminstrator/ISP to open port 43594 for TCP traffic so that RuneScape and Java can run correctly.

If problems persist, please refer to the Technical FAQs, which can be found in the Customer Support section of our website.


Is there any way I can bypass this? I've tried everything. Proxy's, the school has blocked them. Downloading swiftkit onto a flash drive then trying to play it - still, nothing. I really want to play with my mates after school, but the bloody firewall is pissing me off.​

 

Have you tried downloading firefox on a usb taking it to school and downloading there?

 

Yeah, I've tried Firefox and Chrome. Still doesn't work.

 

What about downloading it directly from your computer? Or does the proxy block it also

 

Yeah, I've tried that aswell. The firewall is blocking it.

 

I've got nothing else but try reading this if it helps:
http://www.makeuseof.com/tag/how-to-get-into-blocked-websites-in-school-with-freeproxy/

 

I can't even get into Command Prompt. It's been blocked by administrators lol..

 

Step 1:Right click on your desktop. Select new text document.
This will create the document u need to create the command prompt.

Step 2:Name the document custom command prompt.bat. (make sure its not custom command prompt.bat.txt. Enable file extensions [Tools>Folder Options>View>Uncheck hide extensions]) to ensure this.

Right click on the document and select edit.
Paste the following

Code:

@echo off
break off
title custom command prompt (or just title it anything u want) color 0a
cls

:cmd
set /p cmd=command: (or type in anything you want)

%cmd%
echo.
goto cmd

Click save not save as just save.
Exit notepad and click on the document u created it will open your own command prompt.

 

Thanks mate. It worked

Do you have any advice on what I could do to bypass the firewall?