Proxy firewalls and content filters are both good & evil things; they can prevent you from making a bad mistake, or bad mistakes happening to you. However, sometimes it might be useful to punch through a proxy or firewall. Whether it might be for your youtube fetish, listening to internet radio, or uploading images/media into WordPress successfully (or you are a proxy admin and you want to prevent this sort of thing), this article on pushing connections through a firewall may be suitable for you.
Caveat: Doing things like this can be against your proxy provider’s policies. You are responsible for your own actions. This article is for educational purposes only!
System administrators and network security personnel: pay close attention to this article!