Quote from Hurricane:
Be careful doing anything fancy to gain access from behind a corporate firewall or you might be looking for employment elsewhere.
The company I work for upgraded the firewall which eliminated all real time data from all sources (including cybertrader referenced above). I tried multiple avenues (http tunnel was the closest potential solution) but my IT department detected my attempts to bypass firewall via a "user attempt log." I was asked (anonymously) to remove all non-standard software from my workstation.
I now cart in my laptop and use dial up. I feels like I should count my profits at the end of the day with an abacus.