hi .. another way we managed to get it to actually play online was to make server use port 80. I know just about every server out there dont use 80 but we have set ours in meantime @ 80 to let people connect from behind school firewalls and test it out.
just to recap how to do it
1/ Go you to LFs folder, open the cfg.txt with notepad and find the line saying PORT 80 0 and change that line to PORT 80 1 ... then make the cfg file read only (right click, properties)
2/ Unlock your client (if you have not already done)
3/ connect to this server lfs://|PitStopS2™|0|S2|/ or connect directly to PitStopS2™ (note: you might still not be able to connect if your school/admin only provides proxy)
I should also note that not many if any other server out there uses port 80 so they more than likely will not work