I don't worry about going on the Internet either, and yet that is more dangerous than going on Tunngle (not 'everybody' can connect to your computer on Tunngle of course) :)
Anyway, if you want to read up on it or bypass it that's fine; was just providing the facts. Most of the people I play with experience much worse lag problems on Gamespy than on Tunngle unfortunately - not to mention the firewall issues etc. Just some of the reasons for the switch at least for Fleet Opers. Doesn't matter if firewall issues are caused by oneself - it's still a pain to deal with, especially if you don't know how to fix your router, don't have access to it, or are sharing a router and can't touch it anyway. Tunngle is where most of the players have gone. It's also easier to see when people are on because you receive notifications, can set up IM etc. It's up to each person individually to decide whether they want to use it or not afterall :) .
Connecting through a VPN client instead of through the public internet won't appreciably improve your connection speed. Setting up a VPN does not create a new cabling infrastructure or magically connect you via subspace. You realise the VPN still travels over your network and the internet on same route the traffic would go via anyway, right? (Ie. through your firewall/router.) It just means that because the end point is inside your network you lose the security benefits of the firewall.
I hope you have a very, very good virus scanner.
Of course it doesn't change the cables - but playing via Tunngle means you don't have to be routed through Gamespy's system, which seems to make a world of difference for at least a good portion of us ;). The same non-NAT firewall on your PC should work just fine for the Tunngle connection too. Security threats should only be caused via improper configuration (or glitches). :) It's not like you've suddenly said to the word, "Come on in" :D .
No matter though - as I said, just providing information on the most active online gaming platforms, nothing more. At least for Fleet Ops, we've got on the order of about 100 regular online players now which is helped in great part by this system :)
Your not even routed through gamespy in the first place.
As soon as you click on "host" or "join" gamespy's involvement in the game ends. They just provide a listing service and pass "-join -name -spass " to armada2.exe when you press the join button. They don't do appreciably more for hosting, I programmed a poor mans GSA years ago just to prove it could be done.
I wasn't aware that I was saying that Gamespy was or wasn't involved in every aspect :). If you would like, we can call it the 'Gamespy facilitated feature' - either way, this feature still causes more issues for both joining and hosting games, and for in-game stability then have thus far been experienced on Tunngle :) .
Once again however, I'm just addressing the original concern - that is where many gamers are, take it or leave it :)