Norton/Symantec has been making software firewalls for years.
Okay, maybe there is a way to make this work using XP's built-in firewall. But you've just reminded me how much XP's firewall sucks, and why I never used it. I strongly urge you to use the Norton 360 firewall or something else instead.
And don't have two firewalls running at once. If you discover that 360 has an active firewall running, don't enable XP's as well.
Anyway, *if* the XP firewall is the only one you have, and you really, really want to keep using it TRON.dll . . . then try this. But I can't guarantee it will work.
You know how you found the "Exceptions" tab? Well, next to it is one labelled "Advanced". Click on it.
Click the topmost "Settings" button.
On the "Services" tab, click the "Add" button.
You'll actually need to click the "Add" button twice, and fill in this box twice: so each looks the same as these two screenshots. The only thing you have to change is the "Name or IP Adress" part in both cases. That "192.168.2.4" number is *my* computer's number, but yours is not going to be the same. Use the "ipconfig /all" command
I told you about earlier, to find out what your IP address is and type it in both times. If you don't have a router, your IP address should be reported as "127.0.0.1". Otherwise, it will be "192.168.xxx.xxx".
Then after you're done, you should have two entries labelled TRONSrv.exe and both should have checkmarks in the boxes. Then click OK.
This *should* work for both the dedicated and non-dedicated servers, but I can't guarantee it because I didn't test it.