Failed to Connect - Have Tried A lot

[Niku]

Hey n3xus,
Thanks for the ideas.

This is my usual setup:

My computer > LAN Cable > Router > Wireless Internet ISP

I have just reformatted Windows to rule out any Windows errors. It's a fresh install, with little applications installed right now. Comodo is installed, but it is correctly configured (HeRO.exe is a Trusted Application, ports 5121, 6121 and 6900 are all open).

I have tried connecting normally through the Router, but it didn't work. I also tried connecting with the Modem directly hooked up to my PC, and that didn't work either. I've got a feeling it's some sort of Hardware Firewall which is blocking me. I'm just not sure where. I can't seem to log into the Modem Interface (I've been told it doesn't have one) and the only mention of a Modem in the Router is the SPI Firewall, which has been recommended to NOT disable. The Router has a tonne of ports open, including the same as Comodo above.

I will be going over to my parent's place in a couple of days to test out there. I have all my old network gear, and a stable non-wireless Internet Connection there, so I'll give that a go.

For the record, I have tested other RO servers to make sure it wasn't just HeRO and I have been unsuccessful to log into any of them. The only time I could log into ANY server was using that HTTP-Tunnel software, which I really don't want to use/pay for.

I'll let you guys now if I find anything out. Thanks for all the help!