Can't connect to host

I can't figure out what the deal is, host says it's not on their end. When I try to log in through SmartFTP, I get this:

An established connection was aborted by the software in your host machine.
Server closed connection

I was able to log in two weeks ago and work on the site, and nothing has changed on my box since then, so I can't figure out what the deal is. Anyone have any ideas?


I can't figure out what the deal is, host says it's not on their end. When I try to log in through SmartFTP, I get this:

An established connection was aborted by the software in your host machine.
Server closed connection

I was able to log in two weeks ago and work on the site, and nothing has changed on my box since then, so I can't figure out what the deal is. Anyone have any ideas?
Getting the same problem. This is killing me...Please anyone help.

Try temporarily disabling any running firewalls (don't forget Windows' XP SP2 internal firewall).

Alright, I know that UPnP is doable with SmartFTP. I found where to enable it on v 1.5, but I'm running v 2.0 on my machine at work and I can't find that option.

UPnP:
Settings -> Connection

It's enabled by default.