Scott,
I have an @home connection as well, and I am serving 4 (mostly under development) web sites, and I have not had trouble accessing my e-smith manager. I would recomend using ssh, but telnet has worked for me when I needed it. I usually just set the telnet settings open when I was leaving for work, took care of business in my server, and then closed the proverbial telnet door.
Just fire up telnet and throw in your IP, log in as admin and pow! you are in! It is as easy as that. As far as @home, well, they haven't sut me down yet... Knock on wood. Let me know if I can help you further.
Steve