Oh, I also read LogMeIn as LogMein, and I'm not German either.

Heres an alternative to LogMeIn and Hamachi:

Build a Soekris; install lightweight OpenBSD on it; use SSH (+ S/Key) + PFauth to authenticate and establish IPsec or VPN with client. From there you can do anything. You can use RDP over the VPN. You can log in on your asterisk server. You can use VNC (although its slow). You can use telnet. You can use FTP. You can forward ports too as part of the PFauth.

No need for proprietary 3rd parties like Hamachi or LogMeIn.