Please provide some information about the hard- and software used.

Dreambox 500
release 2.6.0 19.12.2005
Gemini Platin

In the protocol window of DCC v2.82 it says:

Telnet Connected
FTP Connected
Model DM500 detected.

Bootmanager: not found.
Telnet Disconnected
Telnet login incorrect!

I have the green light connecting PC, DB, and router, and it says Network OK.

I have disabled firewall in Windows Live One Care. I am using D-Link DI-604 router. There is a firewall in the admin settings but it is disabled also. Any ideas about how to fix this Telnet login problem?