Thanks for the helpful answer!
The following is my problem:
i can use Mozilla on my host (PC with windows 7) to access some html files on board (picoCOMA5) by typing such as 192.168.2.126.
But if i connetc from host to board with puTTY and same IP-Adresse, i got message such like "....Connection refused....."
If i can't connect the board, how can i generate new keys on this board and where can i type "ssh root@<ipaddress of board>"?
Thanks again!
Best regards
Lee