Thanks for your response. The DLink modem has been changed to a Binatone ADSL 2000 modem/router. The setup has been made already and I can even ping from the Tenor successfully. However, from outside someone can only hit the modem and not the Tenor. I have been told to do a PAT as you suggested and would like to know which ports should be open. This particular modem has rules to be added to enable PAT which goes as follows:
Add new rule:
ID (Which rule number?)
Public Port
Private Port
Port Type (TCP or UDP?)
Host IP Address
Could you assist me with it?
There are no rules added yet. By the way, what is the difference between PAT and NAT?
Thanking you and best regards,
Richard