we have a Toshiba Cable modem for Internet Access (in Germany). Do these cable modems have something like a simple firewall that drops packets that come from outside? I am not aware of any method to manage that modem (no browser or ssh access). Without any kind of that functionality or at least a router at the cable modem port, I guess the (single) computer behind the cable modem is very easy to attack, right? In that case, I should buy a firewall, right?
Thanks a lot! Michael