How secure is a Cable Modem Internet Connection?

Cable connections, like any other connection on the Internet are not 100% secure in any instance. Although most cable providers block ports 137-139, Cable Modems are likely to be generated in any case where a user has file and print sharing turned on, or possibly other services like SMTP, Web Servers and Telnet services can all be exploited in certain ways. A General rule of thumb is to keep your passwords long and with letters and numbers, and turn off any service that you don't absolutely need running. You should also invest in a NAT or Firewall type application to keep your network as secure as possible.  more