Well, here's an idea. It depends on the type of phone system you have and whether or not your user needs inbound dialing. Most phone systems are PBX types that are pretty configurable. Make the modem line an analog extension rather than a direct POTS (Plain Old Telephone Service) line. This will drastically slow down hackers as they would have to either dial your main line then the extension then hack the box, or hack the phone system then hack the box. Either way it will eliminate 99.9% of the hackers out there. This also will eliminate the need for adding more hardware for you to administer. :-)
Brian Chris Berry wrote: > I think I've got my internet connection security coming together, but >I'm worried about a potential back door. I have one worker who absolutely >has to have a modem to contact the legacy system our billing service >uses. What bothers me is that someone might get clever and use a war >dialer to find this number and try and hack their way around my secure >gateway. I'd like to make this more difficult or at least have some way >to contain the damage. Does anyone have any ideas? I thought of possibly >putting a linux box configured as a firewall between her and the rest of >the network, but I'd have to have alot of ports open to allow all the >services she'll need so I don't know if that would even help much. > >
