On 9 Oct 2000, at 11:42, Chris Riddell wrote:
> Hallo
>
> I am on an NT Server, and I am about to setup RAS using a few 56k Modems.
> The problem is we are a software company and vunreable to attacks and this
> is serious considering the clients we have etc etc.
>
> I am aware that it is difficult if not impossible to setup firewalling with
> a modem. Can anyone help with this?
>
> I have heard about a card system called "SECURID" which creates "random"
> numbers in sync with the server, which obviously is more secure - has anyone
> heard or used much about this? Are there any other suggestions instead of
> this?
If you're using a modem, one thing that might help is to use a call
back feature. That way, when the connection is authorized, it
hangs up the telephone and calls back at the pre-determined
number. I would guess your biggest vulnerabilities would be:
2) if someone dials in with a computer connected to the internet,
you could still face serious problems
1) if used by employees to dial in from home, the employee's kids
or roommates could present a problem
But what do you mean "firewalling with a modem"? If you want the
modem connection to go through a firewall, why not just set up a
firewall between the computer servicing the modem and the internal
network? Firwalls are not necessarily limited to between your
network and the internet.
Eric Johnson
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