Firewall question

[Anne Wilson]

On Thursday 15 May 2008 12:53, Bradley Pursley wrote:
> Anne Wilson wrote:
> > In another thread Tim Evans said:
> >
> > You can, however, configure iptables to *allow* only a specified list of
> > IP addresses (i.e., the ones you approve of).
> >
> > This set me wondering.  If you use wifi hotspots to collect mail, for
> > instance, you have no idea what IPs you will be using.  Is there any way
> > that the system can recognise the computer rather than the IP?  I'm
> > guessing it must be possible, as my on-line bank knows immediately if I
> > use a computer that I haven't used before.
>
> I suspect that it recognizes your computer because of a cookie that is
> cached for their site.
>
Maybe, but I use several, and it never complains if I've used that one before, 
but asks for security checks if it's one I haven't used.  Still, I suppose 
that a cookie on my computer would be the obvious answer to that.

Not sure that that helps my question, though.

Anne