[Wylug-help] Linux and GPRS

[gARetH baBB]

On Wed, 22 Oct 2003 lists at mungewell.org wrote:

> I assume that the phone allocates an IP for the PC end of the ppp link,

The PPP end of the link is entirely generated by the phone ... I'm unsure
what the phone talks to the network in, but it's possibly not PPP.

> is this a public IP - can it be reached from the outside world?

Entirely depends on the network, but I don't think any UK network does
(certainly Orange and Voda and Cellnet don't), you get a private address
which is NATed externally.

> Is there anything that would prevent a 'evil doer' from ramping up your
> phone bill by sending loads of (unwanted) data to you (i.e flood ping)?

The private IP.