Re: PPTP Question

["Joseph S. D. Yao" <jsdy () cospo osis gov>]

> According to the VPN book, the PPTP packet consists of the delivery
> header, the IP header, a GREv2 header and the payload.  The IP
> header of course contains the source and destination IP addresses.
> But if I'm using redirection at the firewall or other NAT device (so
> the connection is ostensibly made between the PC's address and a
> particular port or virtual IP address on the external side of the
> firewall), where is the >internal< IP address being broadcast?

More to the point, is there any way to make the IP addresses in the
delivery header and the internal IP header [presumably not the external
IP header, since you said this is the PPTP packet, which is
encapsulated in the IP packet] different?  If not, you can't have NAT.

--
Joe Yao                         jsdy () cospo osis gov - Joseph S. D. Yao
COSPO Computer Support                                          EMT-A/B
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