Re: Inbound packet processing- mobile host problem

["rupesh" <rupesh.jain@xxxxxxxxxxxxx>]

>Let us consider the following scenario
>
>
>       PPP            internet                 Local intranet
> H1 --------[ISP]---------------- SG2 ----------------------------------H2
>
>Here let us assume H1 is the mobile host which wants to contact one of the
machines(H2)
>inside the home organisation. Now the H1 dials up to any local ISP and gets
an Public IP address,
>which H1  uses to contact the SG2. In this case it is equivalent to any new
machine trying to
>get into the organizational network, so is there any means by which the
SG2 can associate the dynamically
>allocated IP address with H1??
>
>Venkatesh

    In such a case one can make use of Virtual Adaptar Interface with
Routing Support at the H1 side i.e. mobile host side.

In such case virtual adaptar will do following in tunnel mode.

Outbound Processing from mobile host.
Outer destination IP add: IP add of SG2.
Outer source IP add: IP addre got from ISP.

Inner destination IP add: IP add of H2
Inner source IP add: one of the IP add of intranet of organization or IP add
to be used by mobile host & given by organization's System Administrator.

If there is some prob. with above then please correct me.

Reg
Rupesh
MTS
Cdac, Pune