[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: inbound vs outbound?



Hello,

"inbound" and "outbound" have nothing to do with IP addresses. Since your
machine forwards packets, each packet is processed twice by IPsec and is both
inbound and outbound :
first your packet is received on an interface, hence it is processed by IPsec as
"inbound". Then it is forwarded and sent on another interface : it is processed
by IPsec again, but as an "outbound" packet.

Christophe.

mahdavi wrote:

> Hi
> U R right about hosts.
> But I am to design a security gateway in hardaware that is located in heart
> of a high speed router that has many interfaces.
> no packet is generating from my machine. so with your idea there is no
> outbound there. just pay attention to this fact that every packet that is
> destined to my machine is in tunnel mode.
>
> By now tell me what is wrong with my opinion
>
> "every packet is outbound else its destination IP is IP of this machine and
> it is in tunnel mode (this security gateway) ."
> ----- Original Message -----
> From: Puja Puri <puja.puri@cdac.ernet.in>
> To: mahdavi <mahdavi@sepahan.iut.ac.ir>
> Cc: <ipsec@lists.tislabs.com>
> Sent: Thursday, 30 August, 2001 9:18 ΥΘΝ
> Subject: Re: inbound vs outbound?
>
> > I beg to defer from this point of view "that every packet that is not
> > destined for my machine is outbound". I feel that the packets that are
> > originating from ur machine are outbound and the remaining packets
> > recieved by ur machine are inbound irrespective of whether they r destined
> > for ur machine or they r forwarded(in which case they also become
> > outbound).
> >
> > Puja Puri
> > Member of Technical Staff
> > Networking and Internet  Software Group
> > C-DAC
> > Pune
> >
> > On Wed, 29 Aug 2001, mahdavi wrote:
> >
> > > Hi.
> > > In a security gateway how you can distinguish between an Inbound packet
> and outbound packet?
> > >
> > > Is this correct ?
> > > "every packet is outbound else its destination IP is IP of this machine
> (this security gateway) .
> > >
> > >
> > >



Follow-Ups: References: