Re: icmp and port

[gis88530]

Thanks for your answer, and I still have some questions.

(private)---->(masquerade)---->(public)
If I ping public host from private host using this command:
ping 140.113.1.1
What trigger ICMP message? The "ping" binary program?
AND
How masquerade gateway know the original packet port information?
Because I think original packets are in private hosts, masquerade
gateway can't get the original packet.

If I am wrong, please feel free to advice me.
Thanks in advance.

Cheers,
Tom
----- Original Message -----
From: "Andreas Ferber" <[e-mail]>
To: "gis88530" <[e-mail]>
Cc: <[e-mail]>
Sent: Tuesday, April 17, 2001 10:39 PM
Subject: Re: icmp and port

> Hi,
>
> On Tue, Apr 17, 2001 at 10:28:53PM +0800, gis88530 wrote:
> >
> > Do icmp packets have port information?
>
> ICMP packets quote part of the original packet that triggered the ICMP
> message. From this quoted part, information can be extracted about the
> connection the ICMP packet belongs to.
>
> Andreas
> --
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could just
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