Re: icmp and port

["gis88530" <gis88530@cis.nctu.edu.tw>]

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" <aferber@techfak.uni-bielefeld.de>
To: "gis88530" <gis88530@cis.nctu.edu.tw>
Cc: <linux-kernel@vger.kernel.org>
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
> --
> I *____\b\b\b\bknew* I had some reason for not logging you off... If I
could just
> remember what it was.
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>