Ethereal-users: [Ethereal-users] Not seeing PPPoE packets when filtering

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

From: "Francisco Jorge" <franjorge@xxxxxxxxxxx>
Date: Wed, 07 Apr 2004 10:15:59 +0200
Hello,

I have a Windows XP PC running Ethereal 0.10.3 and WinPcap 3.0.

Over PPPoE, the PC has been assigned the private IP address 1.1.1.4 which is later NATed on the DSL modem to a public address. The connection is working properly and the PC has access to the Internet.

If I run Ethereal on this PC without any filter on the Ethernet interface I can see the packets coming in and out. But if I configure any kind of filter on Ethereal, it does not capture any packets that are destined to or come from the PPPoE IP address.

I have tried very simple filters like the following with these results:

Filter: tcp
Result: Ethereal sees packets from or to other hosts that are connected to the same hub, but none from or to the PPPoE IP 1.1.1.4.

Filter: host 1.1.1.4
Result: Ethereal captures no packets at all.

Filter: "none"
Result: Ethereal captures packets from or to all IP addresses connected to the hub, including the PPPoE address of the PC (1.1.1.4)

Of course, I am sure that the PC is generating traffic when I run Ethereal, the problem being that Ethereal does not see it when a filter is applied.

From time to time I get the following message in a command window, and I do
not know if it has anything to do with the problem:

(ethereal.exe:1472): Gdk-WARNING **: [Invalid UTF-8] gdkdrawable-win32.c:blit_from_pixmap:798: BitBlt failed: Controlador no v�lido.

Any idea?

Fran

PD: Please, CC a copy of responses to my e-mail address if answering to the list.

_____________________________________________
Francisco Jorge
email: franjorge@xxxxxxxxxxx

_________________________________________________________________
Correos m�s divertidos con fotos y textos incre�bles en MSN 8. Pru�balo gratis dos meses. http://join.msn.com/?pgmarket=es-es&XAPID=45&DI=1055