On Jan 14, 2004, at 7:34 PM, miten mehta wrote:
I have compaq armada e500 laptop and it has Lucent Win
Modem. I had tested it to do ppp
That's unfortunate, because...
In Ethereal I could not see my Lucent Win Modem
interface listed.
...WinPcap 3.0 doesn't support PPP interfaces at all:
http://winpcap.polito.it/misc/changelog.htm
"Version 3.0 beta, 10 feb 03
...
o NdisWan support:
◦ due to the large number of messages reporting problems (blue
screens) with VPNs, PPTP and such connections, we have disabled the
support for NdisWan adapters. As a consequence, it is not possible to
capture from PPP (neither NdisWanIp, nor NdisWanBh, nor
NdisWanBfIn/Out...). At the moment we have no plans to fix the problem
with VPNs, PPTP, PPP unless we get a generous sponsorship."
and WinPcap 2.x doesn't support it as well as one might like - in
particular, it doesn't support it on NT (NT 4.0, 5.0 a/k/a W2K, 5.1
a/k/a Windows XP, etc.):
http://www.ethereal.com/faq.html#q5.4
"3. WinPcap doesn't support PPP WAN interfaces on Windows
NT/2000/XP/Server, so Ethereal cannot capture packets on those devices
when running on Windows NT/2000/XP/Server. Regular dial-up lines, ISDN
lines, and various other lines such as T1/E1 lines are all PPP
interfaces. This may cause the interface not to show up on the list of
interfaces in the "Capture Options" dialog."
http://winpcap.polito.it/misc/faq.htm#Q-6
"Q-6: Can I use WinPcap on a PPP connection?
A: We have tested WinPcap on PPP connections under Windows 95, Windows
98 and Windows ME. In Windows 95, due to a bug in NDIS, WinPcap
sometimes resets the PPP connection. In Windows 98/ME this bug appears
to be corrected, and WinPcap seems to receive correctly, however it is
not able to send packets. Under Windows NT/2000/XP there are problems
with the binding process, that prevent a protocol driver from working
properly on the WAN adapter. The problem is caused by the PPP driver of
WinNTx, ndiswan, that doesn't provide a standard interface to capture."