[Winpcap-users] Ping works only when ethereal is ON

[Sunil]

Hi,
Thanks for the mail.
The issue was something to do with the build environment with which the 
driver was compiled in the WINDOWS environment.We have changed the build 
environment(built with a working one) and we could see ICMP echoes when 
the PROMISCUOUS mode is turned OFF.
We did not go in to the details of build environment.
Regards,
Sunil

Gianluca Varenni wrote:
> My bet is that your miniport is not managing 
> OID_GEN_CURRENT_PACKET_FILTER correctly. When you start ethereal or 
> any other winpcap based application and you use it in promiscuous 
> mode, the WinPcap protocol driver sets the PACKET_FILTER to 
> NDIS_PACKET_TYPE_PROMISCUOUS. Otherwise it uses 
> NDIS_PACKET_TYPE_ALL_LOCAL.
>
> Do all the ICMP echo requests get "discarded" by the TCP/IP stack when 
> ethereal is off, or just some of them?
>
> Have a nice day
> GV
>
> ----- Original Message ----- From: "Sunil Dutt" 
> <sunil.d at redpinesignals.com>
> To: <winpcap-users at winpcap.org>
> Sent: Wednesday, July 02, 2008 6:11 AM
> Subject: [Winpcap-users] Ping works only when ethereal is ON
>
>
>> Hi,
>>  We are working on  USB based WinXP network WLAN station driver.
>> We are facing an issue with the ICMP(the association to the AP is done).
>> We do a ping request to the AP and also get the reply from the AP.We 
>> also indicate the received reply to the TCP/IP stack but the 
>> successive pings do not take place.
>> The same happens when the ethereal(packet sniffer ) is on.
>> When we close the sniffer the successive pings do not happen.
>> We could not find any relation between indication of the received 
>> packet to the TCP/IP stack and the ethereal.
>> The firewall in the case of WINDOWS is TURNED OFF.
>> Can anyone comment on this.
>>
>> Thanks in Advance
>> sunil
>>
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>
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