Ok here is my issue.......
We r using an Ipsec tunnel which is a bunp to stack...
Now in linux it creates a virtual interface called ipsec0... Ethreal on 
linux uses libpcap and is able to dispaly the packets (decrypted) coming on 
this interface. 

Now in windows I am using ssh software for creating a tunnel. this creates a 
virtual interface on the registry so whern i search for the devices, this 
new virtual device also shows up. But ethereal in windows doesnt show the 
packets coming on this interface. 

Since ethereal uses winpcap & libpcap respectively .... y the diff in its 
behaviour for listening on the virtual interface? 

That apart... after creating this virtual interface on windows, i tried to 
use the winpcap
1. Netmask cannot be obtained if I try using the vitual interface 

 From what I gather the virtual interfaces dont have IP and netmask 
attributes assigned in the registry like non-virtual ones.............. 

 

Gianluca Varenni writes: 

> 
> ----- Original Message -----
> From: "Pradeep Victor" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Wednesday, August 28, 2002 3:54 AM
> Subject: [WinPcap-users] IPSEC packets 
> 
> 
>> Hi is it possible to capture the packets at the ipsec level after
> decrytion
>> using the winpcap functions?
> 
> No. WinPcap captures packets as they reach the network adapter. 
> 
>>
>> Does wincap has functions similar to windump to decrypt the packets
> captured
>> at the link layer? 
>>
> 
> WinPcap and windump are different things: 
> 
> -winpcap is a library (more precisely, it's an architecture) to capture raw
> data from the network.
> -windump is an app to decode network packets. 
> 
> If you want to decrypt IPsec, you have to decode it on your own (but you
> have the windump/tcpdump sources, you can use them!). 
> 
> GV 
> 
> 
>> Thanks
>> Pradeep 
>>
>>
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>  
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