Re: [WinPcap-users] I need help using the rpcap functionality with Ethereal

[Gianluca Varenni]

Title: I need help using the rpcap functionality with Ethereal

Hi.   Regarding your question about PPP/WAN support, I think that that Ethereal error message is somewhat misleading: winpcap 2.3 supported PPP/WAN but, due to the large number of user problems (blue screens), we disabled PPP support into winpcap 3.0.   We have enabled PPP support again in WinPcap 3.1beta (using a completely different technique), that has been released a couple of weeks ago. Note that PPP is NOT supported on NT4.   I suggest you to try this beta release.   Have a nice day GV   ----- Original Message ----- From: Palmer Thomas J Civ HQ SSG/ENEM To: [EMAIL PROTECTED] Sent: Tuesday, February 24, 2004 9:56 PM Subject: [WinPcap-users] I need help using the rpcap functionality with Ethereal All, I put the following string in the capture interface for ethereal: rpcap://10.2.3.4:2002/12345 A capture of my communications with the remote rpcapd reveals that my PC sent the following 16 bytes of TCP data to the remote daemon: 0x00 0x08 0x00 0x00 0x00 0x00 0x00 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 The remote agent replies with 64 bytes of TCP data, part of which is the following message: Authentication failed; NULL autentication not permitted. Ethereal then gives me the following error message: The capture session could not be initiated (Authentication failed; NULL autentication not permitted.). Please check that you have the proper interface specified. Note that the WinPcap 2.x version of the driver Ethereal uses for packet capture on Windows doesn't support capturing on PPP/WAN interfaces in Windows NT/2000/XP/2003 Server, and that the WinPcap 3.0 and later versions don't support capturing on PPP/WAN interfaces at all. Anyone know what the problem is??????????