[WinPcap-users] Problem to list packet with pcap_next_ex

2004-04-19 Thread Julien Seignalet
Hello all, First time I used this mailing list so hello all :) I program a c++ software to capture network traffic and analyze it so Winpcap is very useful :) But i got an issue with the pcap_next_ex function. I explain: In my code i analyze the paket as soon as they arrived and it works

[WinPcap-users] Capture on many interfaces with pcap

2004-04-19 Thread Andreas Rieke
Hi, I am using pcap/WinPcap to capture traffic on linux and windows operating systems. I need to work on several interfaces in parallel and expect high load, however, as the filter function should drop more than 99 percent of the traffic, receiving packets from pcap should not be the problem. My

Re: [WinPcap-users] WinPcap NMap

2004-04-19 Thread Gianluca Varenni
- Original Message - From: Alan S. Jones [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, April 18, 2004 9:43 PM Subject: [WinPcap-users] WinPcap NMap I have been watching some of the WinPcap 3.1 beta development along with NMap development. At one point I ran into some

Re: [WinPcap-users] Problem to list packet with pcap_next_ex

2004-04-19 Thread Gianluca Varenni
Hi. I'm not completely sure, because I don't know how the C_Paquet constructor works, but I think that the problem is that you are storing the pointer returned in pkt_data into your C_Paquet class. Unfortunately, this pointer is valid only up to the next call to pcap_next_ex (or

Re: [WinPcap-users] Winpcap 3.1 beta: Problem with packet length and captured length

2004-04-19 Thread Gianluca Varenni
Hi. We experienced a similar problem with one of our lab machines (using an intel server Fast Ethernet card). In practice some network cards (server nics, usually), are able to fragment outbound packets in smaller chunks (I don't know how, exactly), so they announce to protocol drivers (TCP-IP as

Re: [WinPcap-users] WinPcap NMap

2004-04-19 Thread Gisle Vanem
Alan S. Jones [EMAIL PROTECTED] said: I have been watching some of the WinPcap 3.1 beta development along with NMap development. At one point I ran into some problems with NMap after I upgraded to WinPcap 3.1 beta. Not figuring anything else out till I ran across some comments that made me

RE: [WinPcap-users] Winpcap 3.1 beta: Problem with packet length and captured length

2004-04-19 Thread Pawan Singh
I read about offload TCP segmentation. Does winpcap capture packets before or after segmentation? Pawan Singh [EMAIL PROTECTED] 650 776 3958 -Original Message- From: Gianluca Varenni [mailto:[EMAIL PROTECTED] Sent: Monday, April 19, 2004 4:58 AM To: [EMAIL PROTECTED] Subject: Re:

Re: [WinPcap-users] Winpcap 3.1 beta: Problem with packet length and captured length

2004-04-19 Thread Gianluca Varenni
On Mon, 19 Apr 2004 08:32:55 -0700 Pawan Singh [EMAIL PROTECTED] wrote: I read about offload TCP segmentation. Does winpcap capture packets before or after segmentation? Before, since segmentation is done on the NIC itself. Have a nice day GV Pawan Singh [EMAIL PROTECTED] 650 776 3958