On Fri, 18 Jan 2008 12:56:45 -0500 (EST), Hakan wrote:
>Dave,
>
>>>To really trace TCP/IP traffic contents you need a sniffer
>>>program that can do that. There are quite a few for Windows
>>>and Linux, but I am not sure there is something for OS/2.
>>>
>>>These programs have device-drivers that hook to the
>>>network card and can filter out and interpret TCP/IP
>>>(or other protocols) packets from there.
>>>
>>>There are also dedicated LAN-sniffer machines that
>>>can be attached to a router or switch that can monitor
>>>or trace the traffic on a whole LAN ...
>>
>>I *think* it depends on VPC using virtual switch or not. In the former
>>case a sniff on the host will *not* see any packets, I know 'cos I
>>tried it, but the fake NAT the other mode uses ought to show up.
>>
>>Also bear in mind that if you use say a *nix box on the network to
>>sniff then you need a hub and not a switch. Otherwise the sniffer won't
>>see anything. There are methods around to sniff switches but it is a
>>lot of faffing about. I keep a hub on my network and if I need to sniff
>>a box I move it's ethernet cable and the *nix box's one to the hub.
>
>I was hoping that the 'net traffic originated by the Win application
>running in VPC would then be "managed" by the host operating system,
>i.e., eCS 1.2MR in my case, and that a program that logs all network
>card traffic would log also this traffic. Given that I would not do
>anything else on the 'net at the same time, I am hoping that it would
>be feasible to figure out what the Win application sends and receives.
>
>
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