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- WINDOWS MONITOR NETWORK TRAFFIC PER PROCESS MANUAL
- WINDOWS MONITOR NETWORK TRAFFIC PER PROCESS WINDOWS
In the event that we only want to sniff specific traffic (eg.: only TCP/IP packets, only packets going to port 23, etc) we must create a rule set, "compile" it, and apply it. Just like opening a file for reading or writing, we must name our sniffing session so we can tell it apart from other such sessions. How do we differentiate between them? Using file handles. We can, if we want to, sniff on multiple devices. This is where we actually tell pcap what device we are sniffing on. We can either define this device in a string, or we can ask pcap to provide us with the name of an interface that will do the job.
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In Linux this may be something like eth0, in BSD it may be xl1, etc. We begin by determining which interface we want to sniff on. The first thing to understand is the general layout of a pcap sniffer. Then we tell pcap to apply it to whichever session we wish for it to filter. The compilation is actually just done by calling a function within our program it does not involve the use of an external application. The rule set is kept in a string, and is converted into a format that pcap can read (hence compiling it.) This is a three phase process, all of which is closely related. In the event that we only want to sniff specific traffic (e.g.: only TCP/IP packets, only packets going to port 23, etc) we must create a rule set, compile it, and apply it. These circumstances what can be done using pcap?
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A packet sniffer could eventually figure out (via the port number) a process ID. It'd be extremely difficult to find out what's originated a certain call. Sadly a network sniffing tool works at the lowest level of the net stack, trying to catch everything, it's completely unaware of processes running on the OS.
WINDOWS MONITOR NETWORK TRAFFIC PER PROCESS WINDOWS
Libpcap run on most Unix-like operating systems, there also a Windows version named Winpcap ( Windows Packet Capture). The Libpcap API is designed to be used from C and C++, however there are many wrappers that allow its use from languages like Perl, Python, Java, C#, Ruby. Libpcap is an open source library that provides a high level interface to network packet capture system. Once you have your capture by whatever means, you can then use NetMon to filter on the executable of your application to examine the network traffic generated by it during the period you were monitoring.
WINDOWS MONITOR NETWORK TRAFFIC PER PROCESS MANUAL
There are other options, so you can see the manual using netsh trace /? To start a capture, and then: netsh trace stop If this is of interest, you can do: netsh trace start capture=yes traceFile=c:\tracefolder\tracename.etl You can capture directly from NetMon at the time you want to do it, or you can give yourself more flexibility with the netsh trace command by triggering it automatically. Putting that aside for one moment and focussing on the admin side of things (which is what you tend to get if you ask questions here), I would like to turn your attention to the netsh trace command and Microsoft Network Monitor (Netmon). Such introspection would probably require the use of ETW (Event Tracing for Windows), but again I can't be certain. If so, I think this may be a question better suited to StackOverflow since that is a developer community. From your comments, I gather you are trying to capture the network traffic generated by the application you are developing from within the application itself.