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So unfortunately I believe you'll have to write some level of kernel code to perform the actions you want. IPSec for example keeps its security policies in the kernel while a userland daemon keeps track of tunnel connections. MACSec at some point will be implemented in the kernel.
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Great resource for an in-depth look at the network stack. Type in Wireless Diagnostics, and press enter when it appears at the top of the list in Spotlight 3. I would also suggest picking up Linux Kernel Networking: Implementation and Theory by Rami Rosen. Follow these instructions to perform a wireless packet capture in macOS. My answer here gives several good links for learning about Linux kernel networking. This would probably be your best bet, as you don't want to start mucking about with the kernel, and rebuilding it just for your own project. The virtual NIC would see all of the data just as the real NIC does. To help you sort through the various solutions on the market, I’ve put together a list of my favorite packet loss test tools. That way you could process the data as you see fit. A good packet loss checker will enable you to monitor your system and manage packet loss.
Best packet capture tool for mac driver#
Or you could write a driver to be a virtual NIC.
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If you want to manipulate the MAC header and do your own thing you'll have to insert yourself right after the MAC header is received, and before the IP processing. Wireshark can run on all major operating systems. Wireshark lets you dissect your network packets at a microscopic level, giving you in-depth information on individual packets. Since the MAC header doesn't require very much processing the IP layer handler is the first one that starts to performing a lot of the processing. Best Packet Capture Tool Download A File Manish Shivanandhan Follow Aug 15 6 min read Wireshark is a network analyzer that lets you see whats happening on your network. Anything that is registered to receive the next layer will have its handler called. When the interface receives data the processing begins immediately. PRTG can monitor packets on the router, switch, server, and VMware. It monitors IP packets and filtering according to UDP and TCP packets. It uses packet sniffers and NetFlow, IPFIX, sFlow, & jFlow. If you want to analyze the packet as the Linux kernel receives it you will have to write a kernel driver, possibly going as far as modifying the kernel itself. Paessler Packet Capture is the all-in-one monitoring tool that can monitor data traffic and analyze data packets.