You would need to call libnet_build_udp(), libnet_build_ipv4() and libnet_build_ethernet(), in this particular order.Ĥ) Prepare for sending another packet by doing one of the following:Ĥa) Clear the packet with libnet_clear_packet(). Say you’d like to build a UDP packet over IPv4 over Ethernet, with full control over all headers. Here’s what you need to do to start injecting packets:Ģ) Build all headers, from the highest layer to the lowest. You can download all the sample code you’ll find throughout this tutorial here. You can download the most up-to-date version of libnet I know of here (development goes on here). Receiving packets and checking your ownīefore you try any of this, you need to have libnet installed and you need to know how to use su (or sudo).
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