Berkeley Packet Filter: Unix-like, Promiscuous mode, Computer network, Operating system, Kernel, Buffer - Softcover

 
9786131691270: Berkeley Packet Filter: Unix-like, Promiscuous mode, Computer network, Operating system, Kernel, Buffer

Inhaltsangabe

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Berkeley Packet Filter or BPF provides, on some Unix-like systems, a raw interface to data link layers, permitting raw link-layer packets to be sent and received. In addition, if the driver for the network interface supports promiscuous mode, it allows the interface to be put into that mode, so that all packets on the network, even those destined for other hosts, can be received. In addition, it supports "filtering" packets, so that only "interesting" packets can be supplied to the software using BPF; this can avoid copying "uninteresting" packets from the operating system kernel to software running in user mode, reducing the CPU requirement to capture packets and the buffer space required to avoid dropping packets.

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