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Network 7 — How do I configure the Berkeley Packet Filter and capture tcpdump traces?

April 26, 2017Berkeley capture configure filter Network packet tcpdump traces

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Network 7 — How do I configure the Berkeley Packet Filter and capture tcpdump traces?

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1) Installing packet filter support tcpdump relies on a kernel option that ordinarily isn’t enabled. You can fix this either by adding “options PACKETFILTER” to the system’s configuration file and rebuilding (via doconfig -c ) or by: # doconfig *** KERNEL CONFIGURATION AND BUILD PROCEDURE *** Enter a name for the kernel configuration file.