storing network data packets

ho开发者_如何学Gow to store all messages flowing trough the network card (or only with given ip address) in linux operating system and store it to a file?

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You should have a look to tcpdump / libcap. Of course there are many great packet sniffer based on these libraries that you can use to retrieve and store any traffic going through your network card.

http://www.tcpdump.org/