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I am working on project using libpcap. Now, I need to know the direction of packet (inbound or outbound) once I got the packet in callback function. I am going to write the methods to compare IP and MAC address between client and these information extract from packet. Am I right?
Could you please help me some comments or advices on this problem?
Thank you for your time.
The source or target IP address is sufficient. If the source is local, it's outbound. If the target is local, it's inbound. If neither, it's a promiscuous sniff.