Re: How do packet filtering?

==> [e-mail] (依偎的感覺) 提到:
: ※ 引述《[e-mail] (person)》之銘言：
: >         怎麼寫 c program 將 rejects the packets?
:     1. set your nic to the promicious mode.
:     2. while receving the packet, drop them depend on your filter policy.
        If i want immediately filter while receving the packet.
        How I do it?@@
        Does it use "divert socket" with ipfw in FreeBSD? I refer to "natd".
        I known that it can use libipq with iptables in Linux.
:     3. done.

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