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Re: [ns] about bpf
On Thu, 14 Jun 2001, Yao Shu wrote:
> hi,all
> I have some question about the bpf.
> 1, $bpf open readonly fxp0
> Does this mean that bpf read data from the interface "fxp0",
> but what kind of interface is "fxp0"?
Yes, it's a network interface. For example, you can use
'$bpf open readonly eth0' to access interface 'eth0'.
> 2, $bpf filter "icmp and dst $myaddr"
> What does it mean? Is filter a function?
you can find the syntax in 'man tcpdump'.
- difa
> thanks
>
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