Steinar,

Thank you for your answer. I will try that.

Regards,

Alain.


At 04:42 PM 12/11/2001 +0100, [EMAIL PROTECTED] wrote:
> > I would like to know if it is possible to filter with PCAP on a range of
> > ports by using  "pcap_compile" function.
> >
> > I tried several filter expressions but each one was rejected by the
> > function  :
> >
> > Examples of expressions I tried  :
> >
> > "ip and (port >= 1000 and port <= 2000)"
> > "ip and (port 1000 >= port 2000)"
>
>Not directly, as far as I know. But you can do things like
>
>"tcp[2:2] >= 1000 and tcp[2:2] <= 2000"
>



>to filter on TCP destination port within a specified range.
>
>Steinar Haug, Nethelp consulting, [EMAIL PROTECTED]

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