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RE: tcpdump how to? (darwin ne Wade Williams <email@hidden> wbie)
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RE: tcpdump how to? (darwin ne Wade Williams <email@hidden> wbie)


  • Subject: RE: tcpdump how to? (darwin ne Wade Williams <email@hidden> wbie)
  • From: Joe Kelly <email@hidden>
  • Date: Wed, 6 Mar 2002 18:37:57 -0800

Thanks to all who replied. I got what I needed by

sudo tcpdump -i en0 -s 512 -X

joe



> -----Original Message-----
> From: Josh Graessley [mailto:email@hidden]
> Sent: Wednesday, March 06, 2002 3:28 PM
> To: email@hidden
> Subject: Re: tcpdump how to? (darwin ne Wade Williams
> <email@hidden>wbie)
>
>
> On 3/6/02 2:44 PM, "Wade Williams" <email@hidden> wrote:
>
> > W>hen I looked at the man page for tcpdump, I thought it was saying
> >> that it only shows packet headers, not entire packets,
> hence the need
> >> for tcpflow. But maybe I was mistaken. (I'm pretty much a Darwin
> >> newbie too.)
> >
> > You were not mistaken. TCPDump shows only headers. You
> need tcpflow if you
> > wish to see packet data.
>
> Actually, that's not entirely true. You can use the -s option
> to specify the
> maximum length of packet data to display and -X to display the packets
> contents.
>
> example:
> sudo tcpdump -s 1500 -nXi en0
>
> The -n as noted before keeps tcpdump from wasting it's time and yours
> looking up the names of addresses.
>
> -josh
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