On Wed, Jul 24, 2002 at 01:57:22PM +0200, Fede wrote:
> we're writing to you to know if you can solve our problem about tcpdump.
> By using your program , we're only able to know when the source host sends a
> packet to a destination host,
> but we don't know if there is the possibility to know when the destination
> host receives the packet: is there an option in tcpdump that we can use to
> print this time?
The only way to use tcpdump to know when a given host receives a packet
is to run tcpdump on that host, and capture traffic going to that host,
or to run some other packet capture software on that host and:
if that software writes packets out in tcpdump format, read that
capture in tcpdump
or
if that software doesn't write packets out in tcpdump format,
convert the capture to tcpdump format, if possible, and read it
in tcpdump.
The only thing tcpdump sees is packets sent by or to the machine running
tcpdump, and that doesn't tell you, for a packet sent by a machine, when
it's received by the destination machine.
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