Hi there,

I'd like to find out via tcpdump which hosts are directly accessing our
printers.

Therefore, I simply entered

$ tcpdump dst host trota

whith trota being the printer.

The trouble I had was that tcpdump only printed packets sent form the
host actually doing the sniffing.

On entering

$ tcpdump

I get all packets that are either sent or received by my computer or
broadcast packets (e. g. Netbios-datagrams).

My question is whether it's possible to overhear the transport between
two other hosts on the net, e. g.

$ tcpdump host x and y

I tried this on our net but it did not work, as I described above. Did I
use wrong expressions in the command or is this simply not possible?

Cheers,

Florian

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