dumping net traffic to log file

[Alexey Karguine]

Do you have string `device          bpf ` in youe kernel config?


2006/7/25, Steel City Phantom <scphantm at yahoo.com>:
>
>    im trying the command
>    tcpdump -i em0 > traffic.log
>    and i get the response
>    tcpdump: (no devices found) /dev/bpf0: No such file or directory
>    im doing it as root.  this is a dell poweredge 2850 and we are using
>    the standard gigabit network cards that came onboard.  here are the
>    details on the nic
>    em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>            options=b<RXCSUM,TXCSUM,VLAN_MTU>
>            inet 192.168.245.246 netmask 0xffffff00 broadcast
>    192.168.245.255
>            ether 00:13:72:56:aa:ca
>            media: Ethernet autoselect (100baseTX <half-duplex>)
>            status: active
>    in my dev directory em0 is mapped to net1.  when i try the same
>    command with net1, i get the same thing.
>    Darrin Chandler wrote:
>
> On Mon, Jul 24, 2006 at 03:20:32PM -0400, Steel City Phantom wrote:
>
>
> i am troubleshooting an application and am having a hell of a time with
> it.  with bsd 6.1 is there a way where i can dump all traffic coming
> over the nic to a log file so i can see exactly what is coming in?
>
>
> tcpdump works nicely for this. :)
>
>
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-- 
Alexey Karguine