RE: nnamp question


nmap -e fx0 -v -sP 192.168.128.0/23

-> is a "Ping Scan however, and this does not require root privilages...

-sP (Ping Scan)
-v (Increase verbosity level)
-e <iface>: Use specified interface

Error:
getinterfaces: Failed to open ethernet interface (el0) QUITTING!

Which seems to indicate that nmap is being told to look for an interface
that can't/doesn't exist...
el is an old 3Com ISA card

You mentioned using ethernet device "fx0" - did you mean "fxp0", the
Intel Intel EtherExpress Pro/100 style cards?
...or you may have already discovered this ;)

It might be worth checking exactly what interfaces and hardware you do
have on this system...
...and you could also try running the command without specifying the
interface directly and rely on the routing table to sort it out. Nmap
does not require the "-e" flag to run a "Ping Scan".

nmap -v -sP 192.168.128.0/23

Hope this helps!

Kind Regards,
Tim Arneaud



-----Original Message-----
From: owner-freebsd-security@xxxxxxxxxxx
[mailto:owner-freebsd-security@xxxxxxxxxxx] On Behalf Of Pietro Cerutti
Sent: Sunday, 5 February 2006 9:42 PM
To: gahn
Cc: freebsd security
Subject: Re: nnamp question

On 2/4/06, gahn <ipfreak@xxxxxxxxx> wrote:
Hi:

Hi,

nmap -e fx0 -v -sP 192.168.128.0/23

Starting Nmap 3.95 ( http://www.insecure.org/nmap/ ) at 2006-02-04
14:04 CST
getinterfaces: Failed to open ethernet interface (el0) QUITTING!

What did I do wrong?

Are you running nmap as root? If not, you should. Only root can put
interfaces in promiscuous mode.


Thanks

Hope this helps,
regards

--
Pietro Cerutti
<pietro.cerutti@xxxxxxxxx>

Non lasciar calpestare i TUOI diritti!
Don't let 'em take YOUR rights!

NO al Trusted Computing!
Say NO to Trusted Computing!

www.no1984.org
www.againsttcpa.com
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