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Fwd: nmap
From: The Virtual One <virtual1 () vftp net>
Date: Wed, 5 Jul 2006 18:53:38 -0500

Interesting.  Why don't you resend this to nmap-dev.  Maybe someone
who has a Mac or uses IP of FW can help find a solution for the  


Begin forwarded message:

From: The Virtual One <virtual1 () vftp net>
Date: July 5, 2006 6:43:36 PM CDT
To: fyodor () insecure org
Subject: nmap

I am staying at family for the holiday week, and the easiest way  
for me to get internet with my laptop is to have mom's imac share  
ethernet over firewire.  So far it has been working very well (so  
long as we have the imac set to not sleep!) but I did find that  
nmap crashes when I try to run it when my primary interface is IPoFW.

PBG4:~ nfisher$ sudo nmap -sS vftp.net

Starting nmap 3.75 ( http://www.insecure.org/nmap/ ) at  
2006-07-05 18:35 CDT
FATAL: readip_pcap: bogus caplen from libpcap (1127219200) on  
interface type 138

Works fine over ethernet and wireless though.

Also fails for scan types T, F, X, N, P, V, U, O, A, W, R, L.  -P0  
also crashes.  Scans of unspecified type and I both appear to work.

Also, this crashes

PBG4:~ nfisher$ sudo nmap vftp.net

but this does not

PBG4:~ nfisher$ nmap vftp.net

So guessing it has something to do with custom packet building on  
IPoFW that's blowing things up?

- Nathan

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