A couple of problems with NMAP on Redhat 7.1

[Joe Dauncey <toothbrushhead () yahoo com>]

Hi,

I hope it's OK for me to report a couple of end-user problems with NMAP.

I am using Redhat 7.1 on an Intel processor.

My first problem was when I downloaded the source for nmap-2.53. When I 
compiled it with a 'make' (after a ./configure) I got the error message:
tcpip.h:358: conflicting types for 'inet_aton'
/usr/include/arpa/inet.h:74: previous declaration of 'inet_aton'
make: *** [nmap.o] Error 1

As I'm a bit of a dullard with code I decided to take the easy way out and 
install the RPM. So I used nmap-2.53-1.i386.rpm (and then installed 
nmap-frontend-0.2.53-1.i386.rpm)
This installed fine.
However, when I do a 'nmap x.x.x.x' as root I get the following error:
Starting nmap V. 2.53 by fyodor () insecure org ( www.insecure.org/nmap/ )
pcap_open_live: unknown physical layer type 0x320
There are several possible reasons for this, depending on your operating 
system:
LINUX: If you are getting Socket type not supported, try modprobe af_packet 
or recompile your kernel with SOCK_PACKET enabled.
*BSD:  If you are getting device not configured, you need to recompile your 
kernel with Berkeley Packet Filter support.  If you are getting No such 
file or directory, try creating the device (eg cd /dev; MAKEDEV <device>; 
or use mknod).
SOLARIS:  If you are trying to scan localhost and getting '/dev/lo0: No 
such file or directory', complain to Sun.  I don't think Solaris can 
support advanced localhost scans.  You can probably use "-P0 -sT localhost" 
though.


QUITTING!

When I do a 'modprobe af_packet' I get:
modprobe: Can't locate module af_packet

I'm not really sure how to enable SOCK_PACKET in my kernel. You see I 
haven't changed the kernel since I installed the whole distribution, and I 
would have thought it would work OK with that.

Could the physical layer type be a problem because it's a token ring 
network I am using the machine on? I didn't realise that NMAP worked at 
that low level?

Anyway, any thoughts on fixing this would be appreciated.

Thanks,

Joe Dauncey

Email: toothbrushhead () yahoo com
PGP Key ID: 0xEAA034D4


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