On Fri, 2003-07-18 at 15:15, Munir Nassar wrote:
> On Fri, 18 Jul 2003, Clay Fandre wrote:
> 
> > nmap? fping? ping in a shell loop?
> 
> how about ping -b <broadcast> ?
> 
> all hosts in that subnet should reply.

Many systems don't respond to this anymore.  Linux systems can be told
to ignore broadcast pings with

        echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts

And I've even noticed that some Windows systems don't respond to
broadcast pings anymore.

-- 
 _  _  _  _ _  ___    _ _  _  ___ _ _  __   We have a equal opportunity
/ \/ \(_)| ' // ._\  / - \(_)/ ./| ' /(__   Calculus class -- it's
\_||_/|_||_|_\\___/  \_-_/|_|\__\|_|_\ __)  fully integrated.
[ Mike Hicks | http://umn.edu/~hick0088/ | mailto:hick0088 at tc.umn.edu ]
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