Frimmel, Ivan (ISS South Africa) wrote:
Again from IP 101(many years back so I could be wrong ) What about
pinging the broadcast .. This should highlight some less talkative ips
on the local subnet ? And localise icmp traffic .. Ideal for small
networks ?
Nope. Most machines don't respond to pings to the broadcast address
anymore, for good reason. The old "smurf" attack used this, amongst
other mischief, so most well-behaved network stacks won't respond to
such crap. From some quick tests, looks like around 10-20% of network
hosts will respond, mostly printers and similar equipment.
Pinging from the firewall, no matter how you do it, is a *bad idea*.
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