Brandon Vincent wrote:
On Tue, Sep 15, 2015 at 5:55 AM, Per Jessen
wrote: And the arp table is nicely populated afterwards.
Most devices and operating systems will not respond to broadcast ICMP pings. It's very easy to do smurf denial of service attacks when devices respond. For example, I think most GNU/Linux distributions have net.ipv4.icmp_echo_ignore_broadcasts = 1 set. Some devices may respond, printers, etc. but this is far from an effective technique.
That's true - in fact, none of the devices that responded to my own broadcast ping were Linux boxes. They were telephones, printers, routers, remote service cards etc. -- Per Jessen, Zürich (17.9°C) http://www.dns24.ch/ - your free DNS host, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org