Very Computer

PING 134.22.81.255 (134.22.81.255): 56 data bytes
ping: sendto: Permission denied
ping: wrote 134.22.81.255 64 chars, ret=-1
ping: sendto: Permission denied
ping: wrote 134.22.81.255 64 chars, ret=-1
ping: sendto: Permission denied
ping: wrote 134.22.81.255 64 chars, ret=-1

Isn't that supposed to work?
--
Paul Tomblin, Head - Automation Design Group.
Gandalf Canada Limited
This is not an official statement of Gandalf, or of Vicki Robinson.
"Hello, this is Linus Torvalds, and I pronounce Linux as Linux"

It most definitely should be disabled for normal users. Pinging the
broadcast address is an excellent way of bringing down a large network.
Some clueless person on my campus's network did exactly that from a
Linux box. I had the opportunity to see some logs of what resulted.
The clamor produced by upwards of a thousand machines suddenly attempting
to reply at the same time was quite interesting... The network services
people were NOT amused.

         - Damien

Password:

To err is human, to forgive is Not Company Policy.

vector:~# ping 134.22.81.255
PING 134.22.81.255 (134.22.81.255): 56 data bytes
ping: sendto: Permission denied
ping: wrote 134.22.81.255 64 chars, ret=-1
ping: sendto: Permission denied
ping: wrote 134.22.81.255 64 chars, ret=-1

--- 134.22.81.255 ping statistics ---
2 packets transmitted, 0 packets received, 100% packet loss

On a sun, as myself:
ptomblin:~> /usr/etc/ping -s 134.22.81.255
PING 134.22.81.255: 56 data bytes
64 bytes from dumbo.gandalf.ca (134.22.80.181): icmp_seq=0. time=5. ms
64 bytes from pluto.gandalf.ca (134.22.80.217): icmp_seq=0. time=135. ms
64 bytes from bubba.gandalf.ca (134.22.80.195): icmp_seq=0. time=172. ms
[etc]
----134.22.81.255 PING Statistics----
2 packets transmitted, 36 packets received, -1700% packet loss
round-trip (ms)  min/avg/max = 3/192/516

This is dead wrong - root should be able to broadcast ping.

--
Paul Tomblin, Head - Automation Design Group.
Gandalf Canada Limited
This is not an official statement of Gandalf, or of Vicki Robinson.
"Hello, this is Linus Torvalds, and I pronounce Linux as Linux"

: PING 134.22.81.255 (134.22.81.255): 56 data bytes
: ping: sendto: Permission denied
: ping: wrote 134.22.81.255 64 chars, ret=-1
: ping: sendto: Permission denied
: ping: wrote 134.22.81.255 64 chars, ret=-1
: ping: sendto: Permission denied
: ping: wrote 134.22.81.255 64 chars, ret=-1

Hi Paul,

        no, it's *not* supposed to work. But we wrote a `pong' here,
which does exactly the thing that you want. Email me, if you like to
have a copy...

Regards,
        Teggy

--


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