Security
Stations that should not announce their service states should disable broadcasting. While setting the broadcast addresses to the same ip address of the station works, it's not a best practice. This will disable that station from learning of other broadcast traffic in the network. If the service in question alone provides too much information, you should consider disabling or removing it.
Some Denial of service attacks use broadcast amplification to elicit replies from a broadcast address to a spoofed victim. Routers should use ACLs or filtering to drop unwanted external to local broadcast traffic. This will prevent local stations from replying. Many Operating Systems have additional configuration to enable/disable broadcast replies.
- Linux via procfs
$ cat /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
Read more about this topic: Broadcast Traffic
Famous quotes containing the word security:
“The reins of government have been so long slackened, that I fear the people will not quietly submit to those restraints which are necessary for the peace and security of the community.”
—Abigail Adams (1744–1818)
“We now in the United States have more security guards for the rich than we have police services for the poor districts. If you’re looking for personal security, far better to move to the suburbs than to pay taxes in New York.”
—John Kenneth Galbraith (b. 1908)