Re: icmp: echo reply? Am I being attacked?

[Nuno Faria]

Micah Anderson wrote:
> 
> Is there any detrimental effect to disabling broadcast ICMP on the Linux
> side? Esseentiall doing a echo 1 >
> /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts?
> 

I haven't noticed any. I think that the original goal of pinging a
broadcast adress is to know which machines are on that network. When you
disable it, you just stop "announcing" your presence when someone asks
"who is on this network?". It is a service or utility that no longer
exists but is it that useful?

Nuno Faria


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