Hi.

On Tue, 26 Aug 2014 23:12:05 +0100
"Karl E. Jorgensen" <k...@jorgensen.org.uk> wrote:

> > > 4) sysctl --system
> > sysctl --system
> > * Applying /etc/sysctl.d/99-sysctl.conf ...
> > net.ipv4.icmp_echo_ignore_all = 0
> > net.ipv4.icmp_echo_ignore_broadcasts = 0
> 
> These caught my eye: Ignore all ICMP ? That would stop ping
> (a.k.a. ICMP echo) from working, wouldn't it?

In this case 0 means 'false'. I.e. 

net.ipv4.icmp_echo_ignore_broadcasts = 0

equals to 

'do not ignore icmp echo broadcasts'.

Reco


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