> Can I just start with how to block all icmp, that is drop all ping
> requests without response, for now? I promise to be good, no matter
> how frustrated I get. Pretty please . . .

This will stop replying to pings:

sysctl -w net.ipv4.icmp_echo_ignore_all=1

To turn replies back on:

sysctl -w net.ipv4.icmp_echo_ignore_all=0

Motorcycling, Boating and openSUSE:
"Why wait any longer for the world to begin?
You can have your cake and eat it, too." Bob Dylan