[expert] Disallowing ping requests to a specific machine

[Lee Wilson]

    I have a machine that is getting flooded with ping requests to the point
where it's saturating our T1 line.  I don't want to turn off pings to the
entire class C IP block with our firewall, but I'm not sure

1) how to turn off pings to a single IP address
2) if turning off pings at a single IP address will stop our T1 from being
saturated anyway.

Anyone have any advice on how to handle the problem?