icmp packets - disabling via sysctl, or cisco switch ... ?

[Bill Moran]

User Freebsd wrote:
> 
> Two part question here ...
> 
> first part ... is there a way of just disabling icmp by setting a 
> sysctl, so that a server just doesn't respond to them?
> 
> second part ... is there a way of telling a cisco switch to drop all 
> icmp packets, preferrably to all but an exception list, but to 
> everywhere works as well ...

Sure, just uninstall TCP/IP.  ICMP isn't needed unless you're using
TCP/IP.