On Sun, 2003-11-30 at 13:12, Thomas Preissler wrote: > > how do I really make a computer totally invisibly as it would be > when it does not exist? Leave the power switch in the "off" position. ;-) > It is clear, that the simplest solution is to DROP all incoming > packets, Actually, dropping packets is a clear indication that you do in fact have a firewall protecting one or more systems. Its the only condition which will cause ICMP error packets to not be returned consistently. You would be better off rejecting with host unreachables. then your firewall looks like a simple router, and the host in question looks like it is powered down. HTH, C
