On Thu, Oct 25, 2007 at 14:44:44 -0400,
Andrew Parker <andrewparker(a)bigfoot.com> wrote:
If you reject the packets, the remote hosts knows that your hosts
exists and is up, but won't know why it can't connect. The remote
host knows this very quickly.
The ICMP packet used for the reject can use one of several different codes
to explain why the connection was rejected.