Re: How insecure are cable connections, versus dialup?
On Sun, Dec 08, 2002 at 08:15:18PM -0800, Paul Johnson wrote:
> Actually, according to to the RFCs, ports must respond saying they're
> closed or open, not just ignore it. Hosts must be pingable. That's
Stealth firewalls are in some cases better. If you DENY a packet, then
the remote end knows that something answered the request, as it got a
denied response back. If you DROP the packet the remote end gets
As with any of the RFCs, there comes a point were they need to be
re-examined and updated accordingly. IIRC, the original configurations
for MTAs suggested routing traffic for anyone (aka open-relay). With
the rampant abuse of this we now see just the opposite suggested.
Jamin W. Collins