> This is where you find, read and implement the Firewalling HOWTO.
The issue here is not Firewalling....it is detecting scans.
As regards Firewalling...if I have a router and put a deny
all and leave port 80 open, a host program will not
inform you of a portscan...therefor Firewalling
is useless in this case at least.
> Of course, you still have to ensure that the applications running on
> the still-open ports are up to date.
Once again off the point.
> I believe there is a way to get Portsentry to use ipchains to block
> IPs that are port-scanning you, which may be helpful.
The point being made is that showing open ports
and setting off alarm bells and exploits flying at you is the
wrong thing...transparent yet clearly viewable
logging of such events is what is needed.
--
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