blackhole in PF possible?

[James Seward]

On Sun, May 25, 2008 at 9:14 AM, Ighighi Ighighi <ighighi at gmail.com> wrote:
> blackhole(4) is hardly a feature if it applies to loopback interfaces
> as well.  Its intended functionality
> ("to slow down anyone who is port scanning a system", according to the
> manpage) also slows down
> internal services because those TCP RST's and ICMP Port Unreachable's
> are never seen.
>
> Is there a way to get the same functionality in PF so I can restrict
> those packets to external interfaces ?

Have a look at "set block-policy" and "block return" in the man page
for pf.conf.

/JMS