On Fri, Jun 20, 2008 at 02:10:52PM -0700, Robert Gilaard wrote:
> Hi folks,
> 
> All the time I had the following entries in my pf.conf for my Desktop
> system.
> However, as I've bought this pf book that was lately released, I begin
> to suspect that these rules are way to liberal.
> 
> If I only want to be able to browse the web and maybe use ssh-client,
> how should I rewrite the rules so that only those ports are open
> (80,443 and 22)?
> 
> I guess i'm looking forward to a RTFM answer, but hey, I wouldn't ask
> if I knew how to write them.
> 
> The best I could guess is:
> 
> pass out on $int_if proto tcp from any to any port 80 modulate state
> flags S/SA
> 
> But I don't know if this is correct.
> 
> Brgds
> Robert

If it's just a simple workstation with a single user, I see no reason
for restricting outgoing traffic. If you really want this, remember to
also allow DNS queries (port 53, tcp+udp).

Let me point you to some of Peter Hansteen's goodies:

  http://home.nuug.no/~peter/pf/en/minimal-ruleset.html

(you should also click "Next" when you get to the bottom of that page)

The full table of contents:

  http://home.nuug.no/~peter/pf/en/

Martin

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