Okay, found some stuff on the internet; this is it at the moment:
# $OpenBSD: PF firewall rules $
# ports: see /etc/services
# 21 = ftp
# 22 = ssh
# 25 = smtp
# 53 = domain
# 80 = www
# 110 = pop3
# 123 = ntp
# 631 = ipp (CUPS)
# 6667 = irc
tcp_pass = "{ 21 22 25 53 80 110 123 6667}"
udp_pass = "{ 53 110 }"
# scrub
scrub in all
# setup a default deny policy
block in all
block out all
antispoof for { bce0, wpi0 } inet
pass out on { bce0, wpi0 } proto tcp to any port $tcp_pass
pass out on { bce0, wpi0 } proto udp to any port $udp_pass
>
> Any help to make my pf settings more secure would be appreciated.
>
> To be sure; I am running pf on my laptop, and there is no other computer
> connected to my laptop.
>
> Jan