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Date:      Tue, 14 Sep 2010 21:57:21 -0500
From:      Brandon Gooch <jamesbrandongooch@gmail.com>
To:        Gareth de Vaux <bsd@lordcow.org>
Cc:        ipfw@freebsd.org
Subject:   Re: phantom rules
Message-ID:  <AANLkTikjBA4aBXJ1JO%2B28CkNmcbC4qYkcmueTQhPnA0J@mail.gmail.com>
In-Reply-To: <20100909131733.GA21535@lordcow.org>
References:  <20100909131733.GA21535@lordcow.org>

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On Thu, Sep 9, 2010 at 8:17 AM, Gareth de Vaux <bsd@lordcow.org> wrote:
> Hi all, for some reason these rules get loaded on boot up before the
> ones I specify in a file:
>
> 00100 =A0 0 =A0 =A0 0 allow ip from any to any via lo0
> 00200 =A0 0 =A0 =A0 0 deny ip from any to 127.0.0.0/8
> 00300 =A0 0 =A0 =A0 0 deny ip from 127.0.0.0/8 to any
> 00400 =A0 0 =A0 =A0 0 deny ip from any to ::1
> 00500 =A0 0 =A0 =A0 0 deny ip from ::1 to any
> 00600 =A0 0 =A0 =A0 0 allow ipv6-icmp from :: to ff02::/16
> 00700 =A0 0 =A0 =A0 0 allow ipv6-icmp from fe80::/10 to fe80::/10
> 00800 =A0 0 =A0 =A0 0 allow ipv6-icmp from fe80::/10 to ff02::/16
> 00900 =A0 0 =A0 =A0 0 allow ipv6-icmp from any to any ip6 icmp6types 1
> 01000 =A0 0 =A0 =A0 0 allow ipv6-icmp from any to any ip6 icmp6types 2,13=
5,136
>
> I just flush this manually but how do I stop the behaviour properly?
>
> My rc.conf entries:
>
> firewall_enable=3D"YES"
> firewall_type=3D"/usr/local/etc/firewall"
> firewall_logging=3D"YES"

I would begin by reading:

$ man 7 firewall
$ man 5 rc.conf
$ less /etc/rc.firewall

I think the source of /etc/rc.firewall may be most enlightening in
regard to the behavior in question (setup_loopback(),
setup_ipv6_mandatory(), etc...).

Have fun, and don't get discouraged (speaking from experience)

:)

-Brandon



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