From mboxrd@z Thu Jan  1 00:00:00 1970
From: Antony Stone <Antony@Soft-Solutions.co.uk>
Subject: Re: script firewall
Date: Tue, 20 Apr 2004 21:32:46 +0100
Sender: netfilter-admin@lists.netfilter.org
Message-ID: <200404202132.46630.Antony@Soft-Solutions.co.uk>
References: <20040420202155.44738.qmail@web40503.mail.yahoo.com>
Reply-To: netfilter@lists.netfilter.org
Mime-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Return-path: <netfilter-admin@lists.netfilter.org>
In-Reply-To: <20040420202155.44738.qmail@web40503.mail.yahoo.com>
Errors-To: netfilter-admin@lists.netfilter.org
List-Help: <mailto:netfilter-request@lists.netfilter.org?subject=help>
List-Post: <mailto:netfilter@lists.netfilter.org>
List-Subscribe: <https://lists.netfilter.org/mailman/listinfo/netfilter>,
	<mailto:netfilter-request@lists.netfilter.org?subject=subscribe>
List-Id: <netfilter.vger.kernel.org>
List-Unsubscribe: <https://lists.netfilter.org/mailman/listinfo/netfilter>,
	<mailto:netfilter-request@lists.netfilter.org?subject=unsubscribe>
List-Archive: <https://lists.netfilter.org/pipermail/netfilter/>
Content-Type: text/plain; charset="iso-8859-1"
To: netfilter@lists.netfilter.org

On Tuesday 20 April 2004 9:21 pm, Luis GUSTAVO wrote:

> but in this machine i have e-mail (25) and (110).

Thanks for mentioning that.

How about

iptables -A INPUT -p tcp --dport 25 -j ACCEPT
iptables -A INPUT -p tcp --dport 100 -j ACCEPT

Regards,

Antony.

> Antony Stone <Antony@Soft-Solutions.co.uk> wrote:
>
> On Tuesday 20 April 2004 8:53 pm, Luis GUSTAVO wrote:
> > I=B4m looking for a firewall script, for my ADSL conection, and share
> > my conection.
> >
> > And i want block ports 1024:65535
>
> I assume you mean you want to block *incoming* ports (in which case I
> wonder why you only want to block above 1023), so how about this:
>
> iptables -P INPUT DROP
> iptables -P FORWARD DROP
> iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
> iptables -A FORWARD -i $int_IF -o $ext_IF -j ACCEPT
> iptables -A POSTROUTING -t nat -o $ext_IF -j MASQUERADE
>
> Let us know if you have any problems with it, or if there is anything I
> didn't understand from your requirements.
>
> Regards,
>
> Antony.

--=20
Microsoft may sell more software than any other company, but McDonald's s=
ell=20
more burgers than any other company, and I think the other similarities a=
re=20
obvious...

                                                     Please reply to the =
list;
                                                           please don't C=
C me.