From: Henrik Nordstrom <hno@marasystems.com>
To: Filipe Almeida <filipe@rnl.ist.utl.pt>,
Thomas Heinz <josef.k@mytomorrow.de>
Cc: netfilter-devel@lists.samba.org, netfilter@lists.samba.org
Subject: Re: Arbitrary Netmasks
Date: Tue, 28 May 2002 20:45:13 +0200 [thread overview]
Message-ID: <200205282045.14015@henrik.marasystems.com> (raw)
In-Reply-To: <5.1.1.2.2.20020528150443.00b9ad58@ns.rnl.ist.utl.pt>
Which is not generally a valid thing to assume.. the .255 and/or .0
address may be in use on larger networks, especially if addresses are
assigned dynamically using a large DHCP scope..
On Tuesday 28 May 2002 16:07, Filipe Almeida wrote:
> I usually use:
>
> iptables -A FORWARD -s 0.0.0.255/0.0.0.255 -j DROP
> iptables -A FORWARD -d 0.0.0.255/0.0.0.255 -j DROP
> iptables -A FORWARD -s 0.0.0.0/0.0.0.255 -j DROP
> iptables -A FORWARD -d 0.0.0.0/0.0.0.255 -j DROP
>
> to stop routing of broadcasted packets. This works assuming you
> only have 256 sized classes.
next prev parent reply other threads:[~2002-05-28 18:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3CF383A9.7000106@mytomorrow.de>
2002-05-28 14:07 ` Arbitrary Netmasks Filipe Almeida
2002-05-28 18:45 ` Henrik Nordstrom [this message]
2002-05-29 9:57 ` Filipe Almeida
2002-05-28 15:03 ` Patrick Schaaf
2002-05-28 18:53 ` Henrik Nordstrom
[not found] <Pine.LNX.4.44.0205281532550.12350-100000@dlang.diginsite.com>
2002-05-29 5:22 ` Thomas Lussnig
[not found] <20020528132402.GN9802@ns>
2002-05-28 13:30 ` Joost Remijn
2002-05-28 13:35 ` Thomas Heinz
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