Am Freitag, den 17.08.2007, 19:08 +0200 schrieb Ralph Passgang:
> Am Donnerstag, 16. August 2007 16:48:25 schrieb Sebastian Palarus:
> > Hi all,
> >
> > I try to filter the traffic between wan and lan ports over a bridge, but
> > it doesn't work. Here my config
> >
> > FreeWRT 1.03 (download @ http://wib.freewrt.org)
> > Linksys WRT54GL
> >
> > ----/etc/network/interface
> > # LAN ports
> > auto eth0.0
> > iface eth0.0 inet manual
> >         switch-ports 0 1 2 3 5*
> >
> >
> > # WAN port
> > auto eth0.1
> > iface eth0.1 inet manual
> >         switch-ports 4 5
> > ----
> >
> > ----/etc/fw/setbridge.sh
> > /usr/sbin/brctl addbr br0
> > /usr/sbin/brctl addif br0 eth0.0
> > /usr/sbin/brctl addif br0 eth0.1
> > /bin/ip link set eth0.0 up
> > /bin/ip link set eth0.1 up
> > /bin/ip link set br0 up
> > /bin/ip link show
> > ----
> >
> > -the bridge works fine, but nothing is blocked
> > -tcpdump -i br0 shows all packets
> > -iptables doesn't know -m physdev
> >
> > What's the problem? netfilter (missing patch) ? nic-driver?
> 
> Normally ebtables is used for filtering a bridge, but I don't get the reason 
> why you need a bridge at all?!?
> 
> Just try this:
> 
>  # LAN + WAN ports
>  auto eth0.0
>  iface eth0.0 inet static
>         switch-ports 0 1 2 3 4 5*
>       address <your-ip>
>       netmask <your-netmask>
>       broadcast +
>       gateway <your gateway>
> 
> You can put the wan port in the same vlan as the lan ports, so the internal 
> switch will be used and you don't need the bridge.
> 
> a multiport-bridge is technically exactly a switch.
> 
> and even if you want the bridge anyways, why not configure it in your 
> interface file... something like this should work:
> 
> auto br0
> iface br0 inet static
>       bridge-ifaces eth0.0 eth0.1
>       address <your-ip>
>       netmask <your-netmask>
>       broadcast +
>       gateway <your gateway>
> 
> regards,
>  Ralph

Hi,

I want to protect some hosts, but in this networksegment I can't change
the networkconfiguration. So I can't add a routing firewall and I need a
bridge.
Yesterday i tried kamikaze, but the filtering over a bridge did not work
and iptables did not know -m physdev too. 

I don't need ebtables, because ebtables filter non-ip-packets.

But now I have a big problem. Accidental I enter 'vi <binfile>'.
Kamikaze answered with SegFaut and now the Router don't want boot
anymore . Next week I want try to rescue the router over serial (JP2),
but first I have to braze on a cable.
Has anybody experience and tips for me?

Now I see, that the package iptables-mod-extra_1.3.3-2_mipsel.ipk off
whiterussian really contains the file libipt_physdev.so. 
Dumm gelaufen;-)

regards,
Sebastian



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