[Soekris] OpenBSD pf transparent bridge - hardware tricks

[Luigi Rizzo]

On Sat, Feb 24, 2007 at 05:49:48AM -0800, Art Arica3D wrote:
> Hi,
> 
> I have done all my firewalls to date with a dedicated admin port (3
> legged) and I'm limited by this particular project to only 1 incoming
> network drop and I'm debating my options.
> 
> Normally I have a single network drop from ISP, I put in a small
> switch, then feed two incoming ports on the firewall.  However, in
> this case I can't come up with the extra power drop or space for a
> switch... I'm limited to just put in a 12 inch x 12 inch footprint
> with only 1 power drop.
> 
> Hardware question:
> I know of some PCI powered switches, has there been one found to be compatible?
> Any way to make the lan1641 act as a 4 port switch that acts
> independent of the OS?
> 
> I know these are long shots, but figured someone might have tried to
> solve the same problem here.

if you want to do a bit of tinkering, i am normally
using some cheap 5/8/16 port switches (Edimax, but many brands use the same hw)
based in the realtek chipset. (rtl8309 and the like, see on www.realtek.com.tw)

They cost close to nothing, take 12v supply (0.5A for the 8 port
version, 1A for the 16 port), but they
really have an internal switching regulator with 50v capacitors
(which makes me think they are designed for Power on Ethernet-like).
So you can stack the switch and the soekris one on top of the other,
and use the same power supply for both.

	cheers
	luigi

> Thank you.
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