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Re: Netinstall via bridge [SOLVED]



On Sun, Feb 04, 2007 at 04:31:52PM -0500, celejar wrote:
> On 1/28/07, Douglas Allan Tutty <dtutty@porchlight.ca> wrote:
> 
> [snip]
> 
> >Hi  Celejar
> >
> >Let me try to draw this out and see if I've got it right:
> >
> >        +--------+                +--------+               +--------+
> >internet | molly  |  192.168.1.0   |  lucy  | 192.168.2.0   | laptop |
> >        |.168.1.1|  255.255.255.0 |.168.2.1| 255.255.255.0 |.168.2.2|
> >        |        |                |.168.1.2|               |        |
> >        +--------+                +--------+               +--------+
> >
> >On lucy, you set it for ip forwarding.  You install the ipmasq package
> >which does the masquarading out of the box.  You can also install the
> >dnsmasq package which does caching dns service out of the box.
> >
> >On the laptop you tell it that your gateway and also your dns
> >server is 192.168.1.1
> >
> >Molly will only see traffic coming from lucy because lucy will masqurade
> >it.
> >
> >Lucy will of course need two ethernet cards unless you're using a serial
> >null-modem and going ppp (been there, done that, works great).
> >
> >I've done this all the time, especially when ethernet switches were
> >expensive and not all my boxs had ethernet cards.  Don't let the NAT on
> >lucy bother you.  The ipmasq package does its job just fine with no
> >tweaking.  If you _want_ it can also serve dhcp but I always set up
> >stuff manually.
> >
> >Put all three boxes into all three box's /etc/hosts file.  Test it out
> >with ping.
> >
> >Enjoy.
> >
> >Doug.
> 
> You win :). I couldn't get a bridge working properly, so I connected
> laptop <-> lucy via a spare switch that I bought specifically for this
> purpose. I first tried a straight cable connection, hoping that NICs
> (a several year old Realtek card on lucy and an integrated Broadcom on
> the laptop) would support Auto-Crossover, but I couldn't get it to
> work; either one or both don't do Auto-Crossover, or I did something
> wrong. I didn't bother buying a crossover cable since I could get a
> new router / wireless AP / switch (with a [straight] CAT5 cable) for
> only $20 after rebate from Newegg (less if you have patience to lurk
> and hunt for the perfect bargain).
> I use shorewall, so to enable NAT I just added /etc/shorewall/masq
> with the single line "ath0 eth0", and modified the zones and  policy
> files appropriately. Voila, seamless net connectivity! You were right.
> 

I'm glad it worked.

Doug.



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