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Re: [ok-mail] Re: [K12OSN] NAT and DHCP

Yeah, I take PayPal!


I stuck an old PCT 10bT card in there for temporary and put it on public 
numbers because our connection in that building is only 56K anyway so that 
won't be a problem.  That gives the private and public number ranges 
inernet access with NAT.  So that one is OK for now. . .  I have one other 
server though and no more PCI cards, 10bT or otherwise, so if I can get 
NAT to get along on one NIC, that'll be ok.  This other server will serve 
about 15-20 clients.


On Mon, 28 Jul 2003, Richard Black wrote:

> Les Mikesell wrote:
> >On Mon, 2003-07-28 at 09:59, Doug Simpson wrote:
> >  
> >
> >>Yeah, but around here that's like pulling teethe out of a chicken. . . 
> >>Probably not going to happen. . .
> >>
> >>    
> >>
> >
> >I think if I had to spend time working around the lack of a $10
> >NIC, I'd be perverse enough to try running user-mode-linux to
> >set up a virtual machine that had two virtual nics where NAT would
> >work as expected, and the dhcp server for the rest of the machines
> >would run there.  I've done something similar under VMware but that
> >costs a lot more than a NIC.
> >
> >You need to look at your network connections to see if a one-nic
> >configuration is even possible though.  You must have something
> >to keep the DHCP services separated. If your branch connects through
> >a router that does not forward DHCP you could get away with serving
> >private addresses back on your LAN connection.  However, if you are
> >already connected to another DHCP server you can't put your own on
> >the same wire unless they are both configured to only answer specific
> >hardware addresses. A second NIC with a local hub/switch avoids this
> >problem.
> >  
> >
> Yes, or even simpler, virtual NIC, but I'm not sure how far your mileage 
> would get you:
> ifconfig eth0:0
> Of course we could alternatively take up a collection... do you take 
> paypal?  ;-)

Doug Simpson
Technology Specialist
DeQueen Public Schools
DeQueen, AR 71832
simpsond leopards k12 ar us
Tux for President!

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