Re: Using iSeries As Router

[Scott Klement <midrange-l@xxxxxxxxxxxxxxxx>]

Perhaps this is a silly question, but...  why do you have NAT turned 
off?  Seems to me that NAT is pretty much required in your scenario, 
unless you have only one computer behind the router (but that doesn't 
sound like the case...)


Shannon ODonnell wrote:
> Hi,
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> Maybe a dumb question.but when it comes to networking, I am pretty ignorant.
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> I recently got a new Wireless-N router (Linksys) to replace an older Belkin
> Wireless-G router.
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> My old network looked like this:
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> -          ISP Modem
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> To -  Belkin Router
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>     
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> iSeries to Belkin Router
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> PC's to Belkin Router
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> By turning NAT off on the Belkin (wouldn't work with NAT enabled), I was
> able to get to my iSeries using both an internal IP address and an external
> IP address (from the outside world).
>
> To achieve that, I defined a *DFTROUTE on my iSeries that pointed to the
> Belkin router and then I created two interfaces, one with an external IP
> address (that was a child of the ISP Modem's static IP address) and the
> other interface was an internal IP address.  
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> Worked great.
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> With my new Wirless-N router, I tried that same setup (only pointing the
> *DFTROUTE to the new router IP address) and now I cannot get to the iSeries
> through an outside IP address.  I can still get to it internally (with a new
> internal IP address interface), but not through the external IP address.
> Turning NAT off on this router makes no difference in this setup.
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> I cannot figure out the right combination of settings on the new modem that
> will allow me to point an external IP address to the iSeries such that I can
> access it outside the network.
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> I also tried doing port forwarding and setting up the iSeries outside the
> DMZ.  Didn't work.
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> So.  my question is. I have two Ethernet cards in my iSeries.  I'm wondering
> if I could set my network up so that the ISP Modem goes directly into my
> iSeries (which would put it completely outside of the local router) and
> then, using the other Ethernet card, pass all local PC traffic in and out
> through the Wireless-N router and then through the iSeries and out to the
> internet that way. 
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> Is it possible to use the iSeries in this manner?  In effect, I'd be turning
> it into a router (sort of).  
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> I don't even know what I'd have to configure on the iSeries to achieve this
> or if it's even possible.
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> Anyone ever tried this?
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> Shannon O'Donnell
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