Re: [afnog] Red Hat 8.0 as a router

[Brian Candler <B.Candler at pobox.com>]

On Tue, Aug 12, 2003 at 10:51:07PM -0700, Daniel Obuobi wrote:
> The ASCII diagram on the network is shown below. I
> hope it will look presentable.

Unfortunately it's missing several important things to make it useful:
- if a box has two interfaces, show both interfaces
- show the IP addresses
- show each network segment explicitly (although treat a layer 2 area
  as a single item, e.g. we don't care if you have 5 hubs plugged together,
  it still counts as a single network when talking at the IP layer)

So using guessed numbers, it might look something like

        INTERNET
          /212.53.99.1(upstream router)
         /
        /(wireless segment)
       /212.53.99.38
 LINUX(ROUTER)
      |.1               10.0.0.0/24
   ---+-------------+------------+---------------+----
                    |.2          |.3             |.4
                PROXY(SQUID) PROXY(SQUID)   MASQ PC 
                 /.1            /.1             /.1
                /192.168.0/24  /192.168.1/24   /192.168.2/24
               /              /               /
        PC-PC-PC-PC-PC     PC-PC-PC-PC      PC-PC-PC

So in this example the first squid proxy has 10.0.0.2 on its outside
interface and 192.168.0.1 on its inside interface.

Because you say you are using network 10, which is private address space
like 192.168 (both are in RFC1918), then it seems there are two sets of NAT
going on. So do you have a second NAT box? Or does your upstream ISP do NAT
(yuk)?

Anyway, what was the question again? :-)

Regards,

Brian.
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