Jason, thanks for the helpful reply.

>Ok, your ISP is sending you 123.45.67.90?  You'll have to publish an ARP for
>that address on the external LAN.  That is, suppose the MAC of eth1 is
>DE:AD:BE:EF:00:00, you'll need to "arp -s 123.45.67.90 DE:AD:BE:EF:00:00 pub".
>That's on your firewall, obviously.

Yes, my ISP is sending me .90. That's why I specifically wrote:

>: Assume that my ISP will route all traffic for the two static external IPs
>: 123.45.67.89 and 123.45.67.90 to me.

But from my original question - if I'm only ever going to have one DMZ 
machine (not a whole network) hanging off the firewall, instead of 
publishing an ARP for the MAC address of the DMZ, could I just set the eth2 
address to the _external_ IP, and choose a dummy address in the same 
123.45.67.xxx network for the server itself? In other words:


    /^^\ (xDSL)  123.45.67.89 ------------------
   /net/<-------------------->|eth1            |
   \__/                       |    firewall    |
                  192.168.0.1 |eth0        eth2| 123.45.67.90
                              ------------------
   ----------------      ___    |            |
   |  good    eth0| <---|hub|----           \|/
   | internal net |      ---            ------------------
   |192.168.0.xxx |       |             |  eth0    DMZ   |
   ----------------      \|/            | ftp/webserver  |
                         etc.           | 123.45.67.254  |
                                        ------------------

Would this eliminate needing to set up static routing, etc?

thanks /David/

PS: To reiterate Leonard's plea: People on the list are getting REALLY 
sloppy about killing quoted material in their replies. Those of us who read 
via digest (rather than individual messages) are severely impacted by this 
laziness. Most digests lately are 35k in size, of which about 5k is 
headers, 25k is useless quoting, and only 5k is real information. Please 
USE THE DELETE KEY. Thanks.



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