RE: [FW1] FW-1 One External Interface- NAT to several public addresses

[Luke, Jason (ISS Southfield)]

If I understand you correctly, you just want each internal network to be
hide-NAT translated to a different address.  This is easy.  You need three
more Public IP addresses (easiest if from the same range as your firewall).
Let's say your firewall is 200.200.200.1, then just create rules to hide
192.168.1.0 behind 200.200.200.2, 192.168.2.0 behind 200.200.200.3, etc..
Then you need put the arp entries for these new addresses on the firewall so
that it knows to respond for them.  arp -s 200.200.200.2 <mac address of
ext. interface>


-----Original Message-----
From: Velasquez Venegas Jaime Omar [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 07, 2001 4:57 PM
To: FW1-MailingList (E-mail)
Subject: [FW1] FW-1 One External Interface- NAT to several public
addresses



My trusted network is defined by a few internal networks.FW-1 should do NAT
every internal network to a different external public address:

192.168.1.0 -> Public_Network_1
192.168.2.0 -> Public_Network_2
192.168.3.0 -> Public_Network_3

Since the box running fw-1 has only one external interface , how should i
overcome this problem?


Thanks









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