Equipment Shopping NAT SmartSwitches

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Codecharmer

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Joined
Jan 16, 2011
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Hello,
I'm looking for an inexpensive router/smartswtich with the ability to NAT between two private networks, without using gateway addresses.

Primary Network: 192.168.1.X with 255.255.255.0 mask and an internet gateway 192.168.1.254.

Secondary Networks: 192.168.10.X / 255.255.255.0 private gateway to other equipment.
Secondary Networks: 192.168.20.X / 255.255.255.0 private gateway to other equipment.
Secondary Networks: 192.168.30.X / 255.255.255.0 private gateway to other equipment.

I can't change the gateways in the secondary networks, but I have the need to communicate with specific equipment on the secondary networks from the primary. While keeping isolation between the networks.

So, I'd like to connect the router/smartswitch to each of the networks and program NAT to handle routing. Getting a device smart enough to know about all the networks might be too expensive (thousands of dollars) so I might have to use three devices handling the join of two networks at a time.

I want to assign new IPs on the primary network to NAT into the secondaries as follows:
192.168.1.210 -> NAT to the machine at 192.168.10.21
192.168.1.211 -> NAT to the machine at 192.168.10.45
192.168.1.212 -> NAT to the machine at 192.168.10.73
192.168.1.213 -> NAT to the machine at 192.168.20.2
192.168.1.214 -> NAT to the machine at 192.168.20.11
192.168.1.215 -> NAT to the machine at 192.168.30.5

Any suggestions on new or used (ebay or other) equipment for accomplishing this task with a limited budget?

Thx
 

zx10guy

Trusted Advisor
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Joined
Mar 30, 2008
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6,506
You're not going to find NAT functionality in any smart/web managed switch. Switches in this category are layer 2 only. You'll need a layer 3 switch.
 
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