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Equipment Shopping NAT SmartSwitches

Discussion in 'Networking' started by Codecharmer, Jan 16, 2011.

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  1. Codecharmer

    Codecharmer Thread Starter

    Joined:
    Jan 16, 2011
    Messages:
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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
     
  2. zx10guy

    zx10guy Trusted Advisor Spam Fighter

    Joined:
    Mar 30, 2008
    Messages:
    6,128
    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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