Networking Issue Over My Head

March 12, 2009 at 07:45:30
Specs: Windows XP Pro
I need to set up a remote connection to 2 Fujitsu Servers but I'm having a hard time wrapping my head around this one.

The 2 servers are not on the Corp. Network, which I have access to from home. We don't want to put them on the network.

Can I put a 3rd computer in, that's on the corp. network, then set up a secondary netwrok between it and the 2 Fujitsus and access them that way? The 2 Fujitsus are networked to a PLC, each one a different PLC and all 3 computers have a 2nd NIC Card. Any ideas about how I should go about doing this?

Thanks,
Eric


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#1
March 12, 2009 at 08:17:44
Can I put a 3rd computer in, that's on the corp. network, then set up a secondary netwrok between it and the 2 Fujitsus and access them that way?

You could just plug them into a switch and if they're configured with IP's in the same subnet, they could communicate (ie: they would be on the same network). A small 8 port switch that's not plugged into the rest of your network would do the trick. Or, if you have managed switches capable of VLAN tagging, you could use VLAN's to segregate them and still plug them into the same switch as everything else.

If you put them on a subnet that is different from the rest of your network, then there would be no communication between networks isolating them from your main work network.

To connect to that network in this scenario you would need a router to route between the subnets. You could limit access to the two computers by only allowing certain computers to communicate. This would entail setting up a rule in the router that says, "Only IP xxx.xxx.xxx.xxx can communicate" or "Only MAC address xx:xx:xx:xx:xx" can commnicate.

You could even set yourself up with remote connectivity too. You would have to first connect remotely to one of the 'allowed' computers and then connect internally from it to the other network.


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#2
March 12, 2009 at 09:34:47
You could just plug them into a switch and if they're configured with IP's in the same subnet, they could communicate (ie: they would be on the same network). A small 8 port switch that's not plugged into the rest of your network would do the trick. Or, if you have managed switches capable of VLAN tagging, you could use VLAN's to segregate them and still plug them into the same switch as everything else.

I have a 5 port workgroup switch. I'll look into this, hate to ask for you to spell it out for me so I'll try to figure it out and post back. At least that way I can learn a bit more.

Thanks so much,


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#3
March 12, 2009 at 14:03:34
I can get them to communicate now but it's cutting off my connection to the PLC.

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#4
March 12, 2009 at 14:12:46
Ok, originally I had all 4 of the IP addresses set to 192.6.5.###. Is that why only 1 or the other would work? I changed the IPs for the nic cards that go to the switch to 220.6.5.### and they seem to both be working now.

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