setup external client within location

I have an internal ip address that is NAT to an external ip address. I want to be able to test the ip of the external when I am inside the building.
stevek65Asked:
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Rob WilliamsConnect With a Mentor Commented:
You would need a second route to the "outside world" such as another DSL connection.
You could set up a remote machine, connect to that with remote desktop (or VNC, LogMeIn, etc) and from that connect back to your internal machine, as the connection would be made from outside the network.
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2PiFLCommented:

If you want to see what address you are using while on the net, go here:
http://speedtest.tds.net/

It will show you what address you are using.
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Rob WilliamsCommented:
You can also use
  http://www.whatismyip.com
or  
http://www.canyouseeme.org
The latter will also allow you to test if ports for various services you have enabled are open.

You can also use a web based ping tool to ping your IP if ICMP (ping) requests are set to be allowed by your firewall.
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stevek65Author Commented:
I have to setup a client computer that when inside the internal network I can type the external ip and get to the internal. I have one internal ip that is configured with NAT to an external ip. When I am inside the network and type in the external ip I get an error, different subnet. I have to go off site outside the network to test the external ip. I would like to do this from inside the location. I need to set up a computer that has a the same subnet as the external ip coming in.
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Rob WilliamsCommented:
Are you saying you want to go and back in through the same router? If so, "hair-pinning" is not possible with most routers.
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stevek65Author Commented:
That sounds right.
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Rob WilliamsCommented:
Thanks stevek65. Good luck with it.
Cheers !
--Rob
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