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Testing the accessibility of an application from outside U.A.E.

John Garmany EXPERT RESPONSE FROM: John Garmany

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QUESTION POSED ON: 11 October 2005
My requirement is to test the accessibility of the application hosted on the application server from outside U.A.E. Current scenario: I have a private network and my application server has the static IP 150.140.130.41. I have an ADSL line from the ISP, through which I put the application server on the Internet. A dynamic IP is allocated each time I put the server on the Internet. The dynamic IP provided by the ISP is not a published IP.

I have tested the accessibility from outside U.A.E. and am able to ping the server; however, on trying to access the application logon Web page, I get the following error:

(tcp_error)Network Error
A communication error occurred: "Operation timed out"  
The Web Server may be down, too busy, or experiencing other problems 
preventing it from responding to requests. You may wish to try again 
at a later time.
 
For assistance, contact your network support team.  
Can you guide me as to what is to be done for me to conduct the testing? Thanks.

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EXPERT RESPONSE
I think your issue is the static IP/dynamic IP. Get a little Linksys router and place it between the server and the ADSL modem. The router will handle the dynamic IP. Use DynDNS.org (or another such service) so that as the IP changes, it updates and you can access the application with the same domain name. Pass the ports needed through the router firewall to access the application behind the built-in firewall. Hope this helps.


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