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WAS4 - Virtual Host Puzzle

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I am having a program which makes a "http socket" connection to AppServer using the HTTP Transport Port like 9080. I modified the virtual host to
have the port entry like:
*:9080 (Asterik colon then port number)
Everything works fine if the virtual host entry is *:9080. But I would like to restrict this socket connection only from certain IP, so I modified the virtual host to:
Now if I execute my program its able to make conneciton but giving following error:
Response: HTTP/1.1 404 Not Found
Server: WebSphere Application Server/4.0
Content-Type: text/html
Content-Length: 140
Connection: close
<H1>Virtual Host or Web Application Not Found</H1>
<H3>The host ibm9 has not been defined</H3>
IBM WebSphere Application Server
I am unable to understand why its not working. As per my understanding if I don't specify the IP address in virtual host then anybody can connect to the clone, whethere this will cause any security threat.
Thanks in advance.
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The chances are that WebSphere is trying to resolve the ip address to a host name. Do a ping on the server and check the response. If it does not resolve WebSphere cannot find the virtual host. Define a host name for the IP address in your host file and use this in the virtual host definition. Make sure there is a similar virtual hos entry in the Apache config file.
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