If you cannot connect to a site using the ACC try the following.

1. use the host name instead of the IP address
2. check that you are using the correct RMI port
3. telnet to the site using the RMI port and see if you can connect
4. check the ACC output window to see if there were any exceptions. if there was an UnknownHostException then try adding the host to your hosts file to fix the problem

Note: The host name you use should be the same as the java.rmi.server.hostname Java argument that is set in the server’s postEnvironment.sh.
JAVA_ARGS="${JAVA_ARGS} -Djava.rmi.server.hostname=kimcityqa"