Unable to connect to a remote WebSphere Application Server hosted on a Red Hat Enterprise Linux machine

This topic discuss the steps you must configure on a Red Hat Enterprise Linux 5 to setup the host name for accessing the WebSphere® Application Server from a remote machine.
If you are hosting a WebSphere Application Server on a Red Hat Enterprise Linux machine, complete the following steps for configuring the host name to allow access from remote connections:
  1. In the Red Hat Enterprise Linux machine, open the hosts file available in the /etc directory. Verify the host name of your machine is not specified in the 127.0.0.1 entry. If the host name of your machine is specified in the 127.0.0.1 entry, change the host name to localhost.localdomain. Your 127.0.0.1 entry in your hosts file should look like this:
    # Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1       localhost.localdomain   localhost
  2. Verify the host name of your machine is specified in the DHCP settings:
    1. Open the Network Configuration dialog box. By default in a Red Hat Enterprise Linux operating system, you can find this dialog by selecting System > Administration > Network. The Network Configuration dialog opens.
    2. In the Devices page, highlight your Ethernet entry. In most systems, the device name is eth0.
    3. Select the Edit button from the toolbar. The Ethernet Device dialog opens.
    4. Use the Hostname field under the DHCP Settings to specify the host name of your machine.
      This is a screen capture of the Ethernet Device dialog box.
  3. Choose the appropriate task to activate your changes:
    • Restart the network services
    • Restart the computer
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