Configuring DSO for firewalls

If an AR System server is configured to run behind a firewall, however, you can set up a DSO server outside the firewall to support that AR System server, as shown in the following figure:

 DSO firewall configuration

For information about configuring a firewall for an AR System server, see Configuring-firewalls-with-AR-System-servers.

To configure DSO for firewalls

Consider the following points in this procedure:

• AR System serverA is the DSO source AR System server behind the firewall.
• AR System serverB is outside the firewall.

1. On server A, open the AR System Administration: Server Information form, then click the DSO tab.
2. Select Placeholder Mode, then click OK.
   This disables the DSO server that was automatically installed with server A. That DSO server can no longer process distributed operations.
   The corresponding entry in the AR System Configuration Generic UI form is DSO-Placeholder-Mode.
3. To make this change take effect, restart server A.
4. On server B, open the AR System Administration: Server Information form, then click the DSO tab.
5. In the Source Server field, enter the name of server A.
   The corresponding entry in the AR System Configuration Generic UI form is DSO-Source-Server.

6. In the Backup Polling Interval field, enter an appropriate number of seconds, then click Apply.
   This instructs the DSO server on Host B to check the distributed pending queue on server A every x seconds. This is necessary because the DSO server on Host B cannot receive real-time signals from workflow on server A.
   The corresponding entry in the AR System Configuration Generic UI form is DSO-Polling-Interval.

   Setting this field does not make the DSO server on Host B a polling server.

7. Click the Connection Settings tab, then click the DSO Server tab on the Connection Settings tab.
8. In the DSO Local Password field, enter the password that the active DSO server outside the firewall uses to communicate with server A. For more information, see Configuring-a-password-for-the-DSO-user.
9. (Optional) In the DSO Local RPC Program Number field, enter a dedicated RPC program that the active DSO server outside the firewall uses to communicate with server A. For more information, see Assigning-an-RPC-program-number-to-DSO.
10. In the left table, enter the name and TCP/IP port of server A, then click OK.
    For more information, see System requirements.
11. To make these changes take effect, restart server B.
    Server A is now the source AR System serverfor the active DSO server that was installed with server B.