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    • doc.FAQ.WhatPortsDoUsersNeedToOpenOnTheirFirewallsToUseOpenLinkSoftware






    Single-Tier users should not need to open ports to accommodate the Single-Tier driver. However, ports may need to be opened to facilitate connections between the database native client and the database to which it connects. Multi-Tier users need to take the following action, if a firewall surrounds the machine that contains the Multi-Tier server components:

    • Login to the machine that contains the Multi-Tier server components.
    • Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the OpenLink installation.
    • Locate the [Protocol TCP] section. For example: 


      [Protocol TCP] PingWatchdog = No ; Send check-alive packets PingInterval = 600 ; every <PingInterval> seconds ;IPAddress = 127.0.0.1 ; Overrules found interface address PortLow = 5000 PortHigh = 5020


    • Make sure PortHigh is uncommented and set. PortHigh should equal PortLow + the number of concurrent connections granted by the license + a few extra ports.
    • Record the PortLow - PortHigh range.
    • Record the Listen port value. ( OpenLink 1.x and 3.x do not have Listen.)
    • Close oplrqb.ini.
    • Open the Listen and PortLow - PortHigh TCP ports on the firewall.
    • Open UDP port #60001--in addition to TCP PortLow - PortHigh --to accommodate 1.x and 3.x drivers.