Performing Advanced Administration › Set Up Application Mapping › Configure Global Settings for Application Mapping

Configure Global Settings for Application Mapping

Review the global settings that affect application mappings. Make any adjustments that are needed to customize application mapping behavior. The global settings that affect application mapping include the following options:

• TCP Rebase Port: Target port for redirected TCP traffic. If an application mapping rule sends TCP traffic to a port that already has native (non-mapped) traffic, the native traffic is redirected to the TCP rebase port.
• ToS Mask: Setting to determine whether all ToS bits are used for ToS values.
• UDP Rebase Port: Target port for redirected UDP traffic. The UDP rebase port receives redirected native UDP traffic in the way the TCP rebase port receives redirected native TCP traffic.
• Preserve ToS Map Proto: Setting to determine whether protocol values are reported in addition to ToS values.

Follow these steps:

1. Open the Application Definitions page:
   1. Select Administration from the NFA console menu.

      The Administration page opens.

   2. Select Application Definitions in the Administration menu.

      The Application Definitions page opens.

2. Click Additional Settings.

   The Application Settings page opens.

3. Review and correct the global settings that affect application mapping:
   • TCP Rebase Port: Target port for redirecting native TCP traffic, which is used if an application mapping rule sends TCP traffic to a port that already receives native (non-mapped) traffic.

     For example, suppose that you create an application mapping rule that has port 655 as the destination port. You set the TCP Rebase Port value to 630. If port 655 is receiving native (non-mapped) traffic, the native traffic is redirected to port 630.

     Note: The rebase port is used to avoid merging mapped traffic with other types of traffic. If application mapping rules are configured with unused destination ports, the rebase port is not used: Reports do not show traffic on the rebase port. If your reports show traffic on the rebase port, you may want to specify a new destination port for the mapped traffic. Examine the rebase port traffic to determine which rules are involved.

   • ToS Mask: Limits the 8-bit ToS values reported for flow. The default value for this setting is 255, which enables all ToS bits.
   • UDP Rebase Port: Redirects native UDP traffic in the same way the TCP Rebase Port setting redirects native TCP traffic.
   • Preserve ToS Map Proto: Setting to determine whether protocol values are reported in addition to ToS values. Y(es) retains the protocols that are used and reports ToS data separately. N(o) shows you the ToS values for traffic, but you do not see which protocols are involved. The default setting is Y.
4. Click Save.

   Your changes are saved. The Application Settings page remains open.