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Some deployments modes have settings that are unique to that mode. The second step in the Deployment Wizard allows you to configure those settings. The Transparent Bridge Mode has no mode-specific settings.
Mode
Mode-specific Settings
Transparent Bridge
None
Transparent Bridge for HA
New Cluster Settings or Existing Cluster Settings
Forward Proxy
Proxy Settings
Reverse Proxy
ICAP
ICAP Settings
Simple Transparency
Simple Transparency Settings
WCCP
WCCP Settings