Set the "Frontend Host" attribute appropriately for each server. (1) name of server (1) via the Administration Console, Domain > Environment > Servers > Server Name > Protocols > HTTP > Frontend Host field p30 Table 3-4, "Securing Applications" Oracle Fusion Middleware: Securing a Production Environment for Oracle WebLogic Server, 11g Release 1 (10.3.1) Oracle 2009-05-01 10.3.1 Prose(pdf)