IFS Installer Fails with No Error Message

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During a recent IFS install we encountered an install failure and the error message/return code was blank. The setup_log.log file said “Error: IFS -DoInstall failed with a return code of”.  We noticed that the setup_log.log claimed that it had created the new database successfully, but the database was not there. After much troubleshooting, we finally realized that we needed some inbound/outbound firewall rules for our IFS database instance. The interesting thing is that the install wizard made it past the database connection screen, but once we added those firewall rules, we were good to go.