Initialization Parameters Used for Network Security

Table: Initialization Parameters Used for Network Security lists initialization parameters that you can set to better secure user accounts.

Initialization Parameter	Default Setting	Description
`OS_AUTHENT_PREFIX`	`OPS$`	Specifies a prefix that Oracle Database uses to identify users attempting to connect to the database. Oracle Database concatenates the value of this parameter to the beginning of the user operating system account name and password. When a user attempts a connection request, Oracle Database compares the prefixed username with user names in the database.
`REMOTE_LISTENER`	No default setting	Specifies a network name that resolves to an address or address list of Oracle Net remote listeners (that is, listeners that are not running on the same computer as this instance). The address or address list is specified in the `tnsnames.ora` file or other address repository as configured for your system.
`REMOTE_OS_AUTHENT`	`FALSE`	Specifies whether remote clients will be authenticated with the value of the `OS_AUTHENT_PREFIX` parameter.
`REMOTE_OS_ROLES`	`FALSE`	Specifies whether operating system roles are allowed for remote clients. The default value, `FALSE`, causes Oracle Database to identify and manage roles for remote clients.

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