# Running the Network Server without a security manager

You may override the Network Server's default installation of a security manager if, for some reason, you need to run your application outside of the Java security protections.

CAUTION:
You incur a severe security risk by opening up the server to all clients without limiting access via user authentication and a security policy.

Use the `-noSecurityManager` option to force the Network Server to come up without a security manager. For example:

    java org.apache.derby.drda.NetworkServerControl start \
    -h localhost -noSecurityManager

Parent topic: Configuring Java security
Related concepts
Using a Java security policy file
Running embedded Derby with a security manager
Related tasks
Running the Network Server with a security manager
Related reference
Basic security policy template
Sample customized Java security policy file