[Php-java-bridge-users] Securing PHP/Java Bridge

Hello all,

I'm in the process of deploying an application which uses PHP/Java Bridge,
and I'm having some difficulty figuring out how to secure the bridge
against unauthorized usage. I've configured Tomcat to block access to the
servelet except from localhost, but unless I'm mistaken, this still allows
everybody on my shared hosting server to run arbitrary Java code in my
container (reading or writing any of my files, etc.). This is certainly not
ideal.

I have followed the instructions to run P/JB with Tomcat's security manager
(http://php-java-bridge.sourceforge.net/pjb/FAQ.html#tomcat-security), but
this appears to simply bypass the security manager altogether, making it
something of a non-solution.

I would like to do one or ideally both of the following:

1. Run PHP/JavaBridge with a security manager so that I can prevent it from
accessing files or directories not specifically required by my application.
2. Require authentication (e.g. basic HTTP authentication) when connecting
to the PHP/Java Bridge servelet (presumably I could set this up in Tomcat,
but I don't see any way to perform the authentication on the client end
from my PHP application).

Any pointers would be appreciated.

Thank you!
-Jon