Communicate between two (same) Applications

Hi there,
I've written a server application in java.
This Server is always running in the background.
For restart/shutdown or similar purpose I want to communicate with this application.
Is ist possible to start the same application with a args-flag that causes the running server to shutdown.
I know it's easy possible by doing this via the socket connection.
Because of security-reasons I want to avoid this. To limit this to the localhost is to insecure.
Any ideas?

Ok, I will explain it in detail.
I don't want to open a new Port for this,
so it is possible to use the existing open port.
The idea to limit control sequences to localhost can made by Socket.getInetAdress() (maybe insecure (fake IP)) for the existing port or via Konstruktor of ServerSocket for a new port
The point is:
I dont't want to grant access to other users on this machine!
And I don't want to limit a port for localhost from the system-enviroment via root-possibilities.
If there is no other possibility, I think I try to use a new Port for this. I just wanted to know if this is the only possibility or are there other easier ways.
Thanx for helping
thosta

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Message was edited by:
nawlej

Communicate between two (same) Applications

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