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An applet, per default security policies, can only connect back to the IP address from which it originated (and, if you are running over a proxy, there is a good chance that this won't work either). So, unless the DB exists on the same machine as the web service, this is a no go.
If you wish to connect to a different address with an applet, a signed jar/applet may do the trick, otherwise, the user on the client machine must alter their security policy. Bad idea for them to do this, and very bad idea for your application (applet) to rely on this being, or having been, done.
Many many thanks to your reply.
I have signed this jar. Its connect on my local network. But when i connect through VPN Router over Internet, then this exception raised. As my application will be connect through VPN router over Internet, so i can't change the policy file manually..Is there any way to do this...
Please help me...
Thank you again
Okay, what's the scenario?
I can only assume you have a laptop, and when you are in the office, you can use this applet, on this laptop, but from home (or some other remote location) and you connect using VPN, then you cannot, right?
Then this this is a VPN issue, ask your network administrators about it.
I have stopped the all firewall in VPN and now my applet is run through VPN but new problem arise that is sometimes its connected to database and sometimes its not. Error massage is same: The network adapter could not establish the connection. I am continuously ping my network.. its ok. No problem in Internet connection.
I have tried a lot in several way but can't find out why this happened..
Please help me.