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Installation and Start
Step 1 EFCN requires a Java version 1.5.

You can download the latest version or update it directly from SUN

Java 1.5 Runtime from SUN.

Step 2 If you want to test the EFCN Flightsimulator, which is under development, you additionally will have to install the

Java 3D extension.

Step 3 Start the lobby directly from here:

EF Combat Net WebStart

Note: Although EFCN exclusively uses port 80, it will NOT connect through some firewalls.
"Correctly" working firewalls, NAT routers and software firewalls are no problem.