I have been experimenting with an internally hosted maven repository for EAP6 - where I need to set a proxy in order to access that internal server. Eclipse-Preferences-Network Connections allows you to establish a proxy - I certainly could have done it incorrectly. But I also watched an end-user, who required a proxy for internal network server access struggle with JBDS - because JBDS could not find the newly created OpenShift application - it would always timeout.

Screenshot of my settings are attached - they should work on the VPN.