Linux?
-Dorg.eclipse.ecf.provider.filetransfer.excludeContributors=org.eclipse.ecf.provider.filetransfer.httpclient -Dhttp.proxyPort=8080 -Dhttp.proxyHost=myproxy -Dhttp.proxyUser=mydomain\myusername -Dhttp.proxyPassword=mypassword -Dhttp.nonProxyHosts=localhost|127.0.0.1