-Dhttp.proxyHost=www-proxy.us.example.com -Dhttp.proxyPort=80 -Dhttp.nonProxyHosts=localhost|*.us.company_name.com|127.0.0.1|10.*.*.*|*.foo.com|etc -Dhttps.proxyHost=www-proxy.us.company_name.com -Dhttps.proxyPort=80"
Where www-proxy.us.example.com
is the host name of your proxy server.