java.net.SocketTimeoutException: connect timed out at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:579) at sun.net.NetworkClient.doConnect(NetworkClient.java:175) at sun.net.www.http.HttpClient.openServer(HttpClient.java:432) at sun.net.www.http.HttpClient.openServer(HttpClient.java:527) at sun.net.www.http.HttpClient.(HttpClient.java:211) at sun.net.www.http.HttpClient.New(HttpClient.java:308) at sun.net.www.http.HttpClient.New(HttpClient.java:326) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:998) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:934) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:852) at sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2412) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1559) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468) at hudson.model.UpdateCenter$UpdateCenterConfiguration.testConnection(UpdateCenter.java:1143) at hudson.model.UpdateCenter$UpdateCenterConfiguration.checkUpdateCenter(UpdateCenter.java:953) at hudson.model.UpdateCenter$ConnectionCheckJob.run(UpdateCenter.java:1360) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110) at java.lang.Thread.run(Thread.java:745)