Cloud9 でAWS DynamoDB Local起動しようとすると Permission Denied

Cloud9 で、DynamoDB Local を起動しようとしたら、ポートをバインドするときにエラーになってしまいました。

$ java -Djava.library.path=. -jar DynamoDBLocal.jar 
2014-02-05 03:33:39.980:INFO:oejs.Server:jetty-8.1.12.v20130726
2014-02-05 03:33:40.383:WARN:oejuc.AbstractLifeCycle:FAILED SelectChannelConnector@0.0.0.0:9000: java.net.SocketException: Permission denied
java.net.SocketException: Permission denied
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:444)
        at sun.nio.ch.Net.bind(Net.java:436)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:187)
        at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:316)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:265)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.server.Server.doStart(Server.java:293)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at com.amazonaws.services.dynamodbv2.local.server.DynamoDBProxyServer.start(DynamoDBProxyServer.java:57)
        at com.amazonaws.services.dynamodbv2.local.serverRunner.ServerRunner.main(ServerRunner.java:154)
2014-02-05 03:33:40.384:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.server.Server@99b59c: java.net.SocketException: Permission denied
java.net.SocketException: Permission denied
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:444)
        at sun.nio.ch.Net.bind(Net.java:436)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:187)
        at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:316)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:265)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.server.Server.doStart(Server.java:293)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at com.amazonaws.services.dynamodbv2.local.server.DynamoDBProxyServer.start(DynamoDBProxyServer.java:57)
        at com.amazonaws.services.dynamodbv2.local.serverRunner.ServerRunner.main(ServerRunner.java:154)
Exception in thread "main" java.net.SocketException: Permission denied
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:444)
        at sun.nio.ch.Net.bind(Net.java:436)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:187)
        at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:316)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:265)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at org.eclipse.jetty.server.Server.doStart(Server.java:293)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
        at com.amazonaws.services.dynamodbv2.local.server.DynamoDBProxyServer.start(DynamoDBProxyServer.java:57)
        at com.amazonaws.services.dynamodbv2.local.serverRunner.ServerRunner.main(ServerRunner.java:154)

ソケットをListenするのは、特に制約事項としてなかった気もするのですが、ダメなんでしょうか。。。 しかたないので、実際のDynaomDBにつなげて開発しようかな。