I have installed an EJB on a jboss 4.2.2 server (On a red hat distribution) It is correctly deployed. I have a remote server or client I always have this trace bellow : I start the server with run.sh -b 0.0.0.0, and-Djava.rmi.server.hostname= org.jboss.remoting.CannotConnectException: Can not get connection to server. Problem establishing socket connection for InvokerLocator [socket://127.0.0.1:3873/] | at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:532) | at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122) | at org.jboss.remoting.Client.invoke(Client.java:1634) | at org.jboss.remoting.Client.invoke(Client.java:548) | at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:62) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:67) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:107) | at $Proxy0.login(Unknown Source) | at com.sbe.poolstock.servlet.LoginServlet.login(LoginServlet.java:143) | at com.sbe.poolstock.servlet.LoginServlet.service(LoginServlet.java:74) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) | at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463) | at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) | at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) | at com.nexaweb.server.servlet.forwarder.RequestForwardingServiceImpl.forward(RequestForwardingServiceImpl.java:121) | at com.nexaweb.server.protocol.HandleEventExecutor.executeCommand(HandleEventExecutor.java:72) | at com.nexaweb.server.protocol.ServerProtocolExecutor.executeCommand(ServerProtocolExecutor.java:40) | at com.nexaweb.protocol.ProtocolExecutorManager.executeCommand(ProtocolExecutorManager.java:116) | at com.nexaweb.protocol.ProtocolNamespaceHandler.receiveDispatch(ProtocolNamespaceHandler.java:91) | at com.nexaweb.server.protocol.ServerProtocolNamespaceHandler.receiveDispatch(ServerProtocolNamespaceHandler.java:96) | at com.nexaweb.xml.NamespaceHandler.receiveDispatch(NamespaceHandler.java:109) | at com.nexaweb.xml.NamespaceHandlerManager.dispatch(NamespaceHandlerManager.java:102) | at com.nexaweb.xml.ParserImpl.parseFragment(ParserImpl.java:317) | at com.nexaweb.xml.ParserImpl.parseDomTree(ParserImpl.java:283) | at com.nexaweb.xml.ParserImpl.parseDomTree(ParserImpl.java:222) | at com.nexaweb.xml.DocumentImpl.<init>(DocumentImpl.java:161) | at com.nexaweb.xml.ParserImpl.parseXmlWithProcessing(ParserImpl.java:526) | at com.nexaweb.server.servlet.NexawebServlet.executeProtocol(NexawebServlet.java:374) | at com.nexaweb.server.servlet.NexawebServlet.service(NexawebServlet.java:229) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) | at java.lang.Thread.run(Unknown Source) | Caused by: java.net.ConnectException: Connection refused: connect | at java.net.PlainSocketImpl.socketConnect(Native Method) | at java.net.PlainSocketImpl.doConnect(Unknown Source) | at java.net.PlainSocketImpl.connectToAddress(Unknown Source) | at java.net.PlainSocketImpl.connect(Unknown Source) | at java.net.SocksSocketImpl.connect(Unknown Source) | at java.net.Socket.connect(Unknown Source) | at org.jboss.remoting.transport.socket.SocketClientInvoker.createSocket(SocketClientInvoker.java:187) | at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.getConnection(MicroSocketClientInvoker.java:815) | at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:525) | at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122) | at org.jboss.remoting.Client.invoke(Client.java:1634) | at org.jboss.remoting.Client.invoke(Client.java:548) | at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:62) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:67) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:74) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:107) | at $Proxy0.login(Unknown Source) | at com.sbe.poolstock.servlet.LoginServlet.login(LoginServlet.java:143) | at com.sbe.poolstock.servlet.LoginServlet.service(LoginServlet.java:74) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) | at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463) | at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) | at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) | at com.nexaweb.server.servlet.forwarder.RequestForwardingServiceImpl.forward(RequestForwardingServiceImpl.java:121) | at com.nexaweb.server.protocol.HandleEventExecutor.executeCommand(HandleEventExecutor.java:72) | at com.nexaweb.server.protocol.ServerProtocolExecutor.executeCommand(ServerProtocolExecutor.java:40) | at com.nexaweb.protocol.ProtocolExecutorManager.executeCommand(ProtocolExecutorManager.java:116) | at com.nexaweb.protocol.ProtocolNamespaceHandler.receiveDispatch(ProtocolNamespaceHandler.java:91) | at com.nexaweb.server.protocol.ServerProtocolNamespaceHandler.receiveDispatch(ServerProtocolNamespaceHandler.java:96) | at com.nexaweb.xml.NamespaceHandler.receiveDispatch(NamespaceHandler.java:109) | at com.nexaweb.xml.NamespaceHandlerManager.dispatch(NamespaceHandlerManager.java:102) | at com.nexaweb.xml.ParserImpl.parseFragment(ParserImpl.java:317) | at com.nexaweb.xml.ParserImpl.parseDomTree(ParserImpl.java:283) | at com.nexaweb.xml.ParserImpl.parseDomTree(ParserImpl.java:222) | at com.nexaweb.xml.DocumentImpl.<init>(DocumentImpl.java:161) | at com.nexaweb.xml.ParserImpl.parseXmlWithProcessing(ParserImpl.java:526) | at com.nexaweb.server.servlet.NexawebServlet.executeProtocol(NexawebServlet.java:374) | at com.nexaweb.server.servlet.NexawebServlet.service(NexawebServlet.java:229) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) | at java.lang.Thread.run(Unknown Source) | at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:74) | ... 48 more I found this error in other threads but I have never find a solution.... 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