I have a process within a network that wants to talk to a service on another network. So I have two computers:

Client                            Server
172.X.X.X  reroute-> 172.X.X.X to 10.0.1.X

With this setup, I can call the Server with the 172.X.X.X ip address and it maps to the 10.0.1.X address and talks fine. However, when I try to use .NET Remoting and communicate, I get an exception:

System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 10.0.1.240:8196

Server stack trace: 
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at System.Runtime.Remoting.Channels.RemoteConnection.CreateNewSocket(EndPoint ipEndPoint)
   at System.Runtime.Remoting.Channels.RemoteConnection.CreateNewSocket()
   at System.Runtime.Remoting.Channels.RemoteConnection.GetSocket()
   at System.Runtime.Remoting.Channels.SocketCache.GetSocket(String machinePortAndSid, Boolean openNew)
   at System.Runtime.Remoting.Channels.Tcp.TcpClientTransportSink.SendRequestWithRetry(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream)
   at System.Runtime.Remoting.Channels.Tcp.TcpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)
   at System.Runtime.Remoting.Channels.BinaryClientFormatterSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Aloha.Automation.IBackOfHouseFileServer.get_SecurityKey()
   at Aloha.Automation.Presentation.ViewModel.TerminalViewModel.RefreshSecurityKeyFromTerminal() in c:BuildAgentwork78a60abb233492e7SourceAloha.Automation.PresentationViewModelTerminalViewModel.cs:line 167
   at Aloha.Automation.Presentation.ViewModel.TerminalViewModel.Refresh() in c:BuildAgentwork78a60abb233492e7SourceAloha.Automation.PresentationViewModelTerminalViewModel.cs:line 225
   at Aloha.Automation.Presentation.ViewModel.TerminalViewModel.LabConnectorViewModelOnPropertyChanged(Object sender, PropertyChangedEventArgs args) in c:BuildAgentwork78a60abb233492e7SourceAloha.Automation.PresentationViewModelTerminalViewModel.cs:line 154
   at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
   at Caliburn.Core.PropertyChangedBase.RaisePropertyChangedEventImmediately(String propertyName) in c:Codecaliburnranchesv1.1srcCaliburn.CorePropertyChangedBase.cs:line 49
   at Aloha.Automation.Presentation.ViewModel.ExtendedPresenter.<>c__DisplayClass1.<NotifyOfPropertyChange>b__0() in c:BuildAgentwork78a60abb233492e7SourceAloha.Automation.PresentationViewModelDetailsViewModel.cs:line 42
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Delegate.DynamicInvokeImpl(Object[] args)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)]]>

How should I handle this situation? Do I need to switch remoting technologies or roll my own?