Server behind a router problem getting messages through

I have two simple programs I got from this forum which I am testing out:
client.exe and server.exe.

My client is behind a router. Server is not. When Client connects to the server
and sends messages (simple text string) The servers sees them OK. But when it
replies with an "Ok! got!" acknowledgement message it never gets to the client.

When both are not behind a router everything works OK.

My aim is to send messages when I am traveling and in a hotel. I probably will be
behind a router then. How would I solve this problem?
.

Relevant Pages

  • Re: IP-Adressen und Netzwerkfreigabe
    ... der andere mit einem Router. ... gestartet, keine Chance, ich komme nicht mehr auf den Server. ... Client und Server neu gestartet? ... Hardwaredefekt (Netzwerkkarte, Kabel, Port des Routers / Kabelmodems) ...
    (microsoft.public.de.german.windows.server.setup)
  • RE: VPN woes
    ... I was able connect to a VPN from the external side of the server of the ... the GRE packets were able to be received by the server from a client ... I can only assume that the router is the problem. ... I have spoken to Linksys and they say that the router should pass the GRE ...
    (microsoft.public.windows.server.sbs)
  • Re: Urgent! New router and big disaster
    ... just File and Printer Sharing and the Microsoft Client ... running the internet connection wizard, ... If neother SBS server nor client workstation had ... I wonder if I may have missed a firewall setting on the router as well. ...
    (microsoft.public.windows.server.sbs)
  • RE: VPNs in SBS2003 using ISA.
    ... Please temporarily place a client directly connected to the external NIC ... Server to a simple hub and connect the client to the same hub. ... we can make sure the issue is caused by the router. ... Microsoft CSS Online Newsgroup Support ...
    (microsoft.public.windows.server.sbs)
  • Re: Urgent! New router and big disaster
    ... it's quite possible you misconnected the nics when you put the server ... just File and Printer Sharing and the Microsoft Client ... running the internet connection wizard, ... the UPNP on the router itself. ...
    (microsoft.public.windows.server.sbs)
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