Simple LAN, no Internet connection, doesn't work


  1. jclement
    Posts : 3
    XP and 7
       New #1

    Simple LAN, no Internet connection, doesn't work


    I'm working on a system using a simple TCP/IP LAN with no internet connection. The current system uses Windows XP with a fixed IP address, no DHCP and running a software connecting to sub-components (UNIX and hardware controllers) through TCP/IP. It is setup to handle small real-time data packets that could be easily handled by a 10 years old Windows system.

    I installed Windows 7 Ultimate and setup a simple LAN connection with a fixed IP address and turned of both public and home firewalls off. I'm loosing real-time data packets like crazy. Either the network configuration is wrong (BTW, trying to setup a simple LAN network is a bigger task than trying to connect on a WiFi connection on Win7!) or Windows 7 is trying to "protect" me against my will.

    Is there some (relatively) easy documentation on how to setup a simple, stupid, closed LAN with no overprotection from Windows 7?

    Thanks!
    JL
      My Computer
    Quote Quote

  3. jclement
    Posts : 3
    XP and 7
    Thread Starter
       New #2

    I understand that most problems posted here have something to do with home use of Windows 7, but is there any tech support here?

    The problem still persists. I'm logged in as the built-in Administrator and connected to a standard network switch with a fixed IP address, no DHCP. Other devices are connected to the same switch and communication is done through TCP sockets. Unfortunately, the Windows 7 machine drops or refuses data packets and sometimes freezes our application. The same app works fine with Win 2000, Win Server 2003/2008, Win XP and Vista. The app is run as Admin. Does anyone has a clue about this horible network performance in Windows 7?

    Thanks!
    JL
      My Computer
    Quote Quote

  4. jclement
    Posts : 3
    XP and 7
    Thread Starter
       New #3

    Thinking further, I'm using port 8000. It doesn't look like it's used by something else. Does Win 7 use that port?
      My Computer
    Quote Quote

 

  Related Discussions
Wifi Connection Doesn't Work
in Network & Sharing

I'm located in Mexico at the moment. Here the internet is pretty unreliable at times. I use izzi also known as cablemas. Many times the internet would go out... modem go out etc happens randomly. Its not only me but others as well that i know who live here in Mexico. My issue now is my...
Hi. My room mates and i recently got an internet connection. Unfortunately, we only have one LAN cable so we need to take turn in using it. It works fine on my netbook but not to them. Windows troubleshoot it and says "Local Area Connection doesn't have a valid IP configuration". What should we do?...
Hi. I formatted both my laptop and desktop computer. When i did with my laptop, everything was great. Wireless still worked. Of course i have my linksys router connected to get the wireless. I then formatted my desktop. Its a dell. When i did this, everything seemed great. However, i...
Hello Two weeks ago I can’t connect to internet in my house because appears “The connection between your access point, router, or cable modem and the Internet is broken” when I use the local connection. I don’t have router, and my cable modem and access point work very well in other computers. ...
Hello everyone. I am having an issue getting my laptop (has Windows 7 Home Premium) to connect to my desktop work computer (has Windows 7 Professional) using RDC. I keep getting the following message: "The Local Security Authority cannot be contacted". I have searched the forum and Google and can't...
Our Sites
Site Links
About Us
Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

 © Designer Media Ltd
All times are GMT -5. The time now is 21:21.
Find Us