locked
Firewall desables local network RRS feed

  • Question

  •  

    If the Firewall is enabled, my local network is blocked.  All of the setting for "home and work" are green and on.  Also all firewall settings are green except for "Media Center Extender" and "Remote Assistance".  This problem has happened with some of the latest updates.  Also, "One Care" has changed my local IP address which I had to reset to my local IP address.  My system consists one computer with XP that connects to the internet via a high speed ether net connection to my ISP,  one computer running Win2000, and a HP network printer.    On my local network I have the XP system,  the Windows 2000 system and the HP printer.  The printer works just fine but the connection to the Win2000 computer does not work with the firewall enabled.  If I use ping to ping the XP system from the XP system with firewall enabled, it will fail.   With the firewall disabled, everthing works just fine.
    Monday, March 3, 2008 12:04 AM

Answers

  • You don't mention a router. Is one PC running Internet Connection Sharing?

    OneCare doesn't modify IP addresses. Did you have it configured with a manual IP address? Do you have multiple active network adapters in the PC with OneCare installed?

    Note that ping won't work with OneCare installed unless you allow ICMPv4 in the ports or protocols tab for the advanced Firewall settings.

    -steve

     

    Friday, March 7, 2008 10:09 PM
    Moderator

All replies

  • You don't mention a router. Is one PC running Internet Connection Sharing?

    OneCare doesn't modify IP addresses. Did you have it configured with a manual IP address? Do you have multiple active network adapters in the PC with OneCare installed?

    Note that ping won't work with OneCare installed unless you allow ICMPv4 in the ports or protocols tab for the advanced Firewall settings.

    -steve

     

    Friday, March 7, 2008 10:09 PM
    Moderator
  • I was wrong.  My network was working.  Like most people, I depend on ping to validate my network.  When I could not ping myself, I assumed that my network had failed.  Installing ICMPv4 lets ping work.  Of course, I had no idea what ICMPv4 was and what and what was its function.   For reasons that I can not explane, my manually set IP address was blank and "Obtain IP address Automatically" was set.  So while I was debugging this problem, I used ping to validate the operation of my network. 

     

    Thanks Stephen for the support.

     

    DNester

     

    Saturday, March 8, 2008 3:53 PM
  • You're welcome. I assume that all is well now and that the base problem was the failure if ping.

    -steve

     

    Monday, March 10, 2008 1:56 PM
    Moderator