One-way traffic on a network

By severedgein
Apr 10, 2012
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  1. Can anyone walk me through trying to fix my networking issue? Is that allowed in this section?

    If so, I've got a computer connected to our network, and it's able to access all the other computers on the network, but trying to access it from the server and I get nothing. Even trying to ping it from the command prompt it times out. However, pinging the server from the computer it kicks back immediately. It's not a firewall issue because I've turned it off and still cannot connect to it from the server. I recently had to remove some scareware from this computer, and that's when the networking issue started.

    Any ideas?
  2. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    *ping*

    Anyone?

    ICMP enabled, DHCP enabled, firewall off. Nothing doing. Workstation sees everything on the network and can access shared folders and ping all other workstations. But the rest of the workstations and the server "see" the troubled workstation, but cannot contact it.
  3. Marnomancer

    Marnomancer TechSpot Booster Posts: 808   +51

    Perhaps a permissions issue? No inbound connections allowed or something like that?
  4. ITLogicSystems

    ITLogicSystems TechSpot Enthusiast Posts: 106

    Ok, you said "scareware" so that makes me think it could be a bug of some sort. Humor me & boot the workstation in question to safe mode w/ networking. now make sure it has an ip address. now ping the server ip from the workstation in question. now ping the workstation in question from the server. does it work?!? if so, great! you know it's something goofy in normal mode with windows. if not, then we may have a problem... Post back!
  5. wrt54gs7

    wrt54gs7 TechSpot Enthusiast Posts: 131

    Can you connect to this problematic computer from other computers without any problems (ping?)?
  6. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    Sorry for the late reply guys, in safe mode the problem computer does have an IP, but there is still no response when pinging the problem computer from the server or any other computer on the network, however the problem computer can ping all of them.

    Also, when using the problem computer to access any shared files/folders/databases on the network, the response is generally agonizingly slow (4-5secs per change to the database).
  7. jdillman1502

    jdillman1502 TechSpot Enthusiast Posts: 232

    Just a couple thoughts...

    -Have you tried updating the network driver?
    -Go into the device manager, go to view and select show hidden devices. Are there any items that have a red X or yellow !, be sure to check under non-plug and play drivers.
  8. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    I've updated as well as completely uninstalled and reinstalled the network card drivers.
  9. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    suggest we get the tcp settings;
    get a command prompt and enter
    ipconfig /all >myTCP.txt

    then come back here and paste the contents of the myTCP.txt file.

    How did those settings get set {DHCP or Manual editing}?
  10. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    I'm assuming DHCP because before the malware issue we just plugged in created a user and had zero problems.

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : WS301
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Broadcast
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : NVIDIA nForce 10/100 Mbps Ethernet #2
    Physical Address. . . . . . . . . : 00-21-97-62-8D-0B
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::d99:6b49:5e68:ee68%11(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.1.4(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Tuesday, June 12, 2012 9:32:32 AM
    Lease Expires . . . . . . . . . . : Tuesday, June 12, 2012 4:02:32 PM
    Default Gateway . . . . . . . . . : 192.168.1.254
    DHCP Server . . . . . . . . . . . : 192.168.1.254
    DNS Servers . . . . . . . . . . . : 192.168.1.254
    Primary WINS Server . . . . . . . : 192.168.1.1
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter Local Area Connection* 6:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 02-00-54-55-4E-01
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : fe80::c3c:1e9b:3f57:fefb%10(Preferred)
    Default Gateway . . . . . . . . . :
    DHCPv6 IAID . . . . . . . . . . . : 184680532
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-10-F5-FE-85-00-21-97-62-8D-0B
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Tunnel adapter Local Area Connection* 7:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : isatap.{B5E4605B-1CD7-4915-9174-53454E3FB697}
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
  11. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    OK, there are two steps to the resolution:

    a) change the node type from broadcast to hybrid
    [z] To set the NodeType:
    using an admin login, run->regedit

    find this key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters\]​
    add as necessary:​
    DhcpNodeType DWORD = 1​
    NodeType DWORD = 8​

    b) disable IPv6

    save and reboot

    When the system has rebooted, delete the existing network connection {Home, Public, Work}
    and recreate it to set the firewall correctly.

    The next step we might need is the display of the routing table, but let's see how far this takes you.
     
  12. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    did the first two things, how do I delete the network connection?
  13. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    control panel -> Networking & Sharing Center
    On the line --View your active networks--- click Connect or Disconnect
  14. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    sorry, I probably look like an *****, this is my view.

    view.jpg

    Under manage connections it brings up this, but right clicking doesn't give me disconnect as an option, just "disable", is that what I'm doing?
    view2.jpg
  15. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    ok, I'm on Win/7 and the display is different.

    In the first view <manage network connections>; click and see if you can delete it.

    then come back to it and <setup a network connection or network>
  16. severedgein

    severedgein Newcomer, in training Topic Starter Posts: 62

    still not available, tried disabling it to see if it would un-grey "delete"

    view3.jpg
  17. jdillman1502

    jdillman1502 TechSpot Enthusiast Posts: 232

    You would have to uninstall, then re-install the adapter using the Device Manager.
  18. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

     
  19. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    bump; what is your current status????


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