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Client machine is unable to ping both NICs in a Windows 2008 R2 Enterprise Server

    Question

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    I have a 2008 Server which has two NIC cards. One is 192.168.1.2 and the other is 10.1.10.1. The 192 network is connected to the outside and the 10 network is an internal network. The client computer is on the 10 network (10.1.10.100) and is inable to ping the 192 NIC card. I know I'm missing something super simple to make this work but I can't for the life of me figure it out. Also, on the server I have a DNS error of 407 and 408. I'm not exactly sure how to fix that either. I went though the steps that I found on Microsoft but it didn't help. Please help.
    Tuesday, January 22, 2013 4:02 PM

Answers

  • What is your Default Gateway on your Client machine?

    There are many reasons why DNS errors 407 and 408 occur. According to your post, it seems like you have NAT and DNS configured on same server, and you have DNS binding for both NICs. You should remove DNS binding for your public network by doing following:

    • Start the DNS snap-in in the Microsoft Management Console (MMC), right-click the DNS server, and then click Properties.
    • Click the Interfaces tab, and then in the Listen on section, click to select the Only the following IP addresses check box.
    • Click 192.x.x.x IP address, and then click Remove.
    • Click OK.
    • Right-Click your DNS Server Name in DNS snap-in, Point to All Tasks, Click Restart to Restart DNS services.

    MCP, MCTS, MCSE 2003, MCITP 2008, MCSA 2012
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    Tuesday, January 22, 2013 5:24 PM
  • you have 2 different subnets and you will never be able to ping from 

    10.x.x.x to 192.168.1.x unless and untill you have router 


    http://www.arabitpro.com

    Tuesday, January 22, 2013 5:34 PM
  • You can use RRAS and configure NAT on Windows Server machine, so communication between two subnets can be possible. Windows Server acts as NAT router, and clients can ping both subnets if correct Default Gateway is configured on clients.

    According to DNS errors user reported, error 407 and 408 only caused by if DNS and NAT is installed on same machine.


    MCP, MCTS, MCSE 2003, MCITP 2008, MCSA 2012
    LinkedIn: http://www.linkedin.com/pub/jatin-patel/25/90b/2a/

    This posting is provided 'AS IS' with no warranties or guarantees and confers no rights.
    Please help and appreciate others by using these features: "Propose As Answer", "Vote As Helpful" and "Mark As Answer"


    Tuesday, January 22, 2013 5:40 PM
  • Yes, Ping will be allowed between subnets if NATing is configured correctly.

    reference - first and last screenshot here.


    MCP, MCTS, MCSE 2003, MCITP 2008, MCSA 2012
    LinkedIn: http://www.linkedin.com/pub/jatin-patel/25/90b/2a/

    This posting is provided 'AS IS' with no warranties or guarantees and confers no rights.
    Please help and appreciate others by using these features: "Propose As Answer", "Vote As Helpful" and "Mark As Answer"

    Tuesday, January 22, 2013 6:22 PM
  • Hi PocketSizeAsian,


    Agree with the above suggestions, we need to configure the server act as a router. And RRAS can help us.


    More information:

    How to Use Static Routes with Routing and Remote Access Service

    Routing and Remote Access


    Hope this helps.


    Jeremy Wu
    TechNet Community Support

    Thursday, January 24, 2013 9:03 AM
    Moderator

All replies

  • What is your Default Gateway on your Client machine?

    There are many reasons why DNS errors 407 and 408 occur. According to your post, it seems like you have NAT and DNS configured on same server, and you have DNS binding for both NICs. You should remove DNS binding for your public network by doing following:

    • Start the DNS snap-in in the Microsoft Management Console (MMC), right-click the DNS server, and then click Properties.
    • Click the Interfaces tab, and then in the Listen on section, click to select the Only the following IP addresses check box.
    • Click 192.x.x.x IP address, and then click Remove.
    • Click OK.
    • Right-Click your DNS Server Name in DNS snap-in, Point to All Tasks, Click Restart to Restart DNS services.

    MCP, MCTS, MCSE 2003, MCITP 2008, MCSA 2012
    LinkedIn: http://www.linkedin.com/pub/jatin-patel/25/90b/2a/

    This posting is provided 'AS IS' with no warranties or guarantees and confers no rights.
    Please help and appreciate others by using these features: "Propose As Answer", "Vote As Helpful" and "Mark As Answer"

    Tuesday, January 22, 2013 5:24 PM
  • you have 2 different subnets and you will never be able to ping from 

    10.x.x.x to 192.168.1.x unless and untill you have router 


    http://www.arabitpro.com

    Tuesday, January 22, 2013 5:34 PM
  • do you have 2 nics on the client machine one hooked up for each subnet the server is on?

    if the answer is no then you will not be able to ping them.  They are non-routable addresses on different networks.  The non-pingable nic may as well be on Saturn.

    A router won't help you unless you want to break basic IP standards; these are non-routable addresses.



    Tuesday, January 22, 2013 5:38 PM
  • You can use RRAS and configure NAT on Windows Server machine, so communication between two subnets can be possible. Windows Server acts as NAT router, and clients can ping both subnets if correct Default Gateway is configured on clients.

    According to DNS errors user reported, error 407 and 408 only caused by if DNS and NAT is installed on same machine.


    MCP, MCTS, MCSE 2003, MCITP 2008, MCSA 2012
    LinkedIn: http://www.linkedin.com/pub/jatin-patel/25/90b/2a/

    This posting is provided 'AS IS' with no warranties or guarantees and confers no rights.
    Please help and appreciate others by using these features: "Propose As Answer", "Vote As Helpful" and "Mark As Answer"


    Tuesday, January 22, 2013 5:40 PM
  • yes....NATing exists but will the NAT allow a ping request?
    Tuesday, January 22, 2013 5:48 PM
  • Yes, Ping will be allowed between subnets if NATing is configured correctly.

    reference - first and last screenshot here.


    MCP, MCTS, MCSE 2003, MCITP 2008, MCSA 2012
    LinkedIn: http://www.linkedin.com/pub/jatin-patel/25/90b/2a/

    This posting is provided 'AS IS' with no warranties or guarantees and confers no rights.
    Please help and appreciate others by using these features: "Propose As Answer", "Vote As Helpful" and "Mark As Answer"

    Tuesday, January 22, 2013 6:22 PM
  • Hi PocketSizeAsian,


    Agree with the above suggestions, we need to configure the server act as a router. And RRAS can help us.


    More information:

    How to Use Static Routes with Routing and Remote Access Service

    Routing and Remote Access


    Hope this helps.


    Jeremy Wu
    TechNet Community Support

    Thursday, January 24, 2013 9:03 AM
    Moderator