Open DNS on 1 computer

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gouldben

I recently changed from having Open DNS on my router, to instead just enabling it one 1 PC in my house.

However, it seems that the router or cable modem is overriding the PC setting and using the ISP DNS instead of Open DNS.

 

Any thoughts on how to debug and fix this?

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  • Avatar
    rotblitz

    Post the complete plain text output of the following commands here:

    nslookup -tyoe=txt debug.opendns.com.

    ipconfig /all

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  • Avatar
    gouldben
    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation.  All rights reserved.
    C:\Users\Ben & Rachel>nslookup -type=txt -class=chaos hostname.bind.
    Server:  resolver1.opendns.com
    Address:  208.67.222.222
    hostname.bind   text =
            "bdns3.bezeqint.net"
    C:\Users\Ben & Rachel>nslookup -tyoe=txt debug.opendns.com
    Server:  resolver1.opendns.com
    Address:  208.67.222.222
    *** resolver1.opendns.com can't find debug.opendns.com: Non-existent domain
    C:\Users\Ben & Rachel>ipconfig /all
    Windows IP Configuration
       Host Name . . . . . . . . . . . . : Home
       Primary Dns Suffix  . . . . . . . :
       Node Type . . . . . . . . . . . . : Hybrid
       IP Routing Enabled. . . . . . . . : No
       WINS Proxy Enabled. . . . . . . . : No
    Wireless LAN adapter Wireless Network Connection 2:
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
       Physical Address. . . . . . . . . : 06-11-95-F9-55-75
       DHCP Enabled. . . . . . . . . . . : Yes
       Autoconfiguration Enabled . . . . : Yes
    Wireless LAN adapter Wireless Network Connection:
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : D-Link AirPlus G DWL-G510 Wireless PCI Adapter(rev.B)
       Physical Address. . . . . . . . . : 00-11-95-F9-55-75
       DHCP Enabled. . . . . . . . . . . : Yes
       Autoconfiguration Enabled . . . . : Yes
       IPv4 Address. . . . . . . . . . . : 192.168.15.109(Preferred)
       Subnet Mask . . . . . . . . . . . : 255.255.255.0
       Lease Obtained. . . . . . . . . . : Tuesday, December 31, 2013 7:36:45 PM
       Lease Expires . . . . . . . . . . : Wednesday, January 01, 2014 2:13:25 AM
       Default Gateway . . . . . . . . . : 192.168.15.1
       DHCP Server . . . . . . . . . . . : 192.168.15.1
       DNS Servers . . . . . . . . . . . : 208.67.222.222
                                           208.67.220.220
       NetBIOS over Tcpip. . . . . . . . : Enabled
    Ethernet adapter Local Area Connection:
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Intel(R) 82567LM-2 Gigabit Network Connection
       Physical Address. . . . . . . . . : 00-1C-C0-95-5B-D3
       DHCP Enabled. . . . . . . . . . . : Yes
       Autoconfiguration Enabled . . . . : Yes
       Link-local IPv6 Address . . . . . : fe80::d425:6d4b:e917:64a0%10(Preferred)
       IPv4 Address. . . . . . . . . . . : 192.168.15.110(Preferred)
       Subnet Mask . . . . . . . . . . . : 255.255.255.0
       Lease Obtained. . . . . . . . . . : Tuesday, December 31, 2013 8:13:23 PM
       Lease Expires . . . . . . . . . . : Wednesday, January 01, 2014 2:13:23 AM
       Default Gateway . . . . . . . . . : 192.168.15.1
       DHCP Server . . . . . . . . . . . : 192.168.15.1
       DHCPv6 IAID . . . . . . . . . . . : 234888384
       DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-15-41-3E-F6-00-1C-C0-95-5B-D3
       DNS Servers . . . . . . . . . . . : 208.67.220.220
                                           208.67.222.222
       NetBIOS over Tcpip. . . . . . . . : Enabled
    Tunnel adapter Teredo Tunneling Pseudo-Interface:
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
       Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
       IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:3ca9:582:3f57:f091(Preferred)
       Link-local IPv6 Address . . . . . : fe80::3ca9:582:3f57:f091%14(Preferred)
       Default Gateway . . . . . . . . . : ::
       NetBIOS over Tcpip. . . . . . . . : Disabled
    Tunnel adapter Reusable ISATAP Interface {23F6C6F1-E941-4355-9A11-39BB59BB7156}:
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Microsoft ISATAP Adapter #10
       Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter isatap.{2B8EB561-879E-40D6-957F-DA7429652371}:
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Microsoft ISATAP Adapter #11
       Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter isatap.{BC580F2F-BA7D-4C98-8371-26AB2D6DDDA1}:
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Microsoft ISATAP Adapter #12
       Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter isatap.{2676038E-5E5B-424B-A825-1A6639D754F1}:
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Microsoft ISATAP Adapter #13
       Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
    C:\Users\Ben & Rachel>
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  • Avatar
    rotblitz

    All clear.  It seems your ISP is redirecting your DNS queries to their DNS service, so simply configuring 3rd party resolver addresses (e.g. OpenDNS) won't take any effect.

    Whatever, you still may try out the dnscrypt-proxy which may well be able to circumvent this ISP restriction:
    http://dnscrypt.org/

    Good luck!  (And a Happy New Year!)

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  • Avatar
    gouldben
    When I had hard coded OpenDNS into the cable modem/router, it worked. Does that match the above theory and possible solution
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  • Avatar
    rotblitz

    No, it doesn't.  As I said, if your ISP is redirecting your DNS queries to their DNS service, configuring 3rd party resolver addresses (e.g. OpenDNS) won't take any effect, no matter where you configure them.

    Why do you think it worked.  How did you prove it?

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  • Avatar
    gouldben

    I think it is my Cable Modem/Router from the ISP doing the redirection.  Because when i hard code the OpenDNS servers into the router, then it works

    Blocks sites it is supposed to - OpenDNS.com/Welcome works, etc ...

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  • Avatar
    rotblitz

    I see.  Then it is apparently your ISP device doing the redirection.  Still, the dnscrypt-proxy is most likely able to circumvent this redirection, because it works by default over port 443 (instead of default DNS port 53) and with encryption, so that the ISP device may not be able to identify the DNS traffic as such.

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  • Avatar
    davis287

    Hello Open DNS  ,,  I do NOT know ANYTHING !! about how to setup my Netgear Modem for Open DNS  and also I do NOT know HOW to setup my PC to use Open DNS  ,,    is there any VIDEOS to show  Step by Step  of HOW to  use Open DNS ???

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  • Avatar
    rotblitz

    Instructions and videos:  https://store.opendns.com/start/

    If you configured OpenDNS on the router, you shouldn't need to do something on the computers.

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