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Thread: Open DNS

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    Silver Lounger t8ntlikly's Avatar
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    I was reading about OpenDNS this morning and thought I would bring the subject up in here to ask:
    Is there really any advantage for a small home network?, and what would some of the pitfalls be?

    Thanks
    Thanks John
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    OpenDNS is generally very fast often faster than a local ISP DNS server. They provide some additional services if you sign up for an account. See their site Use OpenDNS for more information. Often they update their DNS records faster than local ISPs. On the down side, I've read that some ISPs don't like (and may block) OpenDNS because of lost revenue opportunities.

    Joe
    Joe

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    Super Moderator RetiredGeek's Avatar
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    I"ve been using it for years and love it. I just loaded the IPs into my router and no more worries.
    BTW: I think it also filters out some of the less desirable sites on the web.
    May the Forces of good computing be with you!

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    Gold Lounger Roderunner's Avatar
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    Quote Originally Posted by t8ntlikly View Post
    I was reading about OpenDNS this morning and thought I would bring the subject up in here to ask:
    Is there really any advantage for a small home network?, and what would some of the pitfalls be?

    Thanks
    Reading & using this tool from Gibsons Research Corporation will assist.
    O wad some Power the giftie gie us, to see oursels as ithers see us!

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    Star Lounger
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    Never have had OpenDNS work properly at all! It's just a big headache I got rid of some time ago. I am back on the Cox west DNS servers and my browser runs like lightning now. Let your operating system decide this dynamically and leave well enough alone. Besides if Cox DNS servers don't know the answer to a request they consult with other DNS servers that do. OpenDNS was flaky and unreliable for me so my suggestion is don't change!

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    If you don't like OpenDNS or have a bad experience with it, you could also try Google Public DNS as long as you don't mind Google mining more information about you.

    Joe
    Joe

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    Gold Lounger Roderunner's Avatar
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    To use OpenDNS correctly, you must install:- http://www.opendns.com/support/

    [attachment=90882:dns.JPG]
    O wad some Power the giftie gie us, to see oursels as ithers see us!

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    Super Moderator RetiredGeek's Avatar
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    RR,

    Well not exactly!

    From the OpenDNS Client Documentation

    Why do I care?

    You may use OpenDNS as is without ever reading this page. This information is for those who want to change some of the OpenDNS default settings or view statistics about your DNS usage. For instance, using web content filtering requires a network, which requires an IP address. Knowing more about dynamic IP addresses is useful, especially for home users.
    May the Forces of good computing be with you!

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    Gold Lounger Roderunner's Avatar
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    Quote Originally Posted by RetiredGeek View Post
    RR,

    Well not exactly!

    From the OpenDNS Client Documentation
    Forgot to say it was the updater I was indicating as it does not work correctly without it. Do you see:-

    [attachment=90884:rg.JPG]

    When you open This Link
    O wad some Power the giftie gie us, to see oursels as ithers see us!

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    Roderunner's suggestion regarding running the GRC DNS benchmark is very good.

    I ran the test and in my case, OpenDNS turned out to be the 8th fastest DNS server, my ISP's DNS was indeed the fastest.

    OpenDNS has other advantages, such as filtering out phishing sites, giving you the ability to fine tune what types of sites should be blocked, being able to use shortcuts (I just type mail to get to my online yahoo mailbox) etc. etc. Just try it out, it takes less than 1 minute to setup so there is not downside and potentially a lot to gain, specially if it turns out to be faster than your ISP.

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    New Lounger
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    What other ways have you tried to filter your internet traffic? Any other services or appliances have you tried. What are your thoughts.

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    Gold Lounger Roderunner's Avatar
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    Hi Dan, I use the hosts file from http://www.mvps.org/winhelp2002/hosts.htm installed as instructed in the 'read me ' txt file.

    I also use this reg edit method.
    -
    # Flush the existing DNS cache
    # Start > Run (type) regedit
    # Navigate to the following location:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Dnscache\Parameters

    # Click Edit > New > DWORD Value (type) MaxCacheTtl

    # Click Edit > New > DWORD Value (type) MaxNegativeCacheTtl

    # Next right-click on the MaxCacheTtl entry (right pane) and select: Modify and change the value to 1

    # The MaxNegativeCacheTtl entry should already have a value of 0 (leave it that way - see screenshot)

    # Close Regedit and reboot ..
    O wad some Power the giftie gie us, to see oursels as ithers see us!

  13. #13
    5 Star Lounger
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    What are you looking for in a filter? There are many options out there but they are aimed at different subsets of users. (for instance a business filter will likely cut out video sharing sites such as youtube and music sites as in the corp environment the are a waste of time and bandwidth. Depending on the business they may also filter out social networking to limit privacy exposures.) A filter for home users may be religious based and cut out "subversive" websites such as porn, drugs and alternative lifestyles.

    Filters for the US government may spend all their resources trying to filter out every incident of WikiLeaks information... ...


    In corporate networks I have used Untangle open source. I have also used Dansguardian running on existing Linux servers. I have home customers that use cleaninternet and TotalNetguard (both very conservative filters). I have also used just OpenDNS in some corp environments, however, there is no actual content filtering with OpenDNS (only url blocking) so it is not a very robust filtering solution.

    I do think the phish site blocking and the botnet activity reporting that OpenDNS has make it worth looking at even if you do not use any of the other features.

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