Support

K-12 Forums

Talk with other K-12 network administrators in your state.

Or see all states.

Categories

Vanilla 1.1.4 is a product of Lussumo. More Information: Documentation, Community Support.

This discussion has been inactive for longer than 30 days, and is thus closed.

DNS-O-Matic / dynamic IPs: How to set the ip-check interval to 30 seconds in OpenDNS updater?

Bottom of Page

1 to 11 of 11

  1.  
    • CommentAuthorturtles
    • CommentTimeDec 26th 2008
     permalink
    Hi,

    Is there a way to set the ip-check interval of OpenDNS updater to 30 seconds or so?

    turtles
    • CommentAuthorbillso
    • CommentTimeDec 26th 2008
     permalink
    Why? That's a really high refresh rate. Most dynamic DNS services won't let you ping that often.
    • CommentAuthorturtles
    • CommentTimeDec 26th 2008
     permalink
    Most dynamic DNS services don't offer comprehensive websites blocking like openDNS...

    If one of the kids disconnects the PPPoE connection (PC who dials up on ADSL modem), he can see the porn sites for about five minutes. I'd like the OpenDNS updater to immediately see when the connection is lost and reconnected, to immediately update my new ip on OpenDNS server.

    Would it be possible to add a function in OpenDNS updater which automatically detects when the connection is lost and reconnected? Or, if it's not possible, how can we set the update interval to the value we want (like 30 seconds for example)?
    • CommentAuthorRed Prince
    • CommentTimeDec 27th 2008
     permalink
    Are you saying the updater is pinging OpenDNS regularly? Why? Isn't the Internet congested enough?

    Just about every DSL "modem" out there has its own HTTP server accessible from within the network. And one of its pages displays the public IP address.

    Checking that page can be done frequently and it never goes outside the local area network.

    If the DynDNS updater can be configured to check the public IP address that way, why not the OpenDNS updater?

    Now, I could understand pinging during a dial-up connection, but doing it with a DSL or cable connection is absurd.
    • CommentAuthorturtles
    • CommentTimeDec 27th 2008
     permalink
    Yeah,

    The previous version of the DynDNS updater could immediately find out when the PPPoE connection was lost. It could also re-dial it by itself. This version is still available for download on DynDNS website, but I couldn't make it work with OpenDNS or DNS-O-Matic. The solution I've found for now is inadyn running as a service, updating OpenDNS, and checking every 30 seconds if the IP has changed.

    I believe that OpenDNS updater should be able to verify, without communicating with OpenDNS server, if the WAN IP address has changed, and then update the IP address on the server.
    • CommentAuthorMarc
    • CommentTimeDec 27th 2008 edited
     permalink
    "Just about every DSL "modem" out there has its own HTTP server accessible from within the network. And one of its pages displays the public IP address.

    Checking that page can be done frequently and it never goes outside the local area network."

    Then try to find a very good dictionary of all those URLs of all possible routers and modems.

    The OpenDNS Updater does use HTTP and DNS requests to lookup the outer-world-IP to ensure it finds the correct IP, even in some weird enviroments there providers use proxies and such. I don't think this will change any time soon.
    Thankful People: billso
    • CommentAuthoredavid3001
    • CommentTimeDec 27th 2008
     permalink
    Doesn't everyone who uses OpenDNS select to block adult sites? Perhaps that should be the default?

    Or another take -- a different set of IP addresses so one set of servers have adult sites blocked if no default profile is found, another set of IP addresses for DNS which are not.. That way the updater doesn't have to ping every 30 seconds.

    Anyway, just ideas.
    • CommentAuthorbillso
    • CommentTimeDec 28th 2008
     permalink
    Can't you put a local proxy server between your clients and your router? Then you'd only have to worry about the proxy's IP address.
    • CommentAuthorRed Prince
    • CommentTimeDec 28th 2008
     permalink
    No dictionary is needed, Marc. Just have the user find the URL and enter it in the software. That is how the DynDNS updater does it. That is how every single updater I have ever used did it.

    And, of course, if the user does not configure it, then the software uses a default server on the web. But any congestion that will cause is on the user's conscience.

    "I don't think this will change any time soon." That is why I would not touch the OpenDNS updater with a ten-foot pole!

    "Doesn't everyone who uses OpenDNS select to block adult sites?" No. Especially not with all the false positives.
    • CommentAuthormboverload
    • CommentTimeDec 28th 2008
     permalink
    edavid: We don't all use OpenDNS at work. A significant portion use it at home, where only blocking adware/malware and phishing would be enabled.
    • CommentAuthorturtles
    • CommentTimeJan 6th 2009
     permalink
    The proxy server solution seems to be a very good one. I'll do a little exploration in that direction I think.

1 to 11 of 11

  1.  

This discussion has been inactive for longer than 30 days, and is thus closed.