dynamic dns IP assignment from behind router

From: Matt Price (matt.price_at_utoronto.ca)
Date: 09/05/03

  • Next message: Michael D Schleif: "spamassassin: whitelist_from_rcvd ?!?!" 
    Date: Thu, 4 Sep 2003 22:42:11 -0400
To: debian users <debian-user@lists.debian.org>

    Hi folks,

    I'm trying to get a dynamic dns client working on my home machines.
    The home connection is dsl (bell sympatico in Canada), and works fine,
    but the IP seems to be changing more often nowadays than it used to.
    I've set up a little network between my office and my home, so it's
    somewhat important for me to have some way of knowing what my home IP
    is when I'm at work... dynamic dns seems to be the answer.

    At home, 3 computers (1 debian desktop, one debian laptop, one windoze
    xp laptop) sit behind an SMC Barricade router. IP assignment on this
    intranet seems to work fine, and I only mention it b/c I suspect the
    router plays into some of my difficulties (see below).

    So I went and got an account at dyndns.org (mmtprice.dyndns.org). Set
    up through their web interface works without a hitch, and I'm able to
    change the IP address assigned to the domain name instantaneously on
    the web site. I verified this from a couple of different computers
    using ping.

    Unfortunately, though, I haven't yet been able to get any of the
    dynamic dns clients available in debian to actually remap the hostname
    correctly. I've tried and failed with both ddclient and ipcheck,
    leading me to wonder whether (a) I'm missing some basic point, or (b)
    there's some serious problem with my setup.

    -- neither script seems to be able to interact well with my router,
    though both have switches that are meant to get IP data from the SMC router.

    -- so I've resorted to using "checkip.dyndns.org" to figure out what
    my IP address is.

    --ddclient seems to be ble to figure out the address, but as far as I
    can tell it doesn't actually SET the IP at dyndns.org. Unfortunately
    ddclient doesn't have very verbose messaging, so I'm not exactly sure
    what's going wrong. One thing I noticed is that I do not get an error
    message if I change my username or password, suggesting to me that
    whatever goes wrong happens before this stage.

    For reference, here's my /etc/ddclient.conf
    # Configuration file for ddclient generated by debconf
    #
    # /etc/ddclient.conf

    pid=/var/run/ddclient.pid
    protocol=dyndns2
    # use=if, if=
    server=members.dyndns.org
    login=WishYouKnew
    password=NotTelling
    # use=smc-barricade, fw=192.168.2.1:80
    # fw-login=admin
    # fw-password=WontSay
    use=web, web=checkip.dyndns.org, fw-skip='IP Address' mercey.dyndns.org mprice.dyndns.org

    -------------

    ddclient gives the following responses:

    # ddclient -daemon=0 -query
    use=if, if=eth0 address is 192.168.2.198
    use=if, if=lo address is 127.0.0.1
    use=web, web=dyndns address is 67.69.252.101
                                   ^^^^^^^
                                    this is the address I want

    # ddclient -daemon=0
    WARNING: unable to determine IP address

    --------------

    Isn't that kinda wierd?

    Anyone know what's going on?

    thanks as always,

    matt 

    -- 
To UNSUBSCRIBE, email to debian-user-request@lists.debian.org 
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
  • Next message: Michael D Schleif: "spamassassin: whitelist_from_rcvd ?!?!"

    Relevant Pages

    • Re: dynamic dns IP assignment from behind router
      ... > I'm trying to get a dynamic dns client working on my home machines. ... > router plays into some of my difficulties. ... I've been using this solution with ipcheck for a year now and it's worked ...
      (Debian-User)
    • Re: Dynamic DNS Updater
      ... Obtains the WAN IP from my router ... Contacts DynDns.com and updates my Dynamic DNS domain. ... I think that ddclient does what you want. ...
      (Ubuntu)
    • Re: [opensuse] ddclient on opensuse 10.3
      ... I am behind a router, but I'm not sure that matters. ... The method I'm havening problems with is running ddclient in daemon mode ... the new PID is different than the one listed in this log. ...
      (SuSE)
    • Re: Dydns service
      ... >>dyndns.org has a free service. ... update client: ddclient ... A client to update dynamic DNS host entries. ...
      (Fedora)
    • Re: FTP site
      ... I am sure that ddclient is NOT going to work if it is placed behind a router. ... No you can make ddclient work from behind a NAT router. ... IT Services Division, Kilburn Building, Oxford Road, Manchester M13 9PL. ...
      (Ubuntu)