Why is my WAN IP Address Local?

Discussion in 'Tomato Firmware' started by esper, Oct 9, 2012.

  1. esper

    esper Serious Server Member


    I have a personal server that I've been using for years now. I have a domain name registered through GoDaddy. I recently moved into a new apartment and had to sign up for Time Warner Cable, rather than Comcast which I had previously used at a few different locations with said server. When I had moved in the past, I would just update the DNS "@" record on GoDaddy's site to whatever my external IP address was, which from what I can remember was always located under WAN - IP Address on Tomato's Overview page. From there, everything would work great as I already had all of the appropriate ports forwarded, etc.

    I just had internet installed and I'm able to access the internet, but I can't connect to my website. I notice that Tomato lists my WAN - IP Address as . This is obviously a local address, and when I use whatismyip.com I get a different, true external address. Obviously I put in the external address into GoDaddy's settings, but I'm still unable to connect to my site after 2 days. I have a feeling the problem is relating to the local address the router is showing. I can actually hit my site when I go to in a browser when I'm on my network. Why is this happening?

    I had a long discussion with Time Warner and they said the problem is not on their end, as the true external public IP should be showing in the routers settings. They said I should contact Asus (the model of my router) - but I obviously can't do that because I have Tomato installed.

    I can't seem to find many other threads posted by users with a similar issue. I tried manually changing the WAN Port MAC Address, but that just updates the IP Address to I'm officially stumped. Any advice would be GREATLY appreciated. Thanks.
  2. kthaddock

    kthaddock Network Guru Member

    Do you have ADSL or LAN ? Seem your provider gives you a no public address,
    What program and router have you in use ?
  3. rs232

    rs232 Network Guru Member

    If you have a modem or cable modem that terminates the connection chances are that this is also performing a router functionality. If that's the case the modem gets a public IP and does natting + DHCP towards tomato or anything else connected to it.
    Some modems have the function to work in "modem mode" (AKA bridge) or transparent or whatever you want to call. If set this way they will pass the public IP to the device connected on the LAN side.I suggest you set it this way.
    What do you get if you point your browser to I would have though that's the ip/admin interface of the modem.
  4. esper

    esper Serious Server Member

    I figured out the issue late last night. Turns out the modem that my ISP provided was ALSO a router, and I did not realize it. Having two routers linked together was messing everything up. The solution was to turn the ISP's device into a "bridge" and then I was able to use my own router per usual. Thanks for the input.
  5. kthaddock

    kthaddock Network Guru Member

    You have already get answer here:
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