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How to reset IP address?

Discussion in 'BlackHat Lounge' started by yaleinnovator, Jun 25, 2014.

  1. yaleinnovator

    yaleinnovator Power Member

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    I have two computers with the same IP address which is causing problems. I tried to ipconfig/release ipconfig/renew but I get the error "No operation can be performed on a Local Area Connection* 11 while it has its media disconnected.

    I tried resetting router/modem, made sure "Obtain an IP address automatically" are all enabled. DHCP is enabled.

    Any advice?
     
  2. manking

    manking Regular Member

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    I'm not sure, but if you use one modem, then you can't have two different IPs, since the modem gives the IP. Also it might be router malfunction, if there is a routerupdate, then do it, if not if you have another router, try if this gives the same results
     
    Last edited: Jun 25, 2014
  3. Aty

    Aty Jr. VIP Jr. VIP

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  4. proxygo

    proxygo Jr. VIP Jr. VIP Premium Member

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    true thats why we have routers. but even without 1, u can run 2 pcs with 1keyboard mouse
    monitor and 1 modem. i do it, call splitters, 2 cables from 1 monitor to each pc,
    an rj45 ethernet splitter 2 short ethernet cables running to each pc ethernet port
    and 1 ethernet running into the cable modem. but, only 1 pc can be on at any time
    or it wont work + kvm switch for the beyboard mouse.
     
  5. yaleinnovator

    yaleinnovator Power Member

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    I updated it with Windows Updater and same results.

    Just tried it, both computers still have the same external ip

    proxygo any thoughts? I'm using one wireless and two ethernet with the one router and modem
     
  6. proxygo

    proxygo Jr. VIP Jr. VIP Premium Member

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    so my guess is, modem is plugged into the router
    2 units via ethernet are plugged into the router and another
    is using wireless correct making 3?
     
  7. yaleinnovator

    yaleinnovator Power Member

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    yes this is correct.
     
  8. proxygo

    proxygo Jr. VIP Jr. VIP Premium Member

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    well technically is thats so, the router should assign something like this
    to all 3 items this is just an example

    200.20.20.5 - 200.20.21.5 - 200.20.22.5 -
    as there all on the same network there should be a minor difference
    between each 1, i believe its the third number that always shunts up a digit
    or 2 per pc attached to the router . i use a net gear when i need my other stuff
    online wifes pc / ps3/ps4/tv box/ all work fine

    1. renew IP Address Click Start, then select Run and type CMD
    Type ipconfig /release - ipconfig /renew - ipconfig /flushdns

    2 reconfigure Static IP Address - If your computer is using a static IP address, it is
    best to try and use a different one in the same subnet. One way to check to make s
    ure the one you are picking is not already being used is to simple ping the
    IP addresss (ping x.x.x.x).

    3 Use DHCP - If you don't need to use a static IP address, it's best to simply choose
    DHCP instead of manually configuring the IP address. The server will know which
    addresses are free and which are taken

    4 Update firmware - In some rare instances, the actual DHCP server can malfunction
    and assign more than one computer the same IP. In this case, it is best to try and
    update the firmware on your router.
     
    Last edited: Jun 25, 2014
  9. yaleinnovator

    yaleinnovator Power Member

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    Two of the computers have the same one and the other IP is completely different (not 1 or 2 off). When I open the router settings and click DHCP Reservation it shows the IPs 1 number off and all different like you said. i.e ***.***.*.106, ***.***.*.107, ***.***.*.108. But with the proxy service I'm using, when trying to allow each computer to use them it shows different IP addresses than what is shown in the DHCP Reservation.

    If I clone my MAC address the identical IP of the two computers changes but they'll still share the same IP. The third doesn't change.

    I tried ipconfig /release - ipconfig /renew - ipconfig /flushdns nothing yet. Not sure about your #2 and #3. And I just updated my firmware.

    Anyone with expertise?
     
    Last edited: Jun 25, 2014
  10. lancis

    lancis Elite Member

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    Switch to static IPs, thats the fastest solution.
     
  11. cyber.surfer

    cyber.surfer Regular Member

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    OP I failed to understand what you meant by "two computers having same ip" in your original post. Are you talking about public or private ip? If public it will remain same for all the pc's you connect with the same modem. If private you can configure them manually and change if the ip's are conflicting.
    Okay let me tell you the basics. When you use services like whatismyip.com then the ip shown there is your Public IP(--this is the ip which google or any other site logs) and the IP which you see on your computer using ipconfig cmd or by clicking on details your adapter window that is your Private ip address(intranet) which differs in different classes of IP address, ie a, b and c. In class a it ranges from 10.0.0.0 to 10.255.255.255, class b from 172.16.0.0 to 17.3.255.255 and class c from 192.168.0.0 to 192.168.255.255.
    Now comes dynamic IP and static IP. If the IP provided by your ISP is dynamic in nature then every time you reset/restart your modem you get a new ip and if its static you will get stuck with one no matter how much time you reset the modem.
    I hope I have cleared your doubts. If not feel free to ask.
     
  12. Infestor03

    Infestor03 Jr. VIP Jr. VIP Premium Member

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    I also suggest to set static ip to solve the problem.
     
  13. Gogol

    Gogol Elite Member

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    If I have understood you correctly, you only have one internet connection which you are splitting into two computers. That way, you will always have one external IP. That's how it is supposed to be. Your internal IP would be different, but external IP would be the same. When you use a router, the router acts as a computer which connects to the wan and distributes the connection to n number of computers.

    If you need different IP, try getting two connections and two routers, or setup a proxy may be ( not sure on this one, but it should work).
     
  14. yaleinnovator

    yaleinnovator Power Member

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    Yes my IPs are dynamic and it is one of the Public IPs that needs to be changed. I would like to configure them manually or make them static.

    Its one router/modem to three computers at the moment. Two have conflicting IPs and one doesn't and they are all adjacent to each other.

    This is what I would like to do I know how to input it via Internet Protocol v4 but not sure where to find an available IP/Subnet/Gateway combination?
     
  15. keywordspot

    keywordspot Jr. VIP Jr. VIP Premium Member

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  16. Disloyal

    Disloyal Jr. VIP Jr. VIP Premium Member

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    Your gateway is the routers IP address, if you haven't changed anything around it should be 192.168.1.1. The subnet usually is 255.255.255.0, again unless you changed anything. As for IP, if everything is default like I stated before you can use anything between 192.168.1.2 - 192.168.1.254 also depends what IPs are taken by any other device on your network.

    You can find your IP/Subnetmask/Gateway by opening a command prompt and typing in "ipconfig". Once you have that just go to the network setting and IPv4 properties and input the info you gathered and set the IP you would like withing the range given.