Changing IP Addresses
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  1. #1

    Changing IP Addresses

    (Submission From
    Changing IP Addresses

    I. About
    This is my second submission to, my first was an explanation of using proxies on IRC. This tutorial will teach teach you how to change your ip address to any other one on your ip range instead of having your DHCP Server pick one for you. This is very usefull because you can change your ip when you are getting DDoS'ed or if you wish to piss off someone running a webserver (or other service) on your ip range, it is also usefull to get around a bans as long as the ban only covered your ip not your whole ip range.

    As usualy anything illegal you do while reading this tutorial or after reading this tutorial is not my fault, your actions are your own so don't blame me. I do not claim that the things I teach are legal, so concider that everything i mention here is illegal if you are not sure your self.

    II. Needed Information
    Before you can change your ip you need some information. This information includes your ip range, subnet mask, default gateway, dhcp server, and dns servers.

    1. Getting your IP range - Getting information about your ip range is not difficult, I recomend using Neo Trace on your own ip. But for our test just look at your ip address, say it's you can definetly use the ip's found between < [new ip] <, dont use x.x.x.1 or x.x.x.255. To find your ip simply open a dos/command prompt window and type ipconfig at the prompt, look for "IP Address. . . . . . . . . . . . : x.x.x.x".

    2. Subnet Mask, Default Gateway, DHCP Server - These are very easy to find, just open a dos/command prompt window and type 'ipconfig /all' without the ' '. You should see something like this:
    Windows IP Configuration

    Host Name . . . . . . . . . . . . : My Computer Name Here
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Unknown
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : xxxx.xx.x
    Description . . . . . . . . . . . : NETGEAR FA310TX Fast Ethernet Adapter (NGRPCI)
    Physical Address. . . . . . . . . : XX-XX-XX-XX-XX-XX
    Dhcp Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IP Address. . . . . . . . . . . . :
    Subnet Mask . . . . . . . . . . . :
    Default Gateway . . . . . . . . . :
    DHCP Server . . . . . . . . . . . :
    DNS Servers . . . . . . . . . . . :
    Lease Obtained. . . . . . . . . . : Monday, January 20, 2003 4:44:08 PM
    Lease Expires . . . . . . . . . . : Tuesday, January 21, 2003 3:43:16 AM

    This is all the information you will need for now, I sugest you either keep your dos/command prompt window open or copy & paste the information somewhere, to copy right click the window and select text and click once.

    III. Changing your IP Address
    To change your ip address first pick any ip you like out of your ip range and remember it or write it down. It is usualy a good idea to make sure the ip is dead (except for what we are going to do later on) so just ping it via "ping x.x.x.x" and if it times out then you can use it. Now go to My Computer, then Control Panel. In Control Panel select Network Connections and pick your active connection, probably Local Area Connection or your ISP name. Open that connection by double clicking on the icon in Network Connections, then select Properties under the General Tab. In the new window that pops up select Internet Protocol (TCP/IP) and click properties, it's under the general tab. In this new window select the General tab and choose "Use the following IP address" and for the IP address enter the ip you would like to use (the one you picked from your subnet earlier) and for the Subnet Mask enter the subnet mask you got when your ran ipconfig /all, same goes for the Default Gateway. Now select "Use the following DNS server addresses" and enter the information you got earlier. Now just click OK. Test that it worked, try to refresh a website and if it works you know everything is okay and you are connected. To make sure the change worked type ipconfig agein and the ip address should have changed to your new one.

    IV. DDoS & DoS Protection
    If your firewall shows that you are being ddosed, this is usualy when you are constantly getting atempted UDP connections several times a second from either the same ip address or multiple ip addresses (ddos), you can protect your self by changing your ip address via the method i described above.

    V. Webservers & Other Services
    If you know someone on your ip range is running a webserver and he or she has pissed you off or you just like messing around you can "steal" their ip address so any dns going to that ip will show your site instead because you would be running a webserver your self.

    To "steal" an ip is to basicaly use the changing ip address method above and picking an ip that someone that is running a webserver has in use. Often you will be able to keep that ip at least for some time, other times you wont be able to use it so just keep trying untill it works. You your self will need to have a web server on the same port with your message. You can do this with other services too. You can also DoS or DDoS the ip address you are trying to steal to kick him off the net, but I dont recomend as its pretty illegal, your isp will get pissed and feds may go ape-****.

  2. #2
    Just a Virtualized Geek MrLinus's Avatar
    Join Date
    Sep 2001
    Redondo Beach, CA
    Is this your tutorial? (ie, did you write this for Astalavista?)
    Goodbye, Mittens (1992-2008). My pillow will be cold without your purring beside my head
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  3. #3
    Senior Member
    Join Date
    Jan 2003
    Originally posted here by MsMittens
    Is this your tutorial? (ie, did you write this for Astalavista?)
    According to his other thread they aren't

    Sorry, this is not an orginal, but the other 2 are from a firend of mine who gave me permission to post them. after he posted them on
    IT Blog: .:Computer Defense:.
    PnCHd (Pronounced Pinched): Acronym - Point 'n Click Hacked. As in: "That website was pinched" or "The skiddie pinched my computer because I forgot to patch".

  4. #4
    AO Veteran NeuTron's Avatar
    Join Date
    Apr 2003
    Tutorials are something that you spend time writing yourself and then post for the community. It usually takes quite a long time to put out a worthwhile tutorial. You have posted 4 tutorials in a couple of days that aren't even yours. You may want to hold off on writing tutorials for a while until you get a better feel for how things flow at AO. I know that you are only trying to make a contribution but a lot of people are going to take it the wrong way. Good Luck

  5. #5
    Just a Virtualized Geek MrLinus's Avatar
    Join Date
    Sep 2001
    Redondo Beach, CA
    Well, actually, he has written two tutorials (related to VB) ... which seem fine so I don't understand why the need to post others that are done by others.

    Szafran, some advice: don't worry about those little numbers beside your name. If you think that certain tutorials at other sites are worthwhile for the community, do a post that gives a brief descript and then post a link to them. Far more powerful than doing a C&P exercise.
    Goodbye, Mittens (1992-2008). My pillow will be cold without your purring beside my head
    Extra! Extra! Get your FREE copy of Insight Newsletter||MsMittens' HomePage

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