Question:
How do you change your IP address of your router?
2018-06-29 13:35:55 UTC
I search online and through Windows, I changed the IPv4 address but that was not I what I was looking for. The IP address of the router did not change. The IP addresses are the same for all my computers and laptops.
So how do I change my IP address of my router or internet, not changing the computer's IPv4?
Is it even possible?
Thirteen answers:
?
2018-06-29 23:17:28 UTC
ISPs normally assign a single public IP address to each home Internet connection. With IPv4, there are simply too few addresses for every device to have a public address of its own.



Your router has a feature called Network Address Translation (NAT), or more accurately Network and Port Address Translation (referred to as NAT and PAT). When you make an outgoing connection to a website, the NAT function changes your computer's local private IP address into the router's public address on the Internet (or in some case such as in an apartment block, to an address on another subnet covering the different apartments). The router remembers which addresses (source and destination) and which ports (source and destination) were used by the computer and by the router when the connection goes out on the Internet. When a response comes back, the router checks the addresses and ports (although source and destination are swapped over) and does the reverse mapping.



If a computer on private address 192.168.0.11 with source port 12345 opens a connection to an http site on address 123.123.123.123 port 80 (the http port), the router will change the 192.168.0.11 to its public address (say 111.222.112.221). The destination address and port are unchanged. The source port may not be changed; however, if another computer on the private network (192.168.0.12) opens an http connection to the same website, and by chance is using the same source port number, then there is nothing to tell the site that it is a different connection. In this case, PAT comes into play and the router changes the source port number to one it is not using on the Internet. When the response comes back reverse NAT and PAT can route the response to the correct computer.



Although the destination port on an outgoing connection is normally predefined (80 for HTTP, 443 for HTTPS, 25 for SMTP, etc) the source port is picked at random by the source computer's operating system from the higher numbered ports. Open two connections from two tabs in a browser with both connecting to the same site, and the connections will have different source port numbers assign by the operating system. This will happen even without a NAT/PAT router being present



The NAT function in the router is why all computers on a home network can have the same public IP address.



Depending on how your ISP assigns and manages public addresses, your public address may never change. It may change spontaneously normally only at a maximum of perhaps twice a day unless you disconnect from the ISP. Disconnecting from the ISP for a period of time can mean the ISP will assign that address to someone else and you will be assigned a different address when you reconnect.



Generally there is no need to change your public IP address. If your router is working correctly, it will only let in packets from the Internet that are responses to outgoing packets. If you want to run some form of Internet accessible server, then you will have to configure port forwarding that will tell the router to allow packets arriving on the public IP address with a specific port number, such as 80 for an HTTP web server, to send these packets to the specific computer on your internal network that is hosting the HTTP server application.



I hope this helps.
?
2018-07-12 22:24:54 UTC
don t know.Try youtube hey glad to help out
Smokies Hiker
2018-07-05 00:46:09 UTC
If you're talking about the "public" IP address, it is assigned by your internet provider, and is subject to change at any time, and may also be assigned to multiple connections in the same locality, such as a small city or an entire neighborhood with the same provider.

You essentially have no control over your public IP address when your provider is in control.
The_Doc_Man
2018-06-30 13:38:04 UTC
There is a more practical question than "How..." - it is "Why..." There IS NO VALID REASON for you as a consumer of internet services to change your router's IP address unless you have been doing something that you want to hide. In fact, as noted in some of your other answers, there is no easy way for you to be sure your IP address hasn't changed since the last time you rebooted your modem, since the odds are not zero regarding the possibility that your modem's address is ALSO part of a DHCP block, just as your in-house computer devices are part of the modem's local DHCP block. AND there IS a chance that if it is a modern modem and your ISP has converted to this, that your actual address is an IPv6 address and that you are only seeing the Network Address Translation of IPv6 down-converted to a "local" IPv4 address.



Therefore, ask yourself why you want to do this. And if it is because you are trying to hide, maybe you should stop doing things so bad that you know you need to hide them.
?
2018-06-30 03:09:29 UTC
You have TWO IP's - One Public and one Private. Your Public IP is assigned to you by your Internet Service Provider. It goes to your MODEM/Router. Then Your Modem/Router assigns your Private IP to your computer. You can not change your Public IP and there is no reason at all to mess with the Private IP. Let the Modem do it Automatically. It will be 192.168.xxx.xxx. or 10.10.xxx.xxx
Andy T
2018-06-30 01:16:22 UTC
Which one? The Public-facing WAN or Local-facing LAN IP? WAN nothing, you are given that from the ISP, I think you can put in a command to trigger timeout and essentially suggest a DHCP renewal, but whether you are given the IP address you wish for is totally up to them not your control. But for local LAN you do it via its configuration app website and do it according to the procedure outlined in the manual.
PoohBearPenguin
2018-06-29 21:05:51 UTC
You can change the private (LAN) IP address but not the public (WAN or ISP) address.



The ISP is the only one that can give your router a new public or ISP address but even then, this isn't the address that the rest of the internet sees anyways - that's the ISP's router and you have no control over that at all.
David E
2018-06-29 17:36:01 UTC
Network Address Translation is why all your computers have the same address. They don't all have the same IP address but share ONE external address assigned to you by your ISP.



To change the address your ISP assigns you, unplug your router for a day or two. There is a protocol called ARP or Address Resolution Protocol. It associates your MAC address (layer 2 on the OSI model) with your assigned IP address. It remembers this association for a default, 3600 seconds (1 hour) since the last time they heard from that device. Then the ISP will put your old address on the top of the stack of available IP addresses. So I say a day or two because you need someone ELSE to turn on their modem and take your old IP address. Then when you turn on your modem, you get a new IP address.
2018-06-29 13:43:40 UTC
Your router assigns each device an IP address, and it changes every time it shuts down and is turned on again. You could get a reserved IP address. Here's how.



Instead of having to manually configure the settings on every PC we want to give a static IP address to, we will simply “reserve” the address we want to give them in the router’s automatic IP address system. By doing this, we ensure our machines have an IP address that will never change, without actually assigning a “static” IP address as such, which would complicate things. To do this, open up your router configuration page and look for a section on DHCP or LAN IP.



Look at the section labeled Static Leases or Reserved Lease Info. There are two or more fields that need to be filled in. First is the hardware address (6 pairs of alphanumeric characters), which is unique to every network device in the world. Second is the IP you wish to assign it. You should be able to see your hardware address in the list of current “leases” (a lease refers to the address that the router has automatically lent to your device) next the IP it is currently assigned. If not, type IPCONFIG /ALL (from Windows command prompt) or IFCONFIG (from an OS X Terminal) and look for either the Ethernet or Physical Address.



In this case, I want the device with the hardware address E0:CB:4E:A5:7C:9D, currently with IP 192.168.0.10, to stay that way forever. Enter this information to create a new reserved address.



You can also change the IP address from here if you’d like the reserved one to be different to what it is currently, but you will need to restart the device in order to get the new address. You are basically “tying” a particular local IP address to a particular piece of hardware.



There's pictures and more helpful info from this MakeUseOf article I just read (not a paid promotion):
Loo.Tennant
2018-06-29 13:43:35 UTC
Have you tried opening up a 'Command Prompt' window and using the IPconfig/flush & IPconfig/ renew commands?
RKCO
2018-07-01 09:31:30 UTC
Log into your account. Open your browser and enter the manufacturer's default IP address, typically located on the underside of your router or in the user manual. ...

Open the basic setup tab. ...

Change one (or both) of the last two numbers in the IP address. ...

Click Apply, and wait for your router to reboot.
Adrian
2018-06-29 20:00:59 UTC
Your public IP address, the one the Internet sees, is controlled by your ISP and it may be difficult to change. The ISP can change it of course, but usually they do not want to as that just adds more records in their tracking of all traffic.

In some cases, turning off the modem may cause a new IP to be assigned by the ISP's DHCP servers - maybe. How long you need to turn off the modem could be a day or a week, or more. In some cases, the IP assigned to your service is fixed for several months by the ISP.



So, there is no easy fix to change your public IP address. In some cases simple methods like turning off the modem will work. In other cases, no matter what you try, it will not just change.



You can definitely change your public IP address by changing your ISP, getting a different service provider. ISPs all have a different pool of IP addresses they use to allocate to their customers.
2018-06-29 16:14:14 UTC
_Which_ IP address of your router? A router has two IP addresses (at least): one for the upstream connection, which it gets assigned from its upstream router, and one for the downstream connection, at which the connected devices can reach it.



The downstream IP is usually something like 192.168.x.y (192.168 is a reserved address space for local IPs) and is easy to change - just go into that router's setup (usually, but not always accessible as a website from any local device) for the LAN (downstream) settings and change it.



The upstream IP is also usually changeable. Again, go into the router setup for the WAN (upstream) settings, switch off DHCP and assign an IP address.



Of course, in doing this, if you don't know what you do and haven't coordinated that move with the admin of your upstream router/ISP, you just have disabled your internet access. But you have changed your router's IP.


This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.
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