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Virgin Media Broadband - Change IP ?
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Old 27-07-2018, 11:17   #1
beaker17
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Virgin Media Broadband - Change IP ?

I simply wish to change my IP.

How can I do that please without creating any problems ?

A web link gave this -
"Click Start->Run, type cmd and press Enter. Type ipconfig /release at the prompt window, press Enter, it will release the current IP configuration. Type ipconfig /renew at the prompt window, press Enter, wait for a while, the DHCP server will assign a new IP address for your computer."

Is this correct, easy and safe ?

I cut the power to my computer for 10 minutes - same IP

Last edited by beaker17; 27-07-2018 at 11:58.
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Old 27-07-2018, 11:59   #2
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Re: Virgin Media Broadband - Change IP ?

The only way is to change to Modem Mode if you are in Router Mode but you will require to invest in your own router.
Why do you want to change anyway?
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Old 27-07-2018, 12:20   #3
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by RobboEdin View Post
The only way is to change to Modem Mode if you are in Router Mode but you will require to invest in your own router.
Why do you want to change anyway?
Security - I have had my current IP long enough.

If its not as easy as that method I gave in my OP - forget it. I don't intend to buy anything.

"If it works OK, don't fix it"

If the power is turned off overnight, the modem will allocate a new IP.
True or false ?

Last edited by beaker17; 27-07-2018 at 13:08.
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Old 27-07-2018, 18:35   #4
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Re: Virgin Media Broadband - Change IP ?

Quote:
Quote from beaker17:


If the power is turned off overnight, the modem will allocate a new IP.
True or false ?
Unlikely. VM's IP numbers are quite sticky and it usually needs something like a re-segmentation to change the numbers. The IP numbers are allocated by network DHCP to specific modems when they request one rather than the other way. Normally the IP number has a "lease" period. At the end of the lease period the number is dropped and the modem requests a new one. Usually the one that is available is the one that the modem just dropped. Hence the "stickyness"

As above switching to modem mode from router mode will change the IP. I suspect that switching back will just retrieve the original one unless a significant period is involved.
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Old 27-07-2018, 18:53   #5
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by beaker17 View Post
Security - I have had my current IP long enough.

If its not as easy as that method I gave in my OP - forget it. I don't intend to buy anything.

"If it works OK, don't fix it"

If the power is turned off overnight, the modem will allocate a new IP.
True or false ?

I did manage to change mine doing that but that was over 15 years ago, so as heero_yuy says it is probably unlikely now.
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Old 27-07-2018, 19:10   #6
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Re: Virgin Media Broadband - Change IP ?

What's the security risk you think having the same IP is causing?
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Old 27-07-2018, 19:34   #7
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Re: Virgin Media Broadband - Change IP ?

Changing your IP has a near-zero impact on security.
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Old 27-07-2018, 19:42   #8
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by flummox View Post
Changing your IP has a near-zero impact on security.
Exactly.
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Old 27-07-2018, 20:00   #9
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Re: Virgin Media Broadband - Change IP ?

I suspect a different reason for a new IP address.
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Old 27-07-2018, 20:10   #10
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by RobboEdin View Post
I suspect a different reason for a new IP address.
I think you may be right even though @beaker17 said it was for security.

If he was that bothered about security he'd have a VPN.
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Old 27-07-2018, 21:22   #11
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by beaker17 View Post
I simply wish to change my IP.

How can I do that please without creating any problems ?

A web link gave this -
"Click Start->Run, type cmd and press Enter. Type ipconfig /release at the prompt window, press Enter, it will release the current IP configuration. Type ipconfig /renew at the prompt window, press Enter, wait for a while, the DHCP server will assign a new IP address for your computer."

Is this correct, easy and safe ?

I cut the power to my computer for 10 minutes - same IP
This won't work.

As others have said, the *best* way to get a new IP address is to switch to Modem mode (if you're not already IN modem mode). If you're in Modem mode it's trivial, just change the Mac address of the router plugged into it.

This is harder if you're in router/gateway mode as the Mac address is the router side of the Hub itself and you cannot change that. However, this *might* work, this technique is a little-known one that fixes an issue whereby you've changed the Mac address too many times and the UBR is no longer handing you new IP's - it flushes the DHCP cache for your CPE (in other words, you should get a new IP). I haven't tested it on a hub, but it used to work with the modems. Follow the steps exactly.

Power off the hub.
Unscrew the coax cable.
Power the hub back on.
Leave it alone for a few minutes (give it a good 5mins).
Without powering off the hub, screw the coax back in.
Leave it another few minutes (it will eventually come back online).

Check your IP.
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Old 27-07-2018, 22:53   #12
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Re: Virgin Media Broadband - Change IP ?

Does that still work Kush?

Still want to know what the OP's security concern is though if it actually exists.
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Old 27-07-2018, 23:30   #13
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by beaker17 View Post
Security - I have had my current IP long enough.
This is a myth, changing your ip will have zero effect on your "security".
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Old 28-07-2018, 00:57   #14
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by Paul M View Post
This is a myth, changing your ip will have zero effect on your "security".
You know that, I know that 99.9% of other forum members know that.

The OP doesn't though, if that is the true reason he wants to change it.
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Old 29-07-2018, 09:13   #15
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Re: Virgin Media Broadband - Change IP ?

Quote:
Originally Posted by beaker17 View Post
A web link gave this -
"Click Start->Run, type cmd and press Enter. Type ipconfig /release at the prompt window, press Enter, it will release the current IP configuration. Type ipconfig /renew at the prompt window, press Enter, wait for a while, the DHCP server will assign a new IP address for your computer."
just to provide some clarification because it hasn't been explained yet. There are different types of ip addresses and the one everyone is referring to above is the globally routable ip address which the modem/shub receives from VM and is the address the world gets to see when you are on the internet. Because you only get one address from VM and people usually have many internet connected devices such as pc's, laptops, phone, tablets and more, the router does something called NAT and gives the devices on your home network (lan) a different type of address called a local address and on your pc you will be something like 192.168.0.100. When you do what you have described above on your pc all it does is send a request to the router serving the pc (the shub) to renew the address for the pc. What everyone is referring to above is how to renew the routable address the shub gets and as already stated the only way to do it is to either buy a proper router (I won't go into detail why that works) or leave your shub disconnected for several days and hope your ip address gets leased to another shub before you bring yours back online.
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