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Need to change MAC address, how to? Problem Solved! - Page 5

post #41 of 56
Quote:
Originally Posted by Chimeracaust 
You'll have to bear with me, I don't know what a nic is.
Quote:
Originally Posted by Chimeracaust View Post

Did not know that, thanks smile.gif So to be clear, because I am a little slow, the mac is in my wifi card, NOT my cable modem?

You are really going to argue with a network engineer while lacking such fundamental knowledge?

Your wifi card has a MAC, your wired NIC has a MAC, each interface of the switch portion of a home router has a MAC, the WAN portion of a home router has a MAC, your cable modem has a MAC, the remote device you are connecting to within the ISP has a MAC.

A lot of sites put a cookie on your PC when issuing a ban. The old platform for OCN did this. You could come in on a proxy from a completely different continent, but if the GUID assigned to your cookie matched a registered user, you were flagged for multiple accounts.

To reiterate, once a packet arrives at a destination host outside of your LAN, it does not contain any MAC address that you own.
Edited by beers - 2/2/12 at 3:59pm
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post #42 of 56
Thread Starter 
Quote:
Originally Posted by beers View Post

You are really going to argue with a network engineer while lacking such fundamental knowledge?
Your wifi card has a MAC, your wired NIC has a MAC, each interface of the switch portion of a home router has a MAC, the WAN portion of a home router has a MAC, your cable modem has a MAC, the remote device you are connecting to within the ISP has a MAC.
A lot of sites put a cookie on your PC when issuing a ban. The old platform for OCN did this. You could come in on a proxy from a completely different continent, but if the GUID assigned to your cookie matched a registered user, you were flagged for multiple accounts.
To reiterate, once a packet arrives at a destination host outside of your LAN, it does not contain any MAC address that you own.

Neither post was argumentative, just simple questions. And like I said, I'm a little slow, and all this way outside my area of expertise, so the question I was asking was is there any reason at all I needed to replace my modem?

Cookies are not the issue, I am worried about computers other than mine, and I have a completely new computer anyways. Ebay doesn't want suspended seller opening new accounts, or using other accounts, so what I heard was that they will ban any account from any computer with matching ip or mac address, as "related or linked" accounts.

Again I am not trying to be argumentative, I am just confused and trying fix a problem, thus I am asking for help. So simply put, you are saying my modem's mac cannot be determined by outside sites and I don't need to change it?

EDIT: To be super clear I also have a new router, so only thing I am worried about linking is the modem, thus my concern.
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post #43 of 56
What beers said is right.

Every step of the way to ebay has a different MAC address. From your NIC > router > modem > ISP switches > ebay servers, every single one of those items contain different MAC addresses, and the packet coming from your computer doesn't ship over the MAC address of your NIC along with it. A MAC address ban is, as far as I know, impossible.
For proof, if you go to the Windows command prompt and type in 'tracert ebay.com' you'll see every hop that packet goes through to get to the ebay servers.

What they're banning is your IP. And it's not the 192.168.x.x local IP your router assigns, it's your external IP, the one your ISP gave you (click here for your actual IP). Any packets coming from that IP will be recognized by the ebay servers as being a banned IP and will keep you from accessing the site. What you need is a new external IP.

Why some people may have mentioned MAC address is because, as has been mentioned in the thread, changing your modem (and therefore its MAC address), might cause your ISP to issue a new IP, hence no more blocking from the ebay servers. I don't know if it's possible to call an ISP and request a new IP, you'd have to ask them.

And it is very, very easy to change/spoof the MAC address on your computer (useful for accessing MAC-filtered hotel networks, but I didn't say that), all you need is a batch script with a registry edit wink.gif Not that that is useful for you, but I felt the need to clear up a point of confusion in this thread.
You cannot change the MAC address on your modem. You'd have to get a new one.
post #44 of 56
Quote:
Originally Posted by Chimeracaust View Post

Neither post was argumentative, just simple questions. And like I said, I'm a little slow, and all this way outside my area of expertise, so the question I was asking was is there any reason at all I needed to replace my modem?
Cookies are not the issue, I am worried about computers other than mine, and I have a completely new computer anyways. Ebay doesn't want suspended seller opening new accounts, or using other accounts, so what I heard was that they will ban any account from any computer with matching ip or mac address, as "related or linked" accounts.
Again I am not trying to be argumentative, I am just confused and trying fix a problem, thus I am asking for help. So simply put, you are saying my modem's mac cannot be determined by outside sites and I don't need to change it?
EDIT: To be super clear I also have a new router, so only thing I am worried about linking is the modem, thus my concern.

Ill let beers handle this. He knows WAAAY more about this than I do.

But basically, Everyone on your outgoing IP (i.e. all internet ready devices in the house) are SOL for sites that have you banned until the IP is changed.
And even then, if your browser has a cookie related to the sites/ban, going to a site that had you banned after you get the IP change May mean your new IP is banned.
EDIT: Cookies help them determine what is a related account.

Depending on your ISP, your service is tied to the serial number of your modem, meaning changing the MAC on the modem probably wont change your IP.
EDIT: And as stated, to the best of my knowledge, that cant be done.

If you lack knowledge in this, the first step should be to welcome all input, even if it conflicts with what you have read elsewhere.
OCN is full of people who know more than you, just like it is full of people who know more than me.
Its why OCN is such a good resource.

If I was the pinnacle of computing knowledge on the forum we would be screwed.biggrin.gif
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post #45 of 56
You do not need a new modem or router.

As stated above, everyone in your house shares the same WAN IP address due to Port Address Translation.

Some misinformed individuals will change their LAN IP and then wonder why they are still banned from some sites and then quote "Only thing left would be the MAC!".
This is independent of the WAN IP.

If you do acquire an IP ban, you can MAC clone another MAC onto your router's WAN interface to acquire another WAN IP address.
There may be a period of 5-20 minutes while the previous DHCP assignment times out and waits for the lease to expire as the ISP will only give you a singular WAN address.

Apologies for coming off a little short, but I'm sure you can understand the frustration when somebody asks a question only to have your advice refuted instantly with "that's wrong".
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post #46 of 56
Well if you are IP banned, only the ISP can help you with that by assigning a new IP address. You may or may not have to pay for a new one. I don't know. If you are account banned you need to make a new account.

MAC address changes with each device hop. Nothing past the first router or switch (assuming you are on a network) will know about your MAC address. You're computer's MAC will not go any further than a router/switch or you modem (if you are connected to a modem.

Think of it as playing telephone without the message changing. There are 10 people. Person 1 is the start and 10 is the end. 1 tells 2 a secret, 2 tells 3 but 3 knows nothing about 1 other than that's where the original secret came from. That continues till person 10. Person 10 is only aware of person 9 but knows person 1 made the secret. Person 10 will never have a direct conversation with person 1.

Same thing applies to internal IP address. At least 3 billion if not more devices start with 192.168.1.x or 192.168.0.x. That is the internal IP address. Think of it as a nick name that only people in your house call you. For example if your name is Matthew Smith. You parents when in the house might call you Matty. But to outside world you are known as Smith cause you come from the Smith household.

NAT is used for having multiple computers share the same connection and was a way to save on IP address space when we were running out. It's similar to an apartment building. You have 20 apartments(computers) in that building (router). But when that apartment gets mail, it all comes to one address (your external address). You apartment number identifies you within the building (internal IP address)That's the easiest way to explain NAT without getting into how the router knows which computer.
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post #47 of 56
As I know bugger-all about networking I'm probably just gonna sound really stupid, but..... can't he just use a proxy service?

If it's just an IP ban, I mean.
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post #48 of 56
Depends what kind of router you have.

Usually there should be an option to clone the mac address and that should do the trick. If your router does not have that option, you might be able to have your ISP assign you a new IP address by simply releasing/renewing.

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post #49 of 56
Quote:
Originally Posted by Xvengence View Post

Depends what kind of router you have.
Usually there should be an option to clone the mac address and that should do the trick. If your router does not have that option, you might be able to have your ISP assign you a new IP address by simply releasing/renewing.

this works...just clone mac address reboot both modem and router and it will assign a new ip...usually the release and renew won't get you a new ip...but it's worth a try if your not using a router

some router will also let you simply change the mac address..just change last to digits and reboot...i know it works because i just did it to make sure and it did indeed change my ip thumb.gif
Edited by mrinnocent - 2/2/12 at 8:24pm
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post #50 of 56
As long as you don't have a static IP address given to you from your ISP then you should have no trouble and all you need to do is restart the modem and you should be assigned a new IP. Simple as that.
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