No option of cloning MAC address

I was about to order the 2TB Time Capsule when I did an internet research and found out that there is no way to clone the MAC address of my existing Netgear router to the Time Capsule.
Last time I requested a change from my ISP it took several phone calls and left me without internet access for a week. I'm not willing to go through this again.
That's bad - for me since I really wanted the Time Capsule; - and for Apple because I won't buy it.

It's really too bad the Airport and Time Capsule do not support changing the MAC address. Editing the MAC address is a technology (an officially sanctioned technology BTW) that's been around as long as Ethernet (and was present on Token Ring as well)
http://en.wikipedia.org/wiki/LocallyAdministeredAddress
Right now I have a bug where one of my computers keeps dropping its WiFi association, but there is a workaround to set the first byte of the MAC address to a nonzero value. (I've confirmed all my apple gear has zeroes as the first byte). I can change this on my Belkin N1, and on every other machine, Apple or not, that I own. But, I can't change the address on my Airports. Changing the MAC address is a legitimate part of the 802 specification and I wish it were supported on the Airports. I have a significant investment in them, this minor technical detail would be an unfortunate reason to not be able to use them as access points.

Similar Messages

Block cloned MAC address in WCS

Hi I would like to ask if I can block a user who connects to our network and generates high usage of internet.
The problem is every time he clones his MAC address.
PS ...( WITH OUT SETTING A PASSWORD ON THE APs AND WITH OUT SWITCHING THEM OFF)
THX

Chris
Only way to prevent it is to do exactly what you mentioned you don't want to do and that's set a password or eap security. Layer 2 hacks have been around for ages. Very hard to defend unless you lift security requirements.
Sent from Cisco Technical Support iPad App

How to find MAC address for WAN port for Airport Express 2nd Gen.

The New Airport Express has a LAN and a WAN ethernet ports. How can I find the MAC address for the WAN ethernet port as my Service Provider needs it for provisioning....I can fid MAC address for Ethernet and for two wireless 2.4 & 5GHz but not for WAN ethernet port using Airport Utility 6.1

Many thanks for the swift response. However, there is no WAN MAC address on the box or on the device anywhere. I even used magnifying glass to find one .
The airport utility shows only three mac addresses. One for 2.4GHz, one for 5GHz and one fo the ethernet (LAN port) whereas there is another ethernet port in the device mentioned as WAN port and I am still not able to find the MAC address for the WAN ehternet port for Airport Express (2nd Generation).
Will appreciate a response to make th device work wiht my service provider as providing them the WAN mac address is a must. Had there been an option for cloning mac address, the issue would have not been there.
Many thanks again - in advance.

3 computers 1 MAC address

ok, only 1 MAC is allowed on my home network however i had changed my MAC address on my ipod and macbook to be the requested address and everything was working perfectly (two computers with the same MAC browsing at the same time) then the airport was reset and now when any of the computers attempts to connect to the internet for the others it drops out. any ideas?
i have access to all computers but not the airport (unless someone tells me the terminal command i read of somewhere) thanks in advance

Why don't you disable the ACL (access control list) rather than messing around with cloning MAC addresses? As you have noticed, cloning MAC address is rather easy, so ACL won't deter someone who's trying to gain access to your wireless network.

Can't clear mac address table from interface

hello all.
I'm facing a problem, and i've also tried to workaround but not sucessfully.
I've got a polycom phone on the swich. When I connect a laptop on that port, the mac address is learned by the switch and keep the mac address even if I disconnect the ethernet cable from that port and if I try to connect the same laptop on other port on the same switch I've got errdisable error in the last connected port. Although I was figuring out what's wrong and seems that the mac address is kept for some reason in the first port.
sw02#show mac address-table interface f0/19
Mac Address Table
Vlan Mac Address Type Ports
60 3c07.5417.9069 STATIC Fa0/19
80 0004.f21e.afa7 STATIC Fa0/19
this is a 2960, Version 12.2(44r)SE4
with a Polycom SoundPoint IP 330 connected on vlan 80
I was searching to clear the mac address table on that interface but the IOS version didn't give me the static option
sw02#clear mac address-table ?
dynamic dynamic entry type
move move keyword
notification Clear MAC notification Global Counters
As there's no dynamic entries on that interface the mac addresses remain on the f0/19 interface.
I've tried with other switches and with other laptops and is the same errdisable status.
sw02#show run int f0/19
interface FastEthernet0/19
description VoIP
switchport access vlan 60
switchport mode access
switchport nonegotiate
switchport voice vlan 80
switchport port-security maximum 5
switchport port-security
no snmp trap link-status
ip dhcp snooping limit rate 100
end
any thought?

the mac addresses are not manually configured.
yes, that's my point. when I disconnect the ethernet cable the mac addresses are not flushed from the mac table.
Although I don't understand why the mac addresses are kept in the interface, if I force the interface aging time to 1 min, the problem don't occur anymore.
I was reviewing the switch config and I've got ports with aging time 0 (that learn and flush the mac addresses dynamically) and I've got ports with aging time 1 (that learn and flush the mac addresses at the end of 60 seconds)
The problem is solved although I need to investigate this issue in other switch models and with other voip phones.
Tks Jon and Julio

Macchanger - option ending - mistake in new MAC address

Hi folk,
I use macchanger on my ethernet card to share my network.
My access point is by default associated to my ethernet IP.
To connect to this point more than one machine,
I cloned my terminal's MAC address into a router,
and spoof the terminal MAC to avoid conflict with the cloned MAC from the router.
It does work (If any better solution, I'm listening), but I have a tiny bug,
So, I do have an issue with the --ending option,
which keeps the card's brand prefix and alter only the end.
However, if it does the trick, it alters also the 2nd digit of the first set wrong,
changing it from 0 to 2:
# macchanger -s enp3s0
Current MAC: 02:24:ZZ:xx:xx:xx (unknown)
Permanent MAC: 00:24:ZZ:yy:yy:yy (Asustek Computer Inc.)
It have this behaviour since the beginning of my using of this option.
3.13.6-1-ARCH
macchanger v.1.6.0-2
lspci:
01:00.0 Network controller: Ralink corp. RT2790 Wireless 802.11n 1T/2R PCIe
03:00.0 Ethernet controller: Qualcomm Atheros AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0)

Hi, another similar bug on the same option, it does weird indeed.
My ethernet card is Asustek, and a Azurewave for the wireless.
Macchanger --ending seems to work *sometimes* on the wireless : it did change the MAC on it without bug just right now.
But it kept bugging before.
Does anybody else has the same issue ?
I look forward to report a bug

Back to 'mac address cloning'

My last 'mac address cloning' issue was solved, but now I have another. Before I had to reset my router to disable and reset everything and it worked. Now I have to enable 'mac address clone' to get my pc and server to let me connect to them (thru 'MSTSC') with my wireless laptop and then I have to disable it to get on the internet. Is there a way for the pc and server to be reset and start off fresh?
Solved!
Go to Solution.

This is very likely to be a name resolution issue. When you do not have the MAC address cloned and you ping dan-pc, do you get replies?
Unless you have either a WINS server set up on your network, or all of your PCs have static DHCP leases at the router, or you run your own internal DNS server, or you have LMHosts file entries for all of your internal machines, it is unlikely you wil be able to resolve the names of the PCs on your LAN.
The easiest way for you is probably to reference them by IP address. If you changed the port they are listening on so you can access them seperately from outside your network (when you are not home for instance) you should append that oport number to the IP address in the mstsc address entry block, ie 192.168.1.10:3389 for one and 192.168.1.11:3399 for the other (that is as an example...I don't really know the IPs or the ports you used....
Tomato 1.25vpn3.4 (SgtPepperKSU MOD) on a Buffalo WHR-HP-G54
D-Link DSM-320 (Wired)
Wii (Wireless) - PS3 (Wired), PSP (Wireless) - XBox360 (Wired)
SonyBDP-S360 (Wired)
Linksys NSLU2 Firmware Unslung 6.10 Beta unslung to a 2Gb thumb, w/1 Maxtor OneTouch III 200Gb
IOmega StorCenter ix2 1TB NAS
Linksys WVC54G w/FW V2.12EU
and assorted wired and wireless PCs and laptops

IPv4 reservations check all of Option 61, not just MAC address

I am trying to use Server 2012 R2 DHCP to assign IPv4 addresses in a mixed network.
Most systems send a very brief Client Identifier (Option 61) which includes only hardware type and MAC address. Some systems (most importantly Fedora 21 in my case) send more information including an IAID, DUID type, and time in addition to hardware
type and MAC address. MAC address still comes at the end of the option.
I am attempting to use reservations to assign addresses to workstations, but DHCP doesn't seem to know what to do with the extended options sent by Fedora 21; it checks all of the client identifier against the MAC address and then rejects the request because
the client identifier has additional information. Has anyone found a server setting to resolve this? Once a Fedora client is set up it can be configured to send only the MAC address and hardware type in Option 61, but I am looking for something
that will work with the default options. It seems odd to me that DHCP requires a MAC address to identify clients in a reservation, but compares the MAC address to all of the contents of Option 61.

Hi,
According to your description, my understanding is that DHCP server(Windows Server 2012) can’t reserve IP address to Fedora 21, due to extended options(61) sent by this client.
Windows DHCP server, reservation is based on MAC address. as you mentioned that DHCP server will check the message sent from the client, if the matched MAC address has been detected, reserved IP address will assign to the client.
As far as I know, there is no additional setting for Windows DHCP server to control the identifiable field of message sent from client.
Configure the Fedora client to send only the MAC address and hardware type in Option 61, could be a better way to resolve this problem.
Best Regards,
Eve Wang
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Advantage of cloning the MAC Address?

What's the advantage of cloning the MAC Address?
Solved!
Go to Solution.

There is no "advantage" of cloning the MAC address. The only advantage would be to have internet or not.
In many cases, it is absolutely unnecessary to use the MAC address clone.If you have a working internet connection through your router then there is no need to use the MAC address clone function.
Only when you find that you have a working internet connection on one computer directly on your modem but not when you connect through the router (or a different computer directly on the modem) then it is necessary to use the MAC address clone function.
This usually is only the case with cable TV ISPs. They only allow you to have a single active internet connection at any time. They do this by remembering the MAC address which connects through a specific modem. If you first connect a computer for tests directly to your modem you'll have an internet connection. Now if you connect a different device to your modem it doesn't it's because the ISP has still locked the internet connection for the MAC address of the first computer.
How to remove the lock depends on the ISP and the modem. Sometimes it's enough to reset the modem or to power down everything. Sometimes you have to power down everything for a few hours and after that the first connecting device is the one with the internet connection (i.e. make sure to connect the router then...) If you want to know exactly how your ISP does this you should ask them...
The simple workaround is to use the MAC address clone function. The router "clones" the MAC address of the first computer, i.e. it basically pretends to be that computer. The MAC address is accepted by the ISP and is immediately allowed to the network. You have a working internet connection either directly on the first computer or through the router because both use the same MAC address. (It's no problem on the router because the MAC address is used on the internet port only...).
Of course, you have to remember all this. If at some later time you connect a different computer directly to the modem (e.g. you have connection problems and you want to find out what's wrong) you may "lock" in a different MAC address for your connection and you'll have to wait again to regain the connection for a different device.
But again: there is absolutely no need to use the clone function if you have a working internet connection through your router.

Is the Gmail sync option in Mac Address Book bidirectional ?

Is the Gmail sync option in Mac Address Book bidirectional ?
basically, If I put information directly online on Gmail Address Book will the information go on my computer's Address Book ?
can anyone explain with his/her experience ?

SangomaDB wrote:
It is bidirectional, but I'm not sure how often the sync is triggered, or what triggers it. I saw some stuff on the web that talks about setting it up with Google Sync, but I have not really tried it.
*_Question on: Is it Bidirectional ?_*
How can you confirm it is bidirectional ? I have not seen a site that confirms that is it bidirectional.
*_Question on: How often the sync is triggered ?_*
ONLY when Google Sync is activated from Address Book, you will see a file created in ~/Library/LaunchAgents/com.google.GoogleContactSyncAgent.plist which contains the sync schedule, which by default is 3600seconds (an hour).
The user can change the sync schedule by editing that file using TextEdit.
*_Duplicates using Google sync with Address Book_* ?
I've noticed that my 2000 contacts where duplicated at least 3 times which then I had 5800 contacts about.
Is there any way to stop that ?

Mac address cloning / BT Home Hub 5

I have Infinity 2 package with BT Home Hub 5.
I recently bought Asus AC3200 and would like to use it as a main wired/wireless router in the house.
I don't want to have an extra routing hope, so I thought to setup Mac address cloning, so AC3200's broadband interface has the same MAC as BT Home Hub.
Is it possible ?
Where can I find MAC address of BT Home Hub 5 broadband interface ?

Are you trying to connect a 2nd router to the phone line at the same time? If so it won't work. If not why are u trying to clone the mac address? You can only have the same Mac address once within the same network. Arp cannot understand multiple devices with the same Mac address. You can only have a mac address known to one device. Multiple IP addresses can map to the same Mac address but you cannot map the same IP address to multiple Mac addresses.

MAC Address Cloning?

I am currently connected to my dorm room network with my AirPort Extreme successfully. However, when connecting for the first time, you are prompted to enter a username and password on a web page which authenticates your machine for the first time. The problem is, if I want to hook something else up wirelessly (Apple TV or PS3) I have to re-authenticate it using the web login, thus disconnecting my Mac from getting online.
I am thinking that I can probably authenticate my Mac, then clone my MAC address to the router, but am not really sure if that will work or how to go about it. Can someone please provide some insight on going about doing this? Thanks.

Does changing it to bridge mode give the same responce?
Using share ip would mean that only one of the uni's IP addresses would be associated with the airport base station. In bridge mode any device attaching would get a different uni IP address. This may allow multiple devices to attach, but without knowing the full set up, I can't really help any further.

Need to disable "Block Anonymous Internet Requests" with "Clone MAC address?"

Ok -- so I learned from tech support and this forum that the "Clone MAC address" option needs to be enabled when connecting to the Internet via a cable modem. In one of the forum posts (sorry lost track of which one), it said that in addition I need to disable "Block Anonymous Internet Requests" as well -- is this correct? If so what is the effect of this? Linksys documentation is not clear if this is absolutely necessary.
I think the comment is in this thread
http://forums.linksys.com/linksys/board/message?board.id=Wireless_Routers&message.id=8600

Usually resetting you cable modem will allow you to use a router without cloning the MAC address. Reset modem, power down, plug router into the modem, power up the modem, power up the router and you should be good to go. The popular reason that I know of for unchecking "Block Anonymous Internet Requests" is when you plan to use P2P software like Azureus. Your computer becomes pingable and can be seen on the net.

AEBS and Comcast (can I clone a MAC address?)

I am currently an Earthlink DSL subscriber. I love Earthink, but DSL is giving me all kinds of trouble. Covad owns the lines in my area and they are aweful... in any case...
I am going to switch to Comcast Cable Broadband. I have set up many people in the area with Comcast and a wireless router. It seems that Comcast does not do this everywhere, but in my area they "bind" to the MAC address of the NIC that you use to setup the connection (MAC Address Authentication).
If I want to use NAT on my router, it will not work unless I can spoof the MAC address. This is easily done with a Netgear or Linksys router. This does not seem to be a setting in the Airport Admin Utility.
Is there a hidden setting or a third party utility that I can use for spoofing the WAN MAC address on my Airport Extreme Base Station?
I could switch to a different wireless router or put a small router between my Cable modem and the AEBS, but I would rather not add a layer of hardware or switch hardware if I don't have to (I really like my AEBS).
Thanks for any advice.
WT

It should be possible, if manual registration of the MAC address of connected equipment is required on Comcast's service in your area, to get them to either clear the binding to allow a new device (ie the Base Station) to associate with the connection, or to ask them to manually register the MAC address of the Base Station's WAN port. I realize you would rather not have to deal with Comcast's tech support people, but (as pointed out above) the only other option is to use a different wireless router that does support MAC address cloning.

WRT600N weird MAC Address issue

I've had the Linksys WRT600N for several months. One day the internet connection stopped working, after I power cycled it, I called support and they had me change the router to clone MAC address after that it worked. If I took off the cloned MAC the internet wouldnt work. So I got curious after that and I restored the router the settings file I had backed up previously. I tried my internet connection and everything worked. No clone MAC address, however, after about a month it stopped again. The issue was making sure clone mac address was on. My question is why does that keep happening there shouldnt be a reason that it would need my computers mac if my isp doesnt need me to do thaa. (ISP = Optimium) Has anyone had this problem or know what the cause is?

You have to tell what you did exactly if it did not work.
Generally: many ISPs (most cable ISPs) only grant you a single public IP address, i.e. a single device connected to their service. Most do this by storing the MAC address of the device connected to the modem. If you connect a different device with a different MAC address into the modem they won't accept it. You won't get an IP address. You don't have internet. Only the device with the MAC address stored (or a modified MAC address set to the stored MAC address) will have internet.
Some ISPs reset the stored MAC address if you call them. With a few ISPs this is the only option.
Most ISPs reset the MAC address after a few hours of inactivity or in fixed intervals.
Some ISPs recognize if you reset the modem and reset the MAC address then.
After it is reset you can connect a different device and it will get the IP address.
Now, if your internet at some point does not work and for a test you connect the computer directly to the modem and you get internet then, at that moment you already have locked in MAC address of the computer and you have to use the MAC address clone on the router.
Thus, if you need the MAC address clone or not depends on what you did when exactly after how much time of inactivity when the internet did not work anymore.

No option of cloning MAC address

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