Connecting via MAC address?

Guys,
For some strange reason, one of our suppliers needs to install a device (Nortel Meridian media card) which cannot have an IP address configured on it.
The supplier engineer swears blind that on other sites, he can connect to this device just by using MAC address.
Is there a way to communicate with this device just using destination MAC address? I have scoured the internet with no luck so far.
We have Catalyst 4507Rs with 12.2.20 IOS.
Any help greatly appreciated.

Hi,
If it cannot be configured with an IP address, what network layer protocol does it use, if any? You can certainly communicate with it, assuming that the application being used to communicate with this device uses the same upper layer protocols. As long as the ethernet headers are compliant, the switches will forward them based on what is in the mac-address-table.
HTH,
Bobby
*Please rate helpful posts.

Similar Messages

Wireless connects via MAC address, but not with essid.

I have an eee 901 using the zeneee901 kernel. I got wireless to work out of the box to an extent. This will probably be easier to exlain just posting the commands.
ifconfig ra0 up
iwlist ra0 scan
iwconfig ra0 essid *essid here*
dhcpcd ra0
TIMEOUT GOES HERE
iwconfig ra0 ap MACADDRESS
dhcpcd ra0
Connected!
This wouldn't be so bad except I can'tuse Wicd. This was happening way before I installed Wicd btw.
What's the deal?

R00KIE wrote:The way you do it I don't know, but in wicd you can select an option to associate by essid instead of mac address and it works fine for me.
Someone else might be able to answer your question. Maybe you can consider using another network connection manager, would makes things easier. Although knowing why it doesn't work is also good
That's good, but I can't find that option. Where is it?

Restricting access via MAC address?

Hello,
Could someone please tell me how to restrict access to my wireless network (and internet sharing) by only allowing computers with a certain MAC address to join?
I'm kinda stumbling around here
Thanks,
Jonny

Sorry if I wasn't being specific enough...
I have my eMac set up as a Software Base Station, which streams internet & Airtunes to an Airport Express. I have it set up this way, because my ADSL modem is connected via USB (so it's a bit of a workaround). As a result, I have Internet Sharing switched on, so I can access it from all my other macs.
What I want to do is to stop other people from accessing my eMac's internet connection. If I set up a WEP password for Internet Sharing, I lose my Airtunes facility... so I was thinking another way might be to restrict access to the connection via MAC address. I only want my other airport card-equipped macs to access the internet connection and network generally.
Surely it's possible?

DHCP via Mac Address

I have a Cisco 831 router. I am handing out DHCP to my network via the router
ip dhcp pool HmPrivate
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 192.168.1.20
domain-name hmprivate.net
What I am trying to do is assign the same ip address to my laptop via DHCP by associating the mac address of the laptop to the DHCP ip address. This is easily done on a windows server.
I have not been able to figure it out on this router though. I have looked at the commands under the pool as well as in config mode. Nothing is jumping out at me.
Any assistance is greatly appreaciated!

Ok I powered up my laptop got an ip address from the rtr of 192.168.1.21. On the router i did a sh arp to get my hardware address of 0015.0025.60aa. I then created the new DHCP pool for the static entry. From my windows laptop i do an ipconfig / release then a ipconfig / renew. I keep getting the 192.168.1.21 address and not the 192.168.1.13 address that I want.
Am I missing something really simple here? Why wont the laptop grab the 192.168.1.13 address?
ip dhcp pool HmLaptop
host 192.168.1.13 255.255.255.0
hardware-address 0100.1500.2560.aa
default-router 192.168.1.1
dns-server 192.168.1.20
client-name dhopewell2
Here is a list of all DHCP pools on my router.
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.1.1 192.168.1.10
ip dhcp excluded-address 192.168.1.250 192.168.1.254
ip dhcp excluded-address 192.168.50.1 192.168.50.100
ip dhcp excluded-address 192.168.24.1 192.168.24.100
ip dhcp pool HmPrivate
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 192.168.1.20
ip dhcp pool HmWK
network 192.168.24.0 255.255.255.0
default-router 192.168.24.1
dns-server 10.0.101.12 10.0.101.13
option 150 ip 10.200.1.50 10.200.1.51
ip dhcp pool vlan10
network 192.168.50.0 255.255.255.0
default-router 192.168.1.1
dns-server 192.168.50.20
ip dhcp pool HmLaptop
host 192.168.1.13 255.255.255.0
hardware-address 0100.1500.2560.aa
default-router 192.168.1.1
dns-server 192.168.1.20
client-name dhopewell2

Isight connect via ip address

I just bought an imac (first time mac user) and i would like to use the isight camera to connect to my parents (who are deaf) video phone via ip address. Can this be done? I don't see a way to do it with ichat is there another application that i can use?

Welcome to Apple Discussions, jonesyusa
You are right that iChat will NOT connect directly to your parents' video phone.
If your parents use some kind of Sorenson video phone, try the suggestions that
helped user BroadwayBound96 at this post:
http://discussions.apple.com/thread.jspa?messageID=4876286&#4876286
If your parent's video phone is by another vendor, substitute that vendor's name and contact info in the suggestions offered in the above link.
The only other difference is that iChat System Requirements for the new Leopard version of iChat (iChat 4) is shown in this Apple knowledge-base article.
EZ Jim
PowerBook 1.67 GHz w/Mac OS X (10.4.11) G5 DP 1.8 w/Mac OS X (10.5.2) External iSight

VCN only while connected via internet address?

I have scoured all the posts here, and searched every phrase I could think of, and read the manual to find the information I am seeking, but I cannot seem to find an answer. I have found similar posts/complaints but no solutions.
I have ARD 3 on my MacBook Pro, and I use it from my office to assist my wife, who works at home, and my mother, who lives in Canada.
My wife's PowerBook is correctly configured in the System Preferences > Sharing > Services pane. She is on a fixed 10.x.x.x IP address behind and Apple Airport Extreme, with ports 8283 and 5900 forwarded correctly to her machine.
My mother has a cable modem (COGECO cable, Canada), fixed IP address, an NO router.
In both cases, firewalls are disabled on their machines.
In ARD, I can see both machines by their DNS names in the list. Status says "offline", but if I open either of them, I see their screens and am able to rudimentarily control both machines. What I cannot do is any of the other Management tasks, like System Reports, client Upgrades, etc.
Is there something inherent in ARD 3 that forces machines connected over the Internt (vs. LAN) to only be controllable in VNC mode? Or am I missing something here?
One question: in the client computers, should the System Preferences > Sharing > Services > ARD > VNC viewers may control screen with password, be checked or unchecked, and does it matter if I am logging into the machines via an admin account I created on both?
Thanks in advance for any useful tips!

Kevin,
it appears to me ... though I am a *total amateur* and only know what I've gleaned from these boards and the net in order to setup ARD for myself ... that for those using Airport networks (lots of us) it is necessary to manually open ports 3283, 5900 in the Sharing preferences under Firewall. If not, the traffic doesn't pass ... even on a LAN. So, you need to add a New configuration in the Firewall tab. (IOW it is NOT enough to simply select ARD in the "Services" tab).
This appears to me to be the problem with VNC over the net ... although I'm not sure that it's a problem really.
I have ARD 3 internet connections working on 3 locations. All of them behind Airport networks. When connected, "VNC On" appears under the "Current Status" tab in ARD 3.
I'm not sure if I'm connecting via VNC or not. I say this because, VNC has only been initiated remotely via "Change Client Settings" in the Manage Menu. It has NOT been set in the Sharing preferences on the client Mac. So ... is it ON or not??
Or ... am I getting a VNC connection because port 5900 is available and necessary due to it having been opened to accomodate the Airport network ? IOW ... is ARD 3 simply taking the route of least resistance ?
My own questions at this point are ...
1/ Does it matter ?
2/ Is VNC, in my case, less secure than a 'direct' ARD connection?
3/ Is VNC faster or slower than a 'direct' ARD commection?
4/ Are there things that I CANNOT do with VNC that I can do with a 'direct' ARD connection?
5/ Would Ports 22 and 5988 help? (I've seen these mentioned in archived threads).
Grant
(P.S. ... many thanks to those who contribute on this board. I know how frustrating it is trying to communicate this sort of thing to the uninitiated).
AluBook 17

Access Connection - Prefer MAC address problem

Hey
My specifications:
Windows Vista
Access Connection v5.31
After updating access connection I'm not able to prefer MAC addresses for my profiles anymore.
Edit profile> Wireless settings> Advanced configuration (settings)>
Preferred access point MAC address.-
This box is grayed out and you're not able to write in the box anymore.
Am I doing something wrong or is this feature just disabled for this version?
Also I remember having seen an old version being able to prefer 5 MAC addresses for one profile
Thank you!
/ jerian

Welcome to the Apple discussions.
Is the mac address you're using the one you see when you click on the blue apple, about this mac, more info, network, and scroll down to the mac address? Is it possible there's a mixup between the letter O and zero when entering the mac address?

How to find which port on the switch that it connected with Mac address?

Hi,
I am trying to find which port of the switches it connected to thru mac-address?
I am able to get the mac-address from the ip address when i do
"show ip dhcp binding snooping" at the core switch.
But when I move on to the Edge switch to check which PC with this Mac address connected to the port,i returned with no result.(onli trunk port result)
I use sh ip arp | inc 000d.60cb.445d
but didn't give me which port it connected to.
How to solve this problem?
thanks!
KL

Hi KL,
If you are already on the edge switch you can run a command "sh mac-address-table address " and it will give you the port number.
Incase you get a port which is a trunk port that means the end device does not exist on this switch and exist on some downstream switch. So you can just find out the ip address of the downstream switch with "sh cdp neigh detail" command and connect to that downstream switch and then again issue the command "sh mac-address-table address " and check the port number and follow the above steps till the time you get the switch on whcih end host is connected.
HTH, if yes please rate the post.
Ankur

How to look up a wireless client via MAC address

One of my AirPort Expresses shows a wireless client whose MAC address I don't recognize. Is there some utility that will show me info (manufacturer, etc) of a wireless MAC address?
Also, under what conditions would one choose to set up the Wireless Mode of an AirPort Express (Extreme) to "Extend a wireless network" and when would you choose "Participate in a WDS network"? The help files don't explain this stuff very well.

If the "g" Express is set to "join", it does not extend the wireless signal, it receives the wireless signal as if it were a computer. The idea behind "join" was to provide a means for users to stream AirTunes to a remote location with an amplifier and speakers.
If you are not using it to stream AirTunes, there's really no reason to have it powered on. As you have probably discovered, the ethernet port on the "g" Express is not active.
You'll need to recheck some settings on your main base station, the Extreme to make sure that it is setup correctly. Open AirPort Utility, click Manual Setup and click the Wireless tab below the icons. Just make sure that there is a check mark next to "Allow this network to be extended". Update to save any changes.
The "n" Express should be configured using AirPort Utility, Manual Setup, Wireless tab. Check that your Wireless Mode is "extend a wireless network" and make sure there is a check mark next to "allow wireless clients".
As you have discovered, the ethernet port is also active on the "n" Express when you have it set to "extend" and it will also stream AirTunes. Great features on the "n" Express.
You might think about adding another "n" Express to extend to another area.
Ethernet is always the best choice for speed and stability if you are able to hide the wire through the house. If it's not feasible to run an ethernet cable, take a look at ethernet powerline adapters.
You would use a pair, one device at the Extreme end and one at the other end where you want the signal to go. These devices use the home wiring to transport an ethernet signal and they work very well. Not quite as good as straight ethernet, but close and far better than wireless overall.
I bought a pair from DirecTV to setup the On Demand service because I didn't want to crawl through a hot attic to run an ethernet cable from my office router to the DVR. Much faster than wireless...and I previously had a very good wireless connection between my Time Capsule and the Express I was using to extend.
Hope you get things figured out soon.

Filtering and Monitoring via Mac-Address

Hi everyone.
Is it possible to filter and monitor a user's device via it's mac-add?
For example, I want to filter facebook and youtube in our company. I also want to have a status report regarding which mac-addresses are attempting to go into the sites that I have blocked.
Is this feasible?
Thanks in advance.

A lot depends on what systems you have and are using; but generally not directly (assuming basic systems and tools). You'd have to correlate logs and arp tables etc.
Advanced solutions such as ISE can do this but that's a much bigger discussion.

Restrict printing via MAC address

I am currently using Mac OS 10.2 server and now we are considering upgrading to 10.4 because of better printer servers. We don't current use the server software for printer serves. We would like to have the ability to restrict printing to the printer via the computers MAC address. Is this possible via server 10.4?
Thanks in advance
Jason
PowerG4 dual G4 - 400mhz Mac OS X (10.2.x) OS 10.2 server

You could use the firewall to block certain IP addresses from printing.
You can ensure certain computers receive consistent IP adddresses via DHCP using Server Admin > DHCP > Settings > Static Maps which depends on MAC addresses.
hth,
b.

How to assign static ip via mac address on LINKSYS WRT54G2

? how do i assign an ip per mac address with this router? i can't seem to find the option and its becoming a real pain
on my buffalo router i can paste a mac address and assign and ip for each mac on my network

The feature that you are looking for is called "DHCP reservation". This feature is not available on the WRT54G2. Several of the newer Linksys wireless n routers support this feature.
You can assign your computer a fixed (static) LAN IP address, however, you will need to do it manually. Linksys has some very specific rules about assigning fixed LAN IP addresses. Be sure to follow them carefully.
Rules for using fixed LAN IP addresses on Linksys routers:
With Linksys routers, a fixed (static) LAN IP addresses must be assigned in the device that is using the address. So you need to enter the fixed address in the computer or printer, not in the router.
When using a Linksys router, any fixed LAN IP address must be outside the DHCP server range (typically 192.168.1.100 thru 192.168.1.149), and it cannot end in 0, 1, or 255.
Therefore any fixed LAN IP address would normally need to be in the range of
192.168.1.2 thru 192.168.1.99 or
192.168.1.150 thru 192.168.1.254
assuming you are still using the default DHCP server range.
Also, in the computer, when you set up a static LAN IP address, you would need to set the "Subnet mask" to 255.255.255.0 and the "Default Gateway" to 192.168.1.1 and "DNS server" to 192.168.1.1
It is also important that no two devices on your network be set to the same static LAN IP address.

Despite active MAC address filtering turned on, computers still connect!

I am noticing a very strange problem that I was hoping v5.7 would fix but it hasn't. I have MAC address filtering turned on, as I have a number of MAC addresses listed in my access control tab.
Despite this, macs and pc's are able to connect wirelessly to my Base Station without being listed. Has anyone else noticed this major flaw?
I used WPA2 for a bit, but it must have slowed my network down by 40% so I would certainly prefer to use MAC address filtering instead.
Perhaps I am doing something incorrectly?
Thanks in advance,
Scott
Macbook Pro 2.0ghz Mac OS X (10.4.6)

scotteeboy, Welcome to the discussion area!
I don't know why they were still able to connect but MAC address filtering is not a real security measure since it is easily defeated.
WPA2 shouldn't cut your bandwidth 40%. Did you try WPA? That is also very secure.

MAC address and hostname

i got a sun ultra 10 and i am getting idprom contents invalid on bootup, but i get it to bootup. The machine does get an ip address from dhcp but will not connect, the mac address is showing fe:ef:ab:ef:ff:ee (which i am assuming is default, or wrong cause of the idprom). the host name is also showing afefeffd, which is also probably wrong, the mac on the case shows it should be 8:0:20:cf:77:df and the host should be 80cf77df
do i need a new nvram to get this to work?

chill dude being rude isnt going to make people help you...
anywyas... you need the host name and password for your schools network
the touch doesnt have its own
you should be able to connect to it by just going to wifi settings on the touch and then it should pop up when ur in school

DHCP to send different Gateways based on MAC-Addresses

Hello,
I would like to use the built-in DHCP server to send out different Gateways based on the clients' MAC-Addresses.
I have already managed to assign "static" IP-Adresses using the DHCP server to specific MAC-Adresses.
Is this possible or do I need additional software ?
thanks for your help

The basic IP networking construct here is the IP subnet (and the subnet mask); that's how you set up groups of related network hosts in an IP network. Hosts within a subnet tend to have the same DNS and gateway router and related pieces configured, and one DHCP server and such. (That's not strictly necessary, but...)
Launch Server Admin, select the DHCP service, set up subnets via the DHCP service by subnet mask, and establish DNS and default router settings there for each of the subnets.
Then set up static maps for the MAC address(es) associated with the hosts, and drop the static IP addresses into the particular subnet you want the host associated with.
You will want to leave room in the subnet for both the DHCP allocations (if any) and for the static hosts mapped into the subnet via MAC address.
There well may be a better way here, but this will get you where you want. (And the Network Services Administration manual - which you'll need to read - does seem a bit confusing around this particular sequence.)
nb: I don't have a "scratch" Leopard Server configuration handy to test and confirm this sequence.
nb: Xserve boxes require a little extra thought, given each Xserve box tends to have four MAC addresses.

Connecting via MAC address?

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