Obtain MAC address!!!

Hi!
I am accessing one of the instrument through LAN. I have defined it's IP address manually so I can access it. But I want to change it's IP address though LAN. I think if I get the MAC address of the instrument without giving IP address so I can do it. I have VI which gives MAC address when input IP address. I don't wanna give IP address. I wanna find instrument from MAC address on LAN.

LabVIEW does not have lowlevel access to network functions.
You could use system exec to do a ping sweep of the subnet followed by an arp table listing (arp -a), then parse the resulting output.
If the device supports it, you can then change its IP remotely address via arp -s.
Still, I don't quite see the need for all that. Can you explain why you need this?
LabVIEW Champion . Do more with less code and in less time .

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Obtaining MAC address in C program

Hello there,
I wish to obtain the MAC address of the primary ethernet card on a Solaris OS via C. This program is invoked many times/second so calling an external program is not really suitable.
The MAC address is being obtained for the purpose of providing a low-level software lock/key system (low level meaning I am aware it's relatively trivial to circumvent).
Paul.

Hello again.
I found out that the SIOCGARP ioctl will get the ARP entry of a certain IP address in the ethernet. Root access is not required.
The following program will print the ethernet MAC addresses of all IP networks (including dial-up and 127.0.0.1).
For Dial-up and 127.0.0.1 "No ethernet address" will be reported. If you have multiple network cards it may be a problem to find out the MAC address of the main board.
On my Blade-1000 the following output is produced:
lo0: 127.0.0.1 - No ethernet address.
eri0: 192.168.178.18 - 08:00:20:FB:2F:78Here is the program:
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <arpa/inet.h>
main(int argc,char *argv)
    unsigned char eth_addr[6];
    int i,j,sock;
    unsigned char *p;
    struct lifconf lic;
    struct lifreq lifrs[30];
    struct lifnum num;
    struct arpreq ar;
    struct sockaddr_in *soap,*soap2;
    /* Enumerate all IP addresses of the system */
    sock=socket(PF_INET,SOCK_DGRAM,IPPROTO_IP);
    num.lifn_family=AF_INET;
    num.lifn_flags=0;
    ioctl(sock,SIOCGLIFNUM,&num);
    lic.lifc_family=AF_INET;
    lic.lifc_flags=0;
    lic.lifc_len=sizeof(lifrs);
    lic.lifc_buf=(caddr_t)&(lifrs[0] );
    ioctl(sock,SIOCGLIFCONF,&lic);
    /* Get the ethernet address for each of them */
    for(i=0;i<num.lifn_count;i++)
        /* Get IP address */
        ioctl(sock,SIOCGLIFADDR,&(lifrs[ i ]));
        soap=(struct sockaddr_in *)&(lifrs[ i ].lifr_addr);
        soap2=(struct sockaddr_in *)&(ar.arp_pa);
        *soap2=*soap;
        /* Print IP address */
        p=(unsigned char *)&(soap->sin_addr);
        printf("%s: %u.%u.%u.%u - ",lifrs[ i ].lifr_name,
            p[0],p[1],p[2],p[3]);
        /* Get ethernet address */
        if(ioctl(sock,SIOCGARP,&ar)<0)
            printf("No ethernet address.\n");
        else
            p=(unsigned char *)&(ar.arp_ha.sa_data);
            printf("%02X:%02X:%02X:%02X:%02X:%02X\n",
                p[0],p[1],p[2],p[3],p[4],p[5]);
    close(sock);
}Martin

Obtain MAC Address from 250 iPads

Hi all,
I have taken delivery of 250 iPads which I am configuring with OSX Server on a MAC Mini. So far, so good!
Our wireless network uses MAC Address authentication so I have to add each MAC Address to our Cisco Wireless controller.
Without having to go to Settings > General > About and write down the MAC Address from every device, is there a way to obtain the MAC Address from either the box using the barcode, or maybe an App that loads up on screen and shows the MAC Address of the device in a barcode format that I can then quickly scan into an Excel spreadsheet and import?
I feel that i'm about to waste a lot of time going on to each iPad and obtaining the MAC Address
Thanks in advance
Regards
Jim

If you have the ability to plug them into Apple Configurator, you can connect them with a USB hub and update and supervise them. This will let you export MAC Addresses and Serial numbers from Configurator to a CSV file that you can use to upload to your wireless controller. If you need to, be sure to Unsupervise the iPads when you are done.
The info you're looking for may also be available through GSX, but I'm not familiar with everything you can use it for on your end.

Obtaining MAC addresses of machines on local network

Hello, I have written a small network management program in Java (used to remotely turn our machines on and off)
Off via starting an external program (beyondexecv2), and on via creaing the Wake On Lan magic packet.
Currently it looks up the MAC addresses in a textfile of mahinenames->mac address.
I'd like to be able to scan the network and automatically pick up the MAC addresses of any machine that is currently on.
I have seen other network scan programs that do this, is it possible in Java?
Yours
PPage

Thanks Omkara,
Thats nearly the way I've decided to do it (after finding similar on another thread)
Basically need to itterate through my list of machine names (or get them from a standard scan of the IP range), and for each run the ping command on the ip/machinename, then immidiatly run the arp -a command and parse its output looking for the IP address of the machine, and that will give its corrosponding MAC address.
Problem sorted.
Cheers for the help though.

I have a Mac Pro using OSX 10.7.4. When using apple mail I click on the address icon to obtain email address and nothing happens. I've restarted both the application and the Mac but still won't open address book. Any ideas please.

I have a Mac Pro using OSX 10.7.4. When using apple mail I click on the address icon to obtain email address and nothing happens. I've restarted both the application and the Mac but still won't open address book. Any ideas please.

Assuming you have these accounts set up in Mail, open preferences and under Accounts tab, edit the SMTP outgoing server list. Do you have a .mac address in the list? If so, delete it.
Are you using iCloud?
For the troubled account, select the correct SMTP server for that account in the box and check the box to use only that server with that account.

Obtain IP address from Mac address

Hi all,
Is ARD capable of obtaining IP addresses from mac addresses?
Please advise.

ARD's System Overview can display IP addresses and MAC addresses for computers it manages. If you're asking whether ARD can scan a network for a particular MAC address and return the IP address for a computer that's not in ARD's list of managed computers, then no, it can't (at least not by any method I know of). ARD is really not a network scanning/management application; it's for managing Mac workstations.
Message was edited by: Dave Sawyer

Obtaining client's MAC address

Is it possible to obtain the MAC address of a client connecting to my server socket?

hi,
well i figured out how to get the MAC address in Win 9x and Win NT 4.0, well i could not figure out the c/c++ api for doing a JNI call, but the next best thing is to run the native utilities and then get them to write to a output file,.. so for eg, you create a batch file like this
runwin9x.bat
@echo off
winipcfg /all /batch mac.txt
you then then use the Runtime.exec to get to run this batch file, it will create a file by name mac.txt , you then parse this file for the line containing the literal stirng "Physical address", A typical line looks like this..
Physical Address.........: 00....
if the number starts with a 44 instead, then it is the PPP Dial up adapter address, so just parse for the Line which contains the String physical address but does not contain the number starting with 44-...
For winNt you can use the winmsd.exe to get it to write to a file..
for eg
runwint.bat
@echo off
winmsd /s/f
now the gotcha is that this creates a file with the machine name.. in the format machinename.txt..., you then parse this file for a line containing the String
"Transport.."..
well what you could do, is first figure out the OS by doing a System.getProperty("os.name") , then call the respective batch file [using Runtime.exec], parse the batch file outputs depending on the OS and then get the MAC address... and after getting the address, just delete the output file resulting from running the batch file...
I dont know the c/c++ call for this.. i someone could point out which library to use, it would be useful..
cheerz
ynkrish

Ethernet MAC address has changed and I can no longer connect to the network

I have a new iMac, 21.5" running 10.6.4. It was purchased in the past month.
I am using it on an ethernet network and using DHCP to obtain the address. It has been working for the past few weeks. I turned it on today and it is failing to connect. After some digging around, it seems that the MAC address (Ethernet ID) has been reset to 00:10:18:00:00:00. This is different to the one it has been using last week.
I have not changed any network settings. Airport is working fine.
If I pull out the ethernet cable and reinsert, the machine tries to obtain an IP address. After a while, it returns with a self-assigned IP Address.
Last week, I did notice that it was taking a relatively long time (a minute or so) to obtain the IP address over ethernet. Plugging the same ethernet cable in a macbook, I am able to obtain the IP address for the macbook much more quickly.
I see that I could use ipconfig to change the interface address to what I believe is the correct address. Would this be sensible?
Why would the machine have reset the MAC address anyway?
Regards,
Neil

Dear all,
I am having the same problem with a new MacBook Pro, bought end of October - for me it became apparent for software (Matlab, Comsol) that are registered with a licence file which was created based on the MAC address, and also when trying to register the computer to the company network. That software will only work those times that the computer "knows" its real MAC. Also, I found that audible audio books, managed through itunes, will not synchronize with the ipod at those times when the MAC address is at the producer's default (00:10:15:00:00). I never had network issues other than this computer registration, - no probs at home or elsewhere - , so it will depend on the individual setup which issue users observe.
I have had long phone discussions with different Apple support people, they have done checks based on Capture Data that I sent to them via email, etc.. They can't find the problem in the software/setup and they advised me to go the Genius Bar and have those guys look at the computer's guts.
Restarting sometimes did set the MAC to the real one, also running the code that someone suggested in Terminal sometimes helped.
Other than that, looking through the web, it does not seem to be an Apple-unique problem, but certainly one would like to see support to take care of that issue for Macs soon.
Also, thanks a lot for this thread! Otherwise the support guys on the phone would not have believed my : "the Mac address changes on a daily basis" and would just have brushed me off.
All the best,
Susanne
Message was edited by: semperula

Request for info regarding MAC address population in computer objects

Hi,
I am trying to determine how MAC address information is populated in computer objects. I had assumed initially that the hardware scan would be used, but observation shows this information
to be obtained prior to any hardware inventory.
I have laptops that are primarily connected via VPN, and before long their objects lose the internal network interface's MAC address. When I try to rebuild them, they fail to PXE boot. I have
found that importing a CSV of host / MAC / SMBIOD GUID will update the object (rather than having to delete and recreate it) which works temporarily. The MAC will eventually disappear, and the device fail to PXE boot.
I have thousands of these devices to manage, and it is already difficult enough having a CAS and two primaries (the windows Deployment Service on a DP only cares about devices in the DPs primary
site, and so devices that move site are a real pain already, try finding that anywhere in the OSD reference documents!)
I'm assuming now that this information is pulled from the actual client-server connection, and therefore is dynamic(ish), like IP information. If this is the case, more detail around that process,
where to find evidence of that process occurring would be very useful.

The MAC is updated by hardware inventory and heartbeat discovery.
Torsten Meringer | http://www.mssccmfaq.de

What is my iPad's MAC Address?

My household network only allows known (registered) MAC addresses to transceive through the wireless router. How do I obtain the MAC address for my new iPad so that I can enter it into the router's table of allowed devices? Why wasn't the MAC address displayed prominently in the documentation?

I would imagine (since I don't have one) that it is located in the same area as the iPhone. Go to settings>about>look at the WiFi address. That is the MAC address.

Getting Mac address

hi all
is there any way to get the mac address of Network Interface Card. i need it in my form application
thanks

Hi,
not from Forms directly and I doubt you can do this from Java. If so, you could use the Java Importer to obtain this information. Otherwise you can call out to C as well from Forms.
Frank

Why does my AE gen 2 crash when I put my iPhone MAC address in?

AE gen 2 with Time Capsule.
I use MAC address for security (I think that is OK). I have a number of items that need WIFI and their specific MAC addresses are put into the box. All OK so far! Recently my wife and I have purchased iPhone which I also want to have access to WIFI from AE. In goes WIFI address for both phones and it will not restart after 'UPDATE' command given.
Push the reset button while it is plugged in and it comes back minus the MAC addresses specific to the iPhone!!!!!
Any ideas? Could it need replacing?
I tried going to WPA2 Personal but my wifes laptop kept coming back with "Connection Timed Out".
Have done HARD reset (Reset button with power cord out then insert while keeping reset button pushed) and no difference.
Any help would be very much appreciated.
Thx
David

Both our laptops are MacBook Pros.
Then they both really shouldn't have any issues connecting to a wireless network configured to use WPA2 Personal which uses the AES/CCMP encryption protocol. Currently the strongest security type available for consumer wireless networking.
I was under the impression MAC addresses were pretty secure.
Although MAC addresses are unique, as I have mentioned they can be spoofed. So a wireless client, using a spoofed MAC address, can easily bypass any security method that relies on these addresses. The other security failacy is closing or disabling the broadcast of the wireless network name. This may thwart the most casual network leech, but like MAC addresses, the network name (or SSID) can still be found using utilities easily obtained from the Internet.

Base Radio Mac and SSID MAC addresses

I am looking for a way to obtain the SSID mac addresses from a report or other method. We have clients attaching to an SSID that show a MAC address that I am positive is the MAC of the SSID (based off the physical MAC of the Radio) but I cannot find it either in reports in WCS or on the controller.
Thanks!

try the following command via the CLI
show dot11 bssid
Examples
This example shows how to display a list of BSSIDs and SSIDs:
AP# show dot11 bssid
This example shows the command output:
AP1230#show dot11 bssid
Interface BSSID Guest SSID
Dot11Radio1 0011.2161.b7c0 Yes tsunami
Dot11Radio0 0005.9a3e.7c0f Yes WPA2-TLS-g
from this doc
http://www.cisco.com/en/US/docs/wireless/access_point/12.3_4_JA/command/reference/cr34main.html#wp2701427
let me know if this helps
Bill

T61s, T60s & older model unable to PXE boot to SCCM (MAC address problem)

Hi,
We have a series of T60, T61 & older machines that are unable to PXE boot to SCCM. The T400 & X series & other newer models can boot just fine.
After checking further, we realised that only a certain range of MAC addresses are unable to pxe boot i.e
00-1A-XXXXXXX
00-1C-XXXXXXX
range.. all the other range of MAC addresses are fine to boot via network.
The error when doing network boot is "bad or missing discovery server list"
Also, we are running on SCCM 2012 at the moment. Our branch office who is running SCCM 2008 can have all the machines - regardless of models & brand boot just fine.
Any ideas? Much appreciated.

did it obtain IP address from DHCP server? is DNS server address is configured in DHCP scope? can you ping using IP address?
if drivers are proper will suggest to update it in boot media & enable command line support to make it easy for deployment & troubleshooting.
Prashant Patil

MAC Address on AirPort Express

How do I discover what the MAC Address is on an AirPort Express?
I'm using AirPort Utility and it does not seem to display anything about the MAC address for these devices.
Ideas?
Thanks
-Mike

Hi Bob,
I'm using 6.2 (Build 620.33)
I'm wondering if this is the issue because it seems like I've been able to obtain the MAC addresses of all of my AirPort Expresses and even my Time Capsule in the past.
But now several versions of AirPort Utility updates later, I can't.

Obtain MAC address!!!

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