Find mac address on python

Question

I have searched for an identifier and I tried to find mac address for any connected device on my server but the problem is that the output returns empty for example

a = os.popen("arp -a 192.168.6.150 | awk '{print $4}'").readlines()

a is empty

I'm working on captive portal page for untangle. I want to get the mac address from ip of device on network. This code runs on Apache server.

from mod_python import apache
from mod_python import util

possible duplicate of [Getting MAC Address](http://stackoverflow.com/questions/159137/getting-mac-address) — , Aug 26 '13 at 14:29
I think the OP wants to get the MAC address of any device in the network, given its IP address (not the MAC of the machine running the code) — Don, Aug 26 '13 at 15:26
The solution is here : http://stackoverflow.com/a/1750931/2615399 — Organ, Aug 26 '13 at 15:32
yes the IP in the same subnet, the problem is that all commands runs on terminal but not run on the page — Ahmed, Aug 27 '13 at 11:23
There are many helpful answers here! [How can I get the IP address of eth0 in Python?](https://stackoverflow.com/q/24196932/3904031) — uhoh, Apr 11 '18 at 22:08

score 4 · Answer 1 · answered Aug 26 '13 at 15:23

4

The following function returns the mac or None if mac is not found.

import commands
def getmac(iface):
    mac = commands.getoutput("ifconfig " + iface + "| grep HWaddr | awk '{ print $5 }'")
    if len(mac)==17:
        return mac

getmac('eth0')

answered Aug 26 '13 at 15:23

Simon Sagi

494
2
6

score 1 · Answer 2 · edited Jun 27 '17 at 08:26

1

import re, uuid


print (' : '.join(re.findall('..', '%012x' % uuid.getnode())))

edited Jun 27 '17 at 08:26

Bugs

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answered Jun 27 '17 at 08:25

The original problem is that the code doesn't run when requested from a webpage. It has little to do with the parsing method. – Jun 27 '17 at 12:05

score 0 · Answer 3 · answered Jan 23 '19 at 10:07

You can also use python scapy module for the same

from scapy.all import *
def get_mac(ip_address):
    responses,unanswered = srp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(pdst=ip_address),timeout=2,retry=10)
# return the MAC address from a response
    for s,r in responses:
        return r[Ether].src
    return None
get_mac("192.168.31.14")

Find mac address on python

3 Answers3