Searching For Networks On Mac

1. Mac Network Settings
2. Searching For Networks On Macbook
3. Network Mac Address
4. Searching For Networks On Mac Os

Unfortunately, Mac OS X's version of ping doesn't seem support the flag - it doesn't work if you try to use it, and it's not listed in the man page. Just as I was about to go find and build a new ping, a much more Unix savvy friend of mine offered this alternative: ping 192.168.1.255. Unless you have something like Cisco Network Assistant installed, you need to dig your way through to the switch where the host is connected. Let's say you are looking for MAC address ab12.cf34.aa21, on the router, issue the command: show mac address-table include ab12.cf34.aa21. The output will tell you the port of the connected device, e.g.

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The output of the ifconfig command in the terminal will tell you the
broadcast address to use for each interface. For example:
en1: flags=8863
mtu 1500
inet 10.50.6.8 netmask 0xffffff00 broadcast 10.50.6.255

once you've executed the xxx.xxx.xxx.255 broadcast ping, type 'arp -a' and it will
show you a list of known IPs and their associated ethernet mac address. match
the ethernet mac address to the label that is most likely attached to the back/
side/bottom of your device, and you're done.

or if you have a recent build of nmap installed, you can use the following to scan the whole subnet:

substitute your IP range and subnet, of course.

2 questions. What if the device doesn't respond to ping. I can't tell you how
many times I've seen that. Also, what if you have a device that was configured
with a static IP on another network and then brought to yours and you don't
know what it's set to. If you know the MAC address, can you find it on the
network and configure it that way?
Jeff

If it doesn't respond to ping, you can still find the address like so:

This will ping every address in your subnet (Adjust the local address as needed, and if your block is larger than a /24 you'll have to modify the script accordingly) and then show every machine that responded to the arp request. Even if it doesn't respond to a ping, it'll respond to the arp request. The ping is just used to generate the arp request.

Mac Network Settings

I've used this to locate APs that blocked pings by default.

Pardon my stupidity, but when I type that straight into terminal, I get '-bash:
255: No such file or directory' and when I put it in ultraping.sh and do a 'sh
ultraping.sh' I get 'ultraping.sh: line 2: 255: No such file or directory'. How do I
use your instructions and can I make it into a command line command script?
Thanks in advance.
Jeff

Whoops. I make a mistake in my original post.
x=0
while [ $x -lt 255 ]; do
ping -c 1 192.168.1.$x &
x=$(expr $x + 1)
done
# Wait a few seconds for the pings above to finish
arp -a
Hopefully that works for people where my original didn't. :)

Searching For Networks On Macbook

Ummm.. I have Mac OS X 10.4.6 running and I tried the command and it works,
but it keeps looping? I don't get it. Can anyone help?

pings will keep going until you end it with

Aah. Simple. Many thanks!

Network Mac Address

if you type a -c# flag after the ping command it will only report back once, as in:
ping -c2 192.168.1.255

..as said, ctrl + C or – in Apples Terminal – Command + '.'
---
this is not the sig you`re looking for.

If you want to learn a little more about what is going on you might want to read
this page:
http://www.comptechdoc.org/independent/networking/guide/netbroadcasting.html
Knowing EVERYTHING about IP addressing was part of my CompTIA and MCSE
certifications.

Wow! You know everything about something? Great job! Now you just have to
learn not to tell people that ; )

With Static IPs, the broadcast address, as listed in the hint, most likely won't work. So you need to find your broadcast addy! Just type the following:
ifconfig -a
This gives a big list. Under either 'eth0' or 'lo0' you will find an entry like:
en0: flags..
..
inet xx.xx.173.212 netmask 0xffffffe0 broadcast xx.xx.173.223
..
That xx.xx.173.223 is my broadcast, and it does the trick when I ping it.
---
-Pie

Just to let everyone know. The address to ping on a AirPort network is 10.0.1.255.
Check the network panel of system prefrences to see your IP address and replace
the last digits with 255, as explained above.

Just to clarify:
The amount of 255's must equal the number of 0's in the subnet mask. IE, if you
have a subnet mask of 255.255.255.0, the ping is x.x.x.255, if you have a subnet
mask of 255.255.0.0 the ping is x.x.255.255 and so on.

x=0
while [ '$x' -lt '255' ]; do
ping -c 1 10.0.0.$x &
x=$(expr $x + 1)
done
# Wait a few seconds for the pings above to finish
arp -a


2 questions. What if the device doesn't respond to ping. I can't tell you how
many times I've seen that. Also, what if you have a device that was configured
with a static IP on another network and then brought to yours and you don't
know what it's set to. If you know the MAC address, can you find it on the
network and configure it that way?
Jeff

If it doesn't respond to ping, you can still find the address like so:

This will ping every address in your subnet (Adjust the local address as needed, and if your block is larger than a /24 you'll have to modify the script accordingly) and then show every machine that responded to the arp request. Even if it doesn't respond to a ping, it'll respond to the arp request. The ping is just used to generate the arp request.

Mac Network Settings

I've used this to locate APs that blocked pings by default.

Pardon my stupidity, but when I type that straight into terminal, I get '-bash:
255: No such file or directory' and when I put it in ultraping.sh and do a 'sh
ultraping.sh' I get 'ultraping.sh: line 2: 255: No such file or directory'. How do I
use your instructions and can I make it into a command line command script?
Thanks in advance.
Jeff

Whoops. I make a mistake in my original post.
x=0
while [ $x -lt 255 ]; do
ping -c 1 192.168.1.$x &
x=$(expr $x + 1)
done
# Wait a few seconds for the pings above to finish
arp -a
Hopefully that works for people where my original didn't. :)

Searching For Networks On Macbook

Ummm.. I have Mac OS X 10.4.6 running and I tried the command and it works,
but it keeps looping? I don't get it. Can anyone help?

pings will keep going until you end it with

Aah. Simple. Many thanks!

Network Mac Address

if you type a -c# flag after the ping command it will only report back once, as in:
ping -c2 192.168.1.255

..as said, ctrl + C or – in Apples Terminal – Command + '.'
---
this is not the sig you`re looking for.

If you want to learn a little more about what is going on you might want to read
this page:
http://www.comptechdoc.org/independent/networking/guide/netbroadcasting.html
Knowing EVERYTHING about IP addressing was part of my CompTIA and MCSE
certifications.

Wow! You know everything about something? Great job! Now you just have to
learn not to tell people that ; )

With Static IPs, the broadcast address, as listed in the hint, most likely won't work. So you need to find your broadcast addy! Just type the following:
ifconfig -a
This gives a big list. Under either 'eth0' or 'lo0' you will find an entry like:
en0: flags..
..
inet xx.xx.173.212 netmask 0xffffffe0 broadcast xx.xx.173.223
..
That xx.xx.173.223 is my broadcast, and it does the trick when I ping it.
---
-Pie

Just to let everyone know. The address to ping on a AirPort network is 10.0.1.255.
Check the network panel of system prefrences to see your IP address and replace
the last digits with 255, as explained above.

Just to clarify:
The amount of 255's must equal the number of 0's in the subnet mask. IE, if you
have a subnet mask of 255.255.255.0, the ping is x.x.x.255, if you have a subnet
mask of 255.255.0.0 the ping is x.x.255.255 and so on.

x=0
while [ '$x' -lt '255' ]; do
ping -c 1 10.0.0.$x &
x=$(expr $x + 1)
done
# Wait a few seconds for the pings above to finish
arp -a


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Searching For Networks On Mac Os