network monitoring

[Alfredo Raymundo]

I nedd to know the MAC addresses of my local network (using TCP/IP protocol), by any chance do you happen to know of a monitoring or network (free) software that can be installed my HP server ?

Thank You

[Sridhar Bhaskarla]

Hi,

You can find the MAC addresses of all the systems in the broadcast domain of your HP server. First, ping to all the systems from your HP system.

Get the broadcast address using ifconfig command.

#ifconfig lan0 (or the card that you use. Note down the broadcast address ex., 128.10.10.255)
#ping 128.10.10.255
You will see multiple responses here. Wait for a minute.
#arp -a

Here you should see the arp tables consisting of IP addresses|hostnames and the MAC addresses

If you want to find it for a single host, then ping that host and search for it in arp -a again.

If you ping to a system not on your subnet, then the MAC address you will get is of your router.

-Sri

[Kenneth_18]

Hi,

You could try to use the "arp -a" command as root. This will show the IP to MAC address mapping detected by your HP server for the local segment it is connected to.

[Michael Tully]

Using arp -a should show you all the mac addresses that your server can see.

# arp -a

See the man page for further information

[V. V. Ravi Kumar_1]

hi,
just run this script, i assumed here 96.0.0.0 network. once this scipt runs, all mac addresses of ur local network will be cashed into ARP cache. then run arp -a command as root. u will get all mac addresses of machines in ur network.

i=1
while true
do
ping 96.0.0.$i -n 1
i=`expr $i + 1`
if [ $i -eq 255 ]
then
exit
fi

Best regards

[Ravi_8]

Hi
arp -a will give you the mac addresses in the local n/w

[T G Manikandan]

checked a software
GFI LANguard Network Security Scanner 3.0

It's good

download it from
http://download.com.com/3000-2092-10171938.html?tag=lst-0-1

File--->New scan

select the range of ip's
and start and you can view what you need.


Note:

The activity will broadcast packets on the local network.