Hello guys,
how can I find out MAC address and also IP addresses of my computer under linux console.
I know that in Win XP there is a cmd command ipconfig to get IP informations.
What about linux?
Thanks

ifconfig or /sbin/ifconfig

Command line is "ifconfig". It will show you MACs,/IPs and other parameters of all NICs if you pass no options to it.

MAC is listed as HWaddr

Note that lo = Loop back - not a real NIC so has no MAC.

I have a similar question I was hoping you could answer. How can I find out the IP address of a machine on my LAN, such as my GameCube? I have run Linux on my GameCube in the past, and I recently bought a new router, so my GameCube's IP address has changed. How can I find out what it is?

As far as I know there is no straightforward way to identify the IP address of a single host on the network unless your using a name resolution service and know the hostname of the specific host in question.

/sbin/arp -v

This will display the MAC addresses and the corresponding IP addresses of hosts that your machine has had contact with. I have found this method rather useless since this assumes you know the target host's MAC.

A technique I have found a little more useful is to use a combination of ping broadcasts and nmap.

First perform a broadcast ping to all hosts on your network.

ping -b <broadcast address>

For example on a network with address and subnet:
192.168.0.0/24

ping -b 192.168.0.255

This will give you a list of all 'live' hosts on your network.

Next use the nmap -vAO command to identify the OS on a specific system.
Example:

nmap -vAO 192.168.0.10

However, this again assumes that you have an idea of what to look for (specific ports/services and unique OS). Its time consuming so is really only effective for small networks.

Ok, thanks guys, always reliable as ever...

You can also use nmap to scan your whole network so If you do not know what the ipaddress of the host you are try to contact then let nmap find it for you.

Thanks, but how to use nmap?
Does it meant that If i don't know what are Ip addresses are of compuuters in my network, I can use nmap to find them?
Thanks

can't you just look on the dhcp settings page of your router??

all the machines connected to the router should show up there.

Sure. I use that here at work to find out whats on my network. Check out this page. This is what I used to learn more about nmap. http://insecure.org/ it also has other security tools that you can look into.

forgot, just to get you started just run this
nmap 192.168.1.0/16 [or what ever you are using for internal IP scheme]