Can you find out the IP SSH-ing your computer?

Question

If computer A SSHs computer B, can computer B find the IP of computer A? If so, how?

Answer 1

SSH connection info is also stored in the SSH_CONNECTION environmental variable.

You should be able to view this by entering echo $SSH_CONNECTION.

Answer 2

Yes. Just run netstat:

netstat --tcp --numeric

Look for the IP using the port 22. --numeric forces netstat to show IPs and --tcp only shows TCP connections

Answer 3

Yes, and here is how in Windows:

The netstat -a command shows all conections as they happen.

I am not a Linux guru, but it is very similar, and the actual base command is the same, I believe:

http://www.thegeekstuff.com/2010/03/netstat-command-examples/

Answer 4

For SSH on a specific interface, you can also use

tcpdump -i interface port 22

This will work for linux and mac and if you have a tcpdump port for windows, it will work the same way.

Answer 5

this is what you want, in a terminal:

lsof -i :ssh

it gives you the names (if available of computers sshin into your computer), if you speficically want their IP address, maybe you want to ping the name to see the IP or do an nslookup or go to http://ip2location.com ....