Ssh who is connected

As you can see this command also displays the idle time details, source IP, login time, load average and processes. Netstat is a command-line tool that can be used to show active or Established SSH connections from the remote hosts to your server. With last command you can also find the active SSH connection information between client and server. You can use ssh command with grep to list the active SSH connection in your server.

As you can see, there are two active connections from the client IP In the above guide, we learned how to find active SSH connections with different methods. Doesn't matter. This is one of the best answers I've seen on any Stack site! I now know a ton more about this particular area for lack of a better word. EDIT: Thank you! Mentioned but easy to miss in the answer, sftp and also connections started with ssh -N is absent from who output. Thank you; this answer is much better than the top answer, which only lists users who are logged into a shell.

This solution also finds SFTP users. See serverfault. This helped! You can also use ps ax grep sshd. Joel Inglao Joel Inglao 1 1 silver badge 3 3 bronze badges. Expanding on sebelk's answer: The solution using netstat is a good one but requires root privileges.

Meijer A. Meijer 1 1 silver badge 3 3 bronze badges. On some ss binaries perhaps the newer ones , the port is shown instead of ssh. So, if you configured you SSH server port on for instance, you'll have to do ss grep Added for simple reference.

To expand on the previous answers dealing with Bash globals. This will display information for the currently active session — the one you're typing into. But the question asks how to list all the currently connected sessions.

I executed almost all the above commands and I think the best way to find the currently logged in users via ssh are last grep "still logged in" AND who -a. You can use last head I used this in my. Williams J. Williams 69 1 1 silver badge 2 2 bronze badges. Depending on the login activity, even the session you ran last in may not be listed.

Williams Which version of last supports -p? It works by checking the designated file. The command also gives you information about the created SSH sessions between the client and server. Since the output from the last command is massive, we can use the grep command to show the active sessions only. The last command supports numerous options. Here are the most commonly used options for the last command. We cannot forget about the netstat command.

Netstat is used to show all network connections, network interfaces, routing tables and more. You can also use the netstat command to filter for established or connected SSH sessions on your Linux server:. To show all connections including listening and non-listening, we can use the -a flag as:. If you want to learn more information about the connected SSH sessions, you can use the ss command, which shows socket data, making it similar to netstat.

For example, we can grep the output from the ss command with the -a option all to show all connected SSH sessions. The syntax for that is:. The output above displays all the SSH connections on the remote host. This will include the SSHD daemon. The ss command also has tons of other options you can use to learn various things about active server connections. For example, you can use the -e flag to show more about the socket information.

It is good practice to keep monitoring your remote hosts for unauthorized SSH logins and take necessary actions, such as securing your server or disabling password authentication. By signing up, you agree to our Privacy Policy and European users agree to the data transfer policy. John is a technical writer at MTE, when is not busy writing tech tutorials, he is staring at the screen trying to debug code. You've decided to leave a comment.