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How to access Ubuntu terminal by browser: Shellinabox
In this tutorial, we will see how to install Shellinabox and use a modern web browser on any machine to connect to a remote SSH terminal. When you are behind a firewall and only HTTP(s) traffic can get through, Web-based SSH is very helpful.
Shellinabox is included by default on many Linux distributions, such as Debian, Ubuntu, and Linux Mint, through their default repositories.
- Super user( root) or any normal user with SUDO privileges.
- apt repositories enabled and available to install packages.
To install the Shellinabox on your Ubuntu server, first update the apt repository on it. To do so, use the below command.
# apt update
And now you can install the shellinabox on your machine.
# apt install shellinabox -y
# systemctl start shellinabox
# systemctl enable shellinabox
2- Configure Shellinabox
The configuration file has a different name and directory in which it is present as you go from one Linux flavour to another. In Debian the configuration file can be found as- /etc/sysconfig/shellinaboxd
# vi /etc/default/shellinabox
3- Points to remember:
- For security reasons, we should change the default port number of shellinabox service.
- Make sure to enable the shellinabox port in your firewall( if you are using one)
4- Verify the port and running status of Shellinabox
Using the netstat command, you can see the all the listening tcp and udp ports of your server.
# netstat -tunlp | grep shellinaboxd
Output: tcp 0 0 0.0.0.0:4200 0.0.0.0:* LISTEN 70563/shellinaboxd
Now, open your web browser and go to https://Your-IP-Address:4200. You should be able to see an SSH terminal that runs on the web. When you log in with your username and password, you should see your shell prompt.
After you hit the browser with your serverip and port number, you will see a warning page on which it is showing a security risk. This warning is showing because of lack of ssl on your server for this site. To ignore this, press 'Advanced' and then 'Accept and Continue'
After this, you will see a blank white screen prompt which will ask you the username similar to which you see on your ssh prompt. Here, enter the username, from which you want to login. After username it will ask you the password.
For entering the password, you can enter it either by typing manually or just right click on your browser screen and select 'Paste from browser' and paste the password on the next windows.
After entering the password on the below like screen, either press enter or click on 'ok'
After successfully loging in to your server, you can use your browser same as you use your ssh login.
In this tutorial, you have learnt how to access Ubuntu terminal by browser: Shellinabox