Your identification has been saved in /home/remote/.ssh/id_rsa.
$ ssh-keygen -t rsaĮnter file in which to save the key (/home/remote/.ssh/id_rsa):Įnter passphrase (empty for no passphrase): There are different types of keys, in this case, we’ll generate an RSA key. Now, let’s generate the key pair for the local user “remote” to access the SSH Server. There are different parameters to change here to improve the SSH security, so you can follow the documentation for this task. You must check if the selected port is open in the firewall configuration to be able to access it. You can also change the port and deny root access to make it more secure: Port 20022 Make sure you change it after having the public key in place, otherwise you won’t be able to log in. Now you have the SSH Server installed, you can configure it to only accept connections using a key. Most of the Linux Installation has SSH Server installed by default, but there are some cases where it could be missing (minimal ISO), so to install it, you just need to install the following packages: RedHat-based OS $ yum install openssh-clients openssh-server Debian-based OS $ apt update apt install openssh-client openssh-server Let’s see first, how to configure the SSH server.
With this, you don’t only need to have the password but also the private key to be able to access the remote host.Īlso, you should have a host with only the SSH server role, and keep it as isolated as possible, so in case of an external attack, it won’t affect your local servers. The most secure way to use it is by creating an SSH Key Pair. You can configure different encrypted authentication methods and it uses the 22/TCP port by default, but it’s recommended changing it for security reasons. SSH (Secure SHell), is a program/protocol that allows you to access a remote host/network, run commands, or share information. In this blog, we’ll see how to configure SSH Tunneling to access your databases in a secure way. Using SSH is also a secure way to access a remote network without extra hardware, less time consuming, and less effort than configuring a VPN server. Using a VPN connection is the most secure way to access a network if you are working remotely, but as this configuration could require hardware, time, and knowledge, you should probably want to know alternatives to do it.
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