2/18/2023 0 Comments Ssh key cracker![]() ![]() -m: creates the home directory “/home/alice”.useradd: adds a new user with the name “alice.In this example we call our new user “Alice”. By this step we make sure, that we can change our privileges to root later on. So, in our example… ssh let’s create a new user and add him to the sudoers group. Let’s use the one from the guy or gal who tried to attack me: 221.181.185.19 (Yes, I know the owner of this IP was probably compromised himself, but anyway…) ssh the purpose of this tutorial and better readability, I will use a random IP address. The IP and login details should have been sent to you by your provider. How to setup a new user with ssh key authenticationįirst of all login to your machine with your root user and password. ![]() The best way to protect your server from this attempts is to disable the password login and enable ssh key authentication. ![]() Server attacked by SSH Brute ForceĪs you can see above every few seconds an IP, in this case from China but they come from all over the world, has tried to connect with a wrong password for the root user. Why you should disable the ssh password login and enable key authenticationĭuring the last weeks I had to spin up some servers and from the minute they were up and running they almost instantly got attacked by (probably) automated ssh brute force attacks. ![]()
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