I have two laptops and one desktop computer at my home, all running Ubuntu 18.04. Openssh-server and ssh is installed on each of them. However, I am unable to login from one of them onto another of them; e.g., when on the computer with hostname Machine-1, an attempt to login to Machine-2 using: ssh @Machine-2 fails. SSH root login is disabled by default in Ubuntu 18.04. SSH server for Ubuntu provides by the openssh-server package and root login is controlled by the PermitRootLogin directive in the OpenSSH server configuration (sshdconfig file). You can check the current status by running the following command. How to Use SSH Keys; Server Running Ubuntu 18.04; Topics. Creating a New Sudo User; Changing the SSH Daemon Configuration; Creating a New Sudo User. It is always best practice to disallow root authentication over SSH since this is the username people will try to hack into the most. Konfigurasi SSH Ubuntu Server juga lebih aman jika dibandingkan dengan metode lainnya, seperti telnet dan rcp karena SSH menyisipkan fasilitas enkripsi data, sehingga virus sejenis malicious tidak bisa mengetahui username dan password yang digunakan. Berikut beberapa langkah singkat untuk dapat melakukan Konfigurasi SSH Ubuntu Server 18.04.
Yes, new major system upgrade new rules. If you’ve installed openssh server till Ubuntu 18 (Bionic Beaver) with just the simple command:
Now it is impossible as you can see. It is strange why they just did not include it as an alias just to prevent you from searching the Net (google?).
So there is a new way of installing OpenSSH server – it is a software collection called “OpenSSH server” and there is a new tool to manage such collections:
So you must use tasksel to install OpenSSH server, here is the three command you should use:
And their explanation below in steps:
STEP 1) Update your server!
Because you could miss tasksel, it is not installed by default and even after clean install it seems not available before you do an update:
STEP 2) Install tasksel
STEP 3) Install OpenSSH server with tasksel
Openssh-server Ubuntu 18.04 Deb
You are going to enter an console based graphic setup showing you the installation of the software collection “OpenSSH server”
Here is what is going to see after the above command:
* Throubleshooting – no tasksel packet!
Just DO NOT skip STEP 1) – update your package lists!!!