<pre><code class="lang-bash">ssh root@&lt;ip&gt;
adduser &lt;name&gt;
usermod -aG sudo &lt;name&gt;

# firewall
ufw app list
ufw allow OpenSSH
ufw enable
ufw status

# setup ssh
rsync --archive --chown=&lt;user&gt;:&lt;user&gt; ~/.ssh /home/&lt;user&gt;
vi /etc/ssh/sshd_config # see below
service sshd restart

# use oh-my-zsh
su &lt;user&gt;
sudo apt install zsh git
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting
vi .zshrc # see below
source ~/.zshrc
</code></pre>
<code>/etc/ssh/sshd_config</code>:
<pre><code class="lang-bash">PasswordAuthentication no
PermitRootLogin no
AllowUsers &lt;user&gt;
</code></pre>
<code>~/.zshrc</code> (for <code>&lt;user&gt;</code>)
See <a target="_blank" href="https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins">this</a> for the list of built-in plugins available and enable what you like.
<pre><code class="lang-bash">plugins=(... zsh-syntax-highlighting colorize)
</code></pre>
Reference:
<ol>
<li><a target="_blank" href="https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu">https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu</a>
</li>
<li><a target="_blank" href="https://www.digitalocean.com/community/tutorials/ssh-essentials-working-with-ssh-servers-clients-and-keys">https://www.digitalocean.com/community/tutorials/ssh-essentials-working-with-ssh-servers-clients-and-keys</a>
</li>
</ol>

```bash
ssh root@<ip>
adduser <name>
usermod -aG sudo <name>

# firewall
ufw app list
ufw allow OpenSSH
ufw enable
ufw status

# setup ssh
rsync --archive --chown=<user>:<user> ~/.ssh /home/<user>
vi /etc/ssh/sshd_config # see below
service sshd restart

# use oh-my-zsh
su <user>
sudo apt install zsh git
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting
vi .zshrc # see below
source ~/.zshrc
```

`/etc/ssh/sshd_config`:

```bash
PasswordAuthentication no
PermitRootLogin no
AllowUsers <user>
```

`~/.zshrc` (for `<user>`)

See [this](https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins) for the list of built-in plugins available and enable what you like.

```bash
plugins=(... zsh-syntax-highlighting colorize)
```

Reference:

1. [https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu](https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu)
 
2. [https://www.digitalocean.com/community/tutorials/ssh-essentials-working-with-ssh-servers-clients-and-keys](https://www.digitalocean.com/community/tutorials/ssh-essentials-working-with-ssh-servers-clients-and-keys)

Ubuntu 24.04 Setup