Main Menu

Installing Ubuntu Server Operating System

1) Assigning a fixed IP-Address

sudo cd /etc/netplan
sudo nano  01-network-manager-all.yaml

Type the following in the file

# Let NetworkManager manage all devices on this system. 
#Use Tab Space to maintain parent and child.

network:
    version: 2
    renderer: NetworkManager
    ethernets:
        eno1:
            dhcp4: false
            addresses:
                - 163.143.87.200/24
            routes:
                - to: default
                via: 163.143.87.1
            nameservers:
                addresses: [163.143.1.100]

Save the file and exit (press Control + X, and Y). Next, type the following command on the terminal:

sudo netplan apply

2) Setting up SSH so that we can do configurations easily

sudo apt install -y openssh-server


sudo systemctl enable ssh
sudo systemctl start ssh
sudo systemctl status ssh

sudo ufw enable
sudo ufw allow ssh    
sudo ufw reload

Now, login remotely into the server using ssh, and perform any of the below steps.

3) Installation of Remote Desktop

Click here for the detailed instructions

sudo apt install xrdp -y 
sudo systemctl status xrdp
sudo usermod -a -G ssl-cert xrdp

sudo vi /etc/xrdp/startwm.sh
# Add below statements above the line test -x (line 32 around)    
    Unset DBUS_SESSION_ADDRESS
    Unset XDG_RUNTIME_DIR
# Save the file and exit

sudo systemctl restart xrdp 
sudo systemctl status xrdp
sudo ufw status
sudo ufw default allow outgoing
sudo ufw default deny incoming 
sudo ufw allow ssh
sudo ufw enable
sudo systemctl status ufw.service
sudo ufw allow 3389/tcp
sudo ufw reload

4) Prevent Network Idle Sleep

Click here for the detailed instructions

sudo vi /etc/avahi/avahi-daemon.conf
# Update  domain-name=local  to domain-name=.alocal
# Save the file and exit

sudo vi /etc/default/avahi-daemon
# Update AVAHI_DAEMON_DETECT_LOCAL=1 to AVAHI_DAEMON_DETECT_LOCAL=0
# Save the file and exit

sudo systemctl disable systemd-networkd-wait-online.service
sudo systemctl mask systemd-networkd-wait-online.service
sudo reboot  #NOT NECESSARY IF YOU ARE DOING THE NEXT STEP IMMEDIATELY

5) Prevent remote network disconnection during idle

sudo apt install wget openssh-server -y 
 
sudo vi /etc/ssh/sshd_config

#Write the following text at the end of the file
ClientAliveInterval 600
TCPKeepAlive yes
ClientAliveCountMax 10
#Save the file and exit

sudo /etc/init.d/ssh restart

6) Installation of GUI, Anti-virus, OpenSSH, Tex, CURL and Other Python Libraries

sudo  apt-get  update && sudo  apt-get  upgrade

#Installing Tex, CURL, GUI, Anti-virus and OpenSSH libraries:
sudo  apt-get  install -y  texlive-xetex texlive-full texstudio texmaker texlive-latex-extra pandoc curl  libffi-dev libssl-dev libxml2-dev libxslt1-dev libjpeg8-dev zlib1g-dev python3-pip openssl libssl-dev build-essential libcurl4-gnutls-dev libxml2-dev tasksel lightdm clamav clamav-daemon mailutils gnupg2  vim bash-completion

#Setting up Python Libraries
pip install click mitmproxy

#Setting up anti-virus.
sudo systemctl stop clamav-freshclam

#Choose 'No Configuration' option. Press any key to continue... 
sudo freshclam -d -c 2  #freshclam
sudo systemctl start clamav-freshclam
sudo systemctl enable clamav-freshclam
sudo systemctl status clamav-freshclam

#Setting up the tasksel GUI. Choose 'Ubuntu/Debian Desktop'. Press any key to continue... 
sudo  tasksel

#Basic libraries have been installed. Rebooting the server
sudo reboot

7) Allowing a program to utilize more memory

echo 1 | sudo tee /proc/sys/vm/overcommit_memory

8) Recording the history of each user’s commands with a timestamp

sudo vi /etc/profile
export HISTTIMEFORMAT="%F %T " 
#save and exit