2023-06-06 01:54:42 -04:00
#!/bin/bash
#Please note that this is how I PERSONALLY setup my computer - I do some stuff such as not using anything to download GNOME extensions from extensions.gnome.org and installing the extensions as a package instead
#Customize it to your liking
#Run this script as your admin user, NOT root
2023-06-06 18:04:04 -04:00
#Compliance
sudo ua enable usg
sudo apt install -y usg
sudo usg fix cis_level2_workstation
#Allow su which is disabled by CIS
sudo sed -i 's/auth required pam_wheel.so use_uid group=sugroup//g' /etc/pam.d/su
2023-06-06 01:54:42 -04:00
#Setting umask to 077
umask 077
sudo sed -ie '/^DIR_MODE=/ s/=[0-9]*\+/=0700/' /etc/adduser.conf
sudo sed -ie '/^UMASK\s\+/ s/022/077/' /etc/login.defs
sudo sed -i 's/USERGROUPS_ENAB yes/USERGROUPS_ENAB no/g' /etc/login.defs
echo "umask 077" | sudo tee --append /etc/profile
2023-06-06 01:56:18 -04:00
#Make sure the system has curl (minimal installs do not include it)
sudo apt install -y curl
2023-06-06 01:54:42 -04:00
#Security kernel settings
sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf -o /etc/modprobe.d/30_security-misc.conf
sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_security-misc.conf -o /etc/sysctl.d/30_security-misc.conf
sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_silent-kernel-printk.conf -o /etc/sysctl.d/30_silent-kernel-printk.conf
sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_security-misc_kexec-disable.conf -o /etc/sysctl.d/30_security-misc_kexec-disable.conf
#Systemd Hardening
sudo mkdir -p /etc/systemd/system/NetworkManager.service.d
sudo curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf -o /etc/systemd/system/NetworkManager.service.d/99-brace.conf
sudo mkdir -p /etc/systemd/system/irqbalance.service.d
sudo curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/irqbalance.service.d/99-brace.conf -o /etc/systemd/system/irqbalance.service.d/99-brace.conf
sudo mkdir -p /etc/systemd/system/sshd.service.d
sudo curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/limits.conf -o /etc/systemd/system/sshd.service.d/limits.conf
echo "GSSAPIAuthentication no" | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
echo "VerifyHostKeyDNS yes" | sudo tee -a /etc/ssh/ssh_config.d/10-custom.conf
2023-06-06 02:00:57 -04:00
#Setup NTS
2023-06-06 02:42:00 -04:00
sudo systemctl disable systemd-timesyncd
2023-06-22 03:31:27 -04:00
sudo apt install -y chrony
2023-06-06 02:00:57 -04:00
rm -rf /etc/chrony/chrony.conf
2023-06-06 02:36:44 -04:00
sudo curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf -o /etc/chrony/chrony.conf
2023-06-06 02:42:00 -04:00
sudo systemctl restart chronyd
2023-06-06 02:36:44 -04:00
2023-06-06 02:57:50 -04:00
# Disable automount
2023-06-22 07:33:36 -04:00
sudo mkdir -p /etc/dconf/db/local.d/locks/
2023-06-06 02:57:50 -04:00
echo ' [ org/gnome/desktop/media-handling]
automount = false
automount-open= false' | sudo tee /etc/dconf/db/local.d/automount-disable
echo ' org/gnome/desktop/media-handling/automount
org/gnome/desktop/media-handling/automount-open' | sudo tee /etc/dconf/db/local.d/locks/automount-disable
sudo dconf update
2023-06-06 02:36:44 -04:00
#Setup UFW
2023-06-06 04:16:18 -04:00
#UFW Snap is strictly confined, unlike its .deb counterpart
sudo apt purge -y ufw
sudo snap install ufw
2023-06-06 02:36:44 -04:00
sudo ufw enable
2023-06-06 02:00:57 -04:00
2023-06-06 01:54:42 -04:00
#Disable crash reports
2023-06-22 07:43:34 -04:00
echo ' [ com/ubuntu/update-notifier]
show-apport-crashes= false' | sudo tee /etc/dconf/db/local.d/disable-apport-crashes
echo 'com/ubuntu/update-notifier/show-apport-crashes' | sudo tee /etc/dconf/db/local.d/locks/disable-apport-crashes
2023-06-22 07:44:37 -04:00
sudo dconf update
2023-06-06 01:54:42 -04:00
ubuntu-report -f send no
sudo systemctl stop apport.service
sudo systemctl disable apport.service
sudo systemctl mask apport.service
sudo systemctl stop whoopsie.service
sudo systemctl disable whoopsie.service
sudo systemctl mask whoopsie.service
2023-06-06 02:00:57 -04:00
#Update packages and firmware
sudo apt update -y
sudo apt full-upgrade -y
sudo fwupdmgr get-devices
sudo fwupdmgr refresh --force
sudo fwupdmgr get-updates -y
sudo fwupdmgr update -y
2023-06-06 01:54:42 -04:00
#Remove unneeded packages
2023-06-22 20:13:04 -04:00
sudo apt purge -y cups* eog gedit firefox* gnome-calculator gnome-characters* gnome-font-viewer gnome-logs gnome-power-manager gnome-shell-extension-prefs seahorse tcpdump whoopsie
2023-06-06 05:13:25 -04:00
sudo apt autoremove -y
2023-06-06 01:54:42 -04:00
#Install packages that I use
2023-06-06 04:21:44 -04:00
sudo apt install -y git-core gnome-text-editor
2023-06-06 23:36:17 -04:00
sudo snap install eog
2023-06-06 02:06:15 -04:00
#Randomize MAC address
sudo bash -c 'cat > /etc/NetworkManager/conf.d/00-macrandomize.conf' <<-'EOF'
[ device]
wifi.scan-rand-mac-address= yes
[ connection]
wifi.cloned-mac-address= random
ethernet.cloned-mac-address= random
connection.stable-id= ${ CONNECTION } /${ BOOT }
EOF
sudo systemctl restart NetworkManager