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https://github.com/tommytran732/Linux-Setup-Scripts
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Create Ubuntu-22.04-Server.sh
Signed-off-by: Tommy <contact@tommytran.io>
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Ubuntu-22.04-Server.sh
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Ubuntu-22.04-Server.sh
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#!/bin/bash
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#Meant to be run on Ubuntu Pro Minimal
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#Security kernel settings
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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
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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
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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
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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
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echo "GSSAPIAuthentication no" | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
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echo "VerifyHostKeyDNS yes" | sudo tee -a /etc/ssh/ssh_config.d/10-custom.conf
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sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
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#Setup NTS
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sudo systemctl disable systemd-timesyncd
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sudo apt install -y chrony
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rm -rf /etc/chrony/chrony.conf
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sudo curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf -o /etc/chrony/chrony.conf
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sudo systemctl restart chronyd
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#Setup UFW
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#UFW Snap is strictly confined, unlike its .deb counterpart
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sudo apt purge -y ufw
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sudo snap install ufw
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sudo ufw enable
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sudo ufw allow 22
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sudo systemctl stop apport.service
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sudo systemctl disable apport.service
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sudo systemctl mask apport.service
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sudo systemctl stop whoopsie.service
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sudo systemctl disable whoopsie.service
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sudo systemctl mask whoopsie.service
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#Update packages and firmware
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sudo apt update -y
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sudo apt full-upgrade -y
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sudo apt install fwupd
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mkdir -p /etc/systemd/system/fwupd-refresh.service.d
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echo '[Service]
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ExecStart=ExecStart=/usr/bin/fwupdmgr update' | tee /etc/systemd/system/fwupd-refresh.service.d/override.conf
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systemctl daemon-reload
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systemctl enable --now fwupd-refresh.timer
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