mirror of
https://github.com/tommytran732/Linux-Setup-Scripts
synced 2024-11-08 11:11:34 -05:00
172 lines
8.8 KiB
Bash
172 lines
8.8 KiB
Bash
#!/bin/bash
|
|
|
|
# Copyright (C) 2021-2024 Thien Tran
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
|
|
# use this file except in compliance with the License. You may obtain a copy of
|
|
# the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations under
|
|
# the License.
|
|
|
|
#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
|
|
|
|
output(){
|
|
echo -e '\e[36m'"$1"'\e[0m';
|
|
}
|
|
|
|
unpriv(){
|
|
sudo -u nobody "$@"
|
|
}
|
|
|
|
# Increase compression level
|
|
sudo sed -i 's/zstd:1/zstd:3/g' /etc/fstab
|
|
|
|
# Compliance
|
|
sudo systemctl mask debug-shell.service
|
|
sudo systemctl mask kdump.service
|
|
|
|
# Setting umask to 077
|
|
umask 077
|
|
sudo sed -i 's/^UMASK.*/UMASK 077/g' /etc/login.defs
|
|
sudo sed -i 's/^HOME_MODE/#HOME_MODE/g' /etc/login.defs
|
|
sudo sed -i 's/^USERGROUPS_ENAB.*/USERGROUPS_ENAB no/g' /etc/login.defs
|
|
sudo sed -i 's/umask 022/umask 077/g' /etc/bashrc
|
|
|
|
# Make home directory private
|
|
sudo chmod 700 /home/*
|
|
|
|
# Setup NTS
|
|
sudo rm -rf /etc/chrony.conf
|
|
unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf | sudo tee /etc/chrony.conf
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysconfig/chronyd | sudo tee /etc/sysconfig/chronyd
|
|
|
|
sudo systemctl restart chronyd
|
|
|
|
# Remove nullok
|
|
sudo /usr/bin/sed -i 's/\s+nullok//g' /etc/pam.d/system-auth
|
|
|
|
# Harden SSH
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
|
|
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
|
|
sudo mkdir -p /etc/systemd/system/sshd.service.d/
|
|
unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/sshd.service.d/override.conf
|
|
sudo systemctl daemon-reload
|
|
sudo systemctl restart sshd
|
|
|
|
# Security kernel settings
|
|
unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf | sudo tee /etc/modprobe.d/30_security-misc.conf
|
|
sudo chmod 644 /etc/modprobe.d/30_security-misc.conf
|
|
sudo sed -i 's/#install msr/install msr/g' /etc/modprobe.d/30_security-misc.conf
|
|
sudo sed -i 's/# install bluetooth/install bluetooth/g' /etc/modprobe.d/30_security-misc.conf
|
|
sudo sed -i 's/# install btusb/install btusb/g' /etc/modprobe.d/30_security-misc.conf
|
|
unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/990-security-misc.conf | sudo tee /etc/sysctl.d/990-security-misc.conf
|
|
sudo chmod 644 /etc/sysctl.d/990-security-misc.conf
|
|
sudo sed -i 's/kernel.yama.ptrace_scope=2/kernel.yama.ptrace_scope=3/g' /etc/sysctl.d/990-security-misc.conf
|
|
sudo sed -i 's/net.ipv4.icmp_echo_ignore_all=1/net.ipv4.icmp_echo_ignore_all=0/g' /etc/sysctl.d/990-security-misc.conf
|
|
sudo sed -i 's/net.ipv6.icmp.echo_ignore_all=1/net.ipv6.icmp.echo_ignore_all=0/g' /etc/sysctl.d/990-security-misc.conf
|
|
unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/30_silent-kernel-printk.conf | sudo tee /etc/sysctl.d/30_silent-kernel-printk.conf
|
|
sudo chmod 644 /etc/sysctl.d/30_silent-kernel-printk.conf
|
|
unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/30_security-misc_kexec-disable.conf | sudo tee /etc/sysctl.d/30_security-misc_kexec-disable.conf
|
|
sudo chmod 644 /etc/sysctl.d/30_security-misc_kexec-disable.conf
|
|
sudo dracut -f
|
|
sudo sysctl -p
|
|
|
|
if [ -d /usr/lib/systemd/boot/efi ]; then
|
|
sudo sed -i 's/quiet root/quiet mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off lockdown=confidentiality module.sig_enforce=1 console=tty0 console=ttyS0,115200 root/g' /etc/kernel/cmdline
|
|
sudo dnf reinstall -y kernel-core
|
|
else
|
|
sudo grubby --update-kernel=ALL --args='mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off lockdown=confidentiality module.sig_enforce=1 console=tty0 console=ttyS0,115200'
|
|
fi
|
|
|
|
# Disable coredump
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
|
|
|
|
# Setup ZRAM
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/zram-generator.conf | sudo tee /etc/systemd/zram-generator.conf
|
|
|
|
# Setup DNF
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dnf/dnf.conf | sudo tee /etc/dnf/dnf.conf
|
|
sudo sed -i 's/^metalink=.*/&\&protocol=https/g' /etc/yum.repos.d/*
|
|
|
|
# Remove unnecessary packages
|
|
sudo dnf remove -y cockpit*
|
|
|
|
# Setup fwupd
|
|
echo 'UriSchemes=file;https' | sudo tee -a /etc/fwupd/fwupd.conf
|
|
sudo systemctl restart fwupd
|
|
|
|
# Enable auto TRIM
|
|
sudo systemctl enable fstrim.timer
|
|
|
|
### Differentiating bare metal and virtual installs
|
|
|
|
# Installing tuned first here because virt-what is 1 of its dependencies anyways
|
|
sudo dnf install tuned -y
|
|
sudo systemctl enable --now tuned
|
|
|
|
virt_type=$(virt-what)
|
|
if [ "$virt_type" = '' ]; then
|
|
output 'Virtualization: Bare Metal.'
|
|
elif [ "$virt_type" = 'openvz lxc' ]; then
|
|
output 'Virtualization: OpenVZ 7.'
|
|
elif [ "$virt_type" = 'xen xen-hvm' ]; then
|
|
output 'Virtualization: Xen-HVM.'
|
|
elif [ "$virt_type" = 'xen xen-hvm aws' ]; then
|
|
output 'Virtualization: Xen-HVM on AWS.'
|
|
else
|
|
output "Virtualization: $virt_type."
|
|
fi
|
|
|
|
# Setup tuned
|
|
if [ "$virt_type" = '' ]; then
|
|
sudo tuned-adm profile latency-performance
|
|
else
|
|
if [ "$virt_type" = 'kvm' ]; then
|
|
sudo dnf install qemu-guest-agent -y
|
|
fi
|
|
sudo tuned-adm profile virtual-guest
|
|
fi
|
|
|
|
# Setup real-ucode and hardened_malloc
|
|
MACHINE_TYPE=$(uname -m)
|
|
if [ "$virt_type" = '' ] || [ "${MACHINE_TYPE}" == 'x86_64' ]; then
|
|
sudo dnf install 'https://divested.dev/rpm/fedora/divested-release-20231210-2.noarch.rpm' -y
|
|
sudo sed -i 's/^metalink=.*/&?protocol=https/g' /etc/yum.repos.d/divested-release.repo
|
|
if [ "${MACHINE_TYPE}" != 'x86_64' ]; then
|
|
sudo dnf config-manager --save --setopt=divested.includepkgs=divested-release,real-ucode,microcode_ctl,amd-ucode-firmware
|
|
sudo dnf install real-ucode -y
|
|
sudo dracut -f
|
|
elif [ "$virt_type" != '' ]; then
|
|
sudo dnf config-manager --save --setopt=divested.includepkgs=divested-release,hardened_malloc
|
|
sudo dnf install hardened_malloc -y
|
|
else
|
|
sudo dnf config-manager --save --setopt=divested.includepkgs=divested-release,real-ucode,microcode_ctl,amd-ucode-firmware,hardened_malloc
|
|
sudo dnf install real-ucode hardened_malloc -y
|
|
echo 'libhardened_malloc.so' | sudo tee /etc/ld.so.preload
|
|
sudo dracut -f
|
|
fi
|
|
elif [ "${MACHINE_TYPE}" == 'aarch64' ]; then
|
|
sudo dnf copr enable secureblue/hardened_malloc -y
|
|
sudo dnf install hardened_malloc -y
|
|
fi
|
|
|
|
# Setup Networking
|
|
sudo firewall-cmd --permanent --remove-service=cockpit
|
|
sudo firewall-cmd --reload
|
|
sudo firewall-cmd --lockdown-on
|
|
|
|
sudo mkdir -p /etc/systemd/system/NetworkManager.service.d
|
|
unpriv curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf | sudo tee /etc/systemd/system/NetworkManager.service.d/99-brace.conf
|
|
sudo systemctl daemon-reload
|
|
sudo systemctl restart NetworkManager
|
|
|
|
# Setup notices
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue | sudo tee /etc/issue
|
|
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue | sudo tee /etc/issue.net |