mirror of
https://github.com/tommytran732/Linux-Setup-Scripts
synced 2024-11-08 11:11:34 -05:00
194 lines
9.5 KiB
Bash
194 lines
9.5 KiB
Bash
#!/bin/bash
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# Copyright (C) 2021-2024 Thien Tran
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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#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
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output(){
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echo -e '\e[36m'"$1"'\e[0m';
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}
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unpriv(){
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sudo -u nobody "$@"
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}
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virtualization=$(systemd-detect-virt)
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# Increase compression level
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sudo sed -i 's/zstd:1/zstd/g' /etc/fstab
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# Compliance
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sudo systemctl mask debug-shell.service
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sudo systemctl mask kdump.service
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# Setting umask to 077
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umask 077
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sudo sed -i 's/^UMASK.*/UMASK 077/g' /etc/login.defs
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sudo sed -i 's/^HOME_MODE/#HOME_MODE/g' /etc/login.defs
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sudo sed -i 's/^USERGROUPS_ENAB.*/USERGROUPS_ENAB no/g' /etc/login.defs
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sudo sed -i 's/umask 022/umask 077/g' /etc/bashrc
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# Make home directory private
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sudo chmod 700 /home/*
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# Setup NTS
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sudo rm -rf /etc/chrony.conf
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unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf | sudo tee /etc/chrony.conf
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sudp chmod 644 /etc/chrony.conf
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysconfig/chronyd | sudo tee /etc/sysconfig/chronyd
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sudo chmod 544 /etc/sysconfig/chronyd
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sudo systemctl restart chronyd
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# Remove nullok
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sudo /usr/bin/sed -i 's/\s+nullok//g' /etc/pam.d/system-auth
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# Harden SSH
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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
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sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
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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
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sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf
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sudo mkdir -p /etc/systemd/system/sshd.service.d/
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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
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sudo chmod 644 /etc/systemd/system/sshd.service.d/override.conf
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sudo systemctl daemon-reload
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sudo systemctl restart sshd
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# Security kernel settings
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unpriv curl https://raw.githubusercontent.com/secureblue/secureblue/live/config/files/usr/etc/modprobe.d/blacklist.conf | sudo tee /etc/modprobe.d/server-blacklist.conf
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sudo chmod 644 /etc/modprobe.d/server-blacklist.conf
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysctl.d/99-server.conf | sudo tee /etc/sysctl.d/99-server.conf
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sudo chmod 644 /etc/sysctl.d/99-server.conf
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sudo dracut -f
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sudo sysctl -p
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if [ -d /usr/lib/systemd/boot/efi ]; then
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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
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sudo dnf reinstall -y kernel-core
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else
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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'
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fi
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# Disable coredump
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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
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sudo chmod 644 /etc/security/limits.d/30-disable-coredump.conf
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sudo mkdir -p /etc/systemd/coredump.conf.d
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sudo chmod 755 /etc/systemd/coredump.conf.d
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
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sudo chmod 644 /etc/systemd/coredump.conf.d/disable.conf
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# Setup ZRAM
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/zram-generator.conf | sudo tee /etc/systemd/zram-generator.conf
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sudo chmod 644 /etc/systemd/zram-generator.conf
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# Setup DNF
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dnf/dnf.conf | sudo tee /etc/dnf/dnf.conf
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sudo chmod 644 /etc/dnf/dnf.conf
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sudo sed -i 's/^metalink=.*/&\&protocol=https/g' /etc/yum.repos.d/*
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# Setup automatic updates
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sudo dnf install -y dnf-automatic
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sudo sed -i 's/apply_updates = no/apply_updates = yes\nreboot = when-needed/g' /etc/dnf/automatic.conf
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sudo systemctl enable --now dnf-automatic.timer
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# Remove unnecessary packages
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sudo dnf remove -y cockpit*
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# Install hardened_malloc
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sudo dnf copr enable secureblue/hardened_malloc -y
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sudo dnf install -y hardened_malloc
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echo 'libhardened_malloc.so' | sudo tee /etc/ld.so.preload
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sudo chmod 644 /etc/ld.so.preload
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# Install appropriate virtualization drivers
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if [ "$virtualization" = 'kvm' ]; then
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sudo dnf install -y qemu-guest-agent
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fi
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# Setup unbound
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sudo dnf install unbound -y
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/unbound/unbound.conf | sudo tee /etc/unbound/unbound.conf
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sudo chmod 644 /etc/unbound/unbound.conf
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sudo mkdir /etc/systemd/system/unbound.service.d
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/systemd/system/unbound.service.d/override.conf | sudo tee /etc/systemd/system/unbound.service.d/override.conf
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sudo chmod 644 /etc/systemd/system/unbound.service.d/override.conf
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sudo systemctl enable --now unbound
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sudo systemctl disable systemd-resolved
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# Setup fwupd
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if [ "$virtualization" = 'none' ]; then
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sudo dnf install -y fwupd
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echo 'UriSchemes=file;https' | sudo tee -a /etc/fwupd/fwupd.conf
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sudo systemctl restart fwupd
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mkdir -p /etc/systemd/system/fwupd-refresh.service.d
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/system/fwupd-refresh.service.d/override.conf | sudo tee /etc/systemd/system/fwupd-refresh.service.d/override.conf
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sudo chmod 644 /etc/systemd/system/fwupd-refresh.service.d/override.conf
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sudo systemctl daemon-reload
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sudo systemctl enable --now fwupd-refresh.timer
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fi
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# Enable auto TRIM
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sudo systemctl enable fstrim.timer
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### Differentiating bare metal and virtual installs
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# Setup tuned
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sudo dnf install -y tuned
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sudo systemctl enable --now tuned
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if [ "$virtualization" = 'none' ]; then
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sudo tuned-adm profile latency-performance
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else
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sudo tuned-adm profile virtual-guest
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fi
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# Setup real-ucode
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MACHINE_TYPE=$(uname -m)
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if [ "$virtualization" = 'none' ] || [ "${MACHINE_TYPE}" == 'x86_64' ]; then
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sudo dnf install -y 'https://divested.dev/rpm/fedora/divested-release-20231210-2.noarch.rpm'
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sudo sed -i 's/^metalink=.*/&?protocol=https/g' /etc/yum.repos.d/divested-release.repo
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sudo dnf config-manager --save --setopt=divested.includepkgs=divested-release,real-ucode,microcode_ctl,amd-ucode-firmware
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sudo dnf install -y real-ucode
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sudo dracut -f
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fi
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# Setup networking
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sudo firewall-cmd --permanent --remove-service=cockpit
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sudo firewall-cmd --reload
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sudo firewall-cmd --lockdown-on
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sudo mkdir -p /etc/systemd/system/NetworkManager.service.d
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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
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sudo chmod 644 /etc/systemd/system/NetworkManager.service.d/99-brace.conf
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sudo systemctl daemon-reload
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sudo systemctl restart NetworkManager
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# irqbalance hardening
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sudo mkdir -p /etc/systemd/system/irqbalance.service.d
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unpriv curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/irqbalance.service.d/99-brace.conf | sudo tee /etc/systemd/system/irqbalance.service.d/99-brace.conf
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sudo chmod 644 /etc/systemd/system/irqbalance.service.d/99-brace.conf
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sudo systemctl daemon-reload
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sudo systemctl restart irqbalance
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# Setup notices
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue | sudo tee /etc/issue
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sudo chmod 644 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue | sudo tee /etc/issue.net
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sudo chmod 644 /etc/issue.net
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# Final notes to the user
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output 'Server setup complete. To use unbound for DNS, you need to reboot.' |