From 862ec6bd0943b72ca483aee77bddc46d243ea716 Mon Sep 17 00:00:00 2001 From: Tommy Date: Thu, 16 May 2024 22:08:26 -0700 Subject: [PATCH] Fedora Server 40 script Signed-off-by: Tommy --- Fedora-Server-40.sh | 154 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 Fedora-Server-40.sh diff --git a/Fedora-Server-40.sh b/Fedora-Server-40.sh new file mode 100644 index 0000000..f8fab9e --- /dev/null +++ b/Fedora-Server-40.sh @@ -0,0 +1,154 @@ +#!/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 022/umask 077/g' /etc/bashrc +echo 'umask 077' | sudo tee -a /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 + +# 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 +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 +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 /boot/loader ]; then + sudo sed -i 's/quiet root/quiet mitigations=auto,nosmt spectre_v2=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret 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 root/g' /etc/kernel/cmdline + sudo dnf -y reinstall kernel-core +else + sudo grubby --update-kernel=ALL --args='mitigations=auto,nosmt spectre_v2=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret 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' +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 +echo -e '[zram0]\nzram-fraction = 1\nmax-zram-size = 8192\ncompression-algorithm = zstd' | 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/* + +# Enable auto TRIM +sudo systemctl enable fstrim.timer + +# Setup fwupd +echo 'UriSchemes=file;https' | sudo tee -a /etc/fwupd/fwupd.conf +sudo systemctl restart fwupd + +### Differentiating bare metal and virtual installs + +# Installing tuned first here because virt-what is 1 of its dependencies anyways +sudo dnf install tuned -y + +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 --set-default-zone=block +sudo firewall-cmd --permanent --add-service=dhcpv6-client +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 \ No newline at end of file