Add public zram generator config

Signed-off-by: Tommy <contact@tommytran.io>

Fedora-Server-40.sh

@@ -0,0 +1,158 @@
+#!/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
+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 /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

Ubuntu-24.04-Server.sh

@@ -67,11 +67,11 @@ 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
-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
-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 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
+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 sysctl -p
 
 # Rebuild initramfs

etc/systemd/zram-generator.conf

@@ -0,0 +1,4 @@
+[zram0]
+zram-fraction = 1
+max-zram-size = 8192
+compression-algorithm = zstd