From b0cb3d27881f340e3e0875277c715641d56ffcbc Mon Sep 17 00:00:00 2001
From: Tommy <contact@tommytran.io>
Date: Wed, 29 May 2024 16:00:50 -0700
Subject: [PATCH] Keep RHEL 9 and F40 scripts in sync

Signed-off-by: Tommy <contact@tommytran.io>
---
 Fedora-Server-40.sh |   4 ++
 RHEL-9.sh           | 143 +++++++++++++++++++++-----------------------
 2 files changed, 73 insertions(+), 74 deletions(-)

diff --git a/Fedora-Server-40.sh b/Fedora-Server-40.sh
index 45ca27f..c387a24 100644
--- a/Fedora-Server-40.sh
+++ b/Fedora-Server-40.sh
@@ -97,6 +97,10 @@ unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/m
 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/*
 
+# Setup automatic updates
+sudo sed -i 's/apply_updates = no/apply_updates = yes\nreboot = when-needed/g' /etc/dnf/automatic.conf
+sudo systemctl enable --now dnf-automatic.timer
+
 # Remove unnecessary packages
 sudo dnf remove -y cockpit*
 
diff --git a/RHEL-9.sh b/RHEL-9.sh
index 00fe734..ac05636 100644
--- a/RHEL-9.sh
+++ b/RHEL-9.sh
@@ -22,25 +22,28 @@ unpriv(){
   sudo -u nobody "$@"
 }
 
+virtualization=$(systemd-detect-virt)
+
 # 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
 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
 
-# Make home directory private
-sudo chmod 700 /home/*
-
-# Setup Firewalld
-
-sudo firewall-cmd --permanent --remove-service=cockpit
-sudo firewall-cmd --reload
-sudo firewall-cmd --lockdown-on
-
 # Remove nullok
 sudo /usr/bin/sed -i 's/\s+nullok//g' /etc/pam.d/system-auth
 
@@ -53,47 +56,46 @@ unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/sys
 sudo systemctl daemon-reload
 sudo systemctl restart sshd
 
-# Kernel hardening
-
+# 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/10-security-misc.conf
-sudo sed -i 's/kernel.yama.ptrace_scope=2/kernel.yama.ptrace_scope=3/g' /etc/sysctl.d/10-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/10-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/10-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
-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'
+
+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'
 
 # 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
 
-# Systemd Hardening
-
-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
-
-sudo mkdir -p /etc/systemd/system/irqbalance.service.d
-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
-sudo systemctl daemon-reload
-sudo systemctl restart irqbalance
-
-# Remove packages
-
-sudo dnf remove baobab chrome-gnome-shell evince firefox gedit gnome-calculator gnome-characters gnome-font-viewer gnome-screenshot gnome-tour qemu-guest-agent 'sssd*' 'yelp*'
-
-# Setup dnf
+# 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/*
 
-# Setup unbound
+# Setup automatic updates
+sudo sed -i 's/apply_updates = no/apply_updates = yes\nreboot = when-needed/g' /etc/dnf/automatic.conf
+sudo systemctl enable --now dnf-automatic.timer
 
+# Remove unnecessary packages
+sudo dnf remove -y cockpit*
+
+# Install appropriate virtualization drivers
+if [ "$virtualization" = 'kvm' ]; then
+    sudo dnf install -y qemu-guest-agent
+fi
+
+# Setup unbound
 sudo dnf install unbound -y
 
 echo 'server:
@@ -154,51 +156,41 @@ sudo dnf install -y yara
 sudo insights-client --collector malware-detection
 sudo sed -i 's/test_scan: true/test_scan: false/' /etc/insights-client/malware-detection-config.yml
 
-# Setup automatic updates
+# Setup fwupd
+if [ "$virtualization" = 'none' ]; then
+    sudo dnf install -y fwupd
+    echo 'UriSchemes=file;https' | sudo tee -a /etc/fwupd/fwupd.conf
+    sudo systemctl restart fwupd
+    mkdir -p /etc/systemd/system/fwupd-refresh.service.d
+    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
+    sudo systemctl daemon-reload
+    sudo systemctl enable --now fwupd-refresh.timer
+fi
 
-sudo sed -i 's/apply_updates = no/apply_updates = yes\nreboot = when-needed/g' /etc/dnf/automatic.conf
-sudo systemctl enable --now dnf-automatic.timer
-
-# Enable fstrim.timer
-sudo systemctl enable --now fstrim.timer
+# 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
-
-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
-  if [ "$virt_type" = 'kvm' ]; then
-    sudo dnf install qemu-guest-agent -y
-  fi
+sudo dnf install -y tuned
+sudo systemctl enable --now tuned
+
+if [ "$virtualization" = 'none' ]; then
+    sudo tuned-adm profile latency-performance
 else
-  sudo tuned-adm profile virtual-guest
+    sudo tuned-adm profile virtual-guest
 fi
 
 # Setup real-ucode and hardened_malloc
-if [ "$virt_type" = '' ] || [ "${MACHINE_TYPE}" == 'x86_64' ]; then
+if [ "$virtualization" = 'none' ] || [ "${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
+  elif [ "$virtualization" != 'none' ]; then
     sudo dnf config-manager --save --setopt=divested.includepkgs=divested-release,hardened_malloc
     sudo dnf install hardened_malloc -y
   else
@@ -212,13 +204,16 @@ elif [ "${MACHINE_TYPE}" == 'aarch64' ]; then
   sudo dnf install hardened_malloc -y
 fi
 
-# Setup fwupd
-if [ "$virt_type" = '' ]; then
-  sudo dnf install fwupd -y
-  echo 'UriSchemes=file;https' | sudo tee -a /etc/fwupd/fwupd.conf
-  sudo systemctl restart fwupd
-  mkdir -p /etc/systemd/system/fwupd-refresh.service.d
-  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
-  sudo systemctl daemon-reload
-  sudo systemctl enable --now fwupd-refresh.timer
-fi
\ No newline at end of file
+# 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
\ No newline at end of file