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https://github.com/tommytran732/Linux-Setup-Scripts
synced 2024-09-07 16:23:30 -04:00
Ensure file permissions on Proxmox and RHEL
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@ -25,7 +25,6 @@ systemctl mask debug-shell.service
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## Avoid phased updates
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curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/apt/apt.conf.d/99sane-upgrades | tee /etc/apt/apt.conf.d/99sane-upgrades
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chmod 644 /etc/apt/apt.conf.d/99sane-upgrades
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# Setup NTS
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rm -rf /etc/chrony/chrony.conf
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@ -34,9 +33,7 @@ systemctl restart chronyd
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# Harden SSH
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curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf | tee /etc/ssh/sshd_config.d/10-custom.conf
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chmod 644 /etc/ssh/sshd_config.d/10-custom.conf
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curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | tee /etc/ssh/ssh_config.d/10-custom.conf
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chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
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mkdir -p /etc/systemd/system/ssh.service.d
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curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | tee /etc/systemd/system/ssh.service.d/override.conf
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systemctl daemon-reload
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@ -74,21 +71,17 @@ proxmox-boot-tool refresh
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# Kernel hardening
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curl https://raw.githubusercontent.com/secureblue/secureblue/live/config/files/usr/etc/modprobe.d/blacklist.conf | tee /etc/modprobe.d/server-blacklist.conf
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chmod 644 /etc/modprobe.d/server-blacklist.conf
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sed -i 's/kernel_io_uring_disable = 2/#ernel_io_uring_disable = 2/g'
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curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysctl.d/99-server.conf | tee /etc/sysctl.d/99-server.conf
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chmod 644 /etc/sysctl.d/99-server.conf
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sysctl -p
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# Rebuild initramfs
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update-initramfs -u
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# Disable coredump
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umask 022
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | tee /etc/security/limits.d/30-disable-coredump.conf
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mkdir -p /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 | tee /etc/systemd/coredump.conf.d/disable.conf
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umask 077
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# Harden SSH
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sed -i 's/#GSSAPIAuthentication no/GSSAPIAuthentication no/g' /etc/ssh/sshd_config
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16
RHEL-9.sh
16
RHEL-9.sh
@ -40,7 +40,9 @@ sudo chmod 700 /home/*
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# Setup NTS
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unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf | sudo tee /etc/chrony.conf
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sudo 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 644 /etc/sysconfig/chronyd
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sudo systemctl restart chronyd
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@ -67,14 +69,15 @@ sudo sysctl -p
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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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# Disable coredump
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umask 022
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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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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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umask 077
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sudo chmod 644 /etc/systemd/coredump.conf.d/disable.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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@ -124,6 +127,8 @@ forward-zone:
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forward-addr: 2606:4700:4700::1112@853#security.cloudflare-dns.com
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forward-addr: 2606:4700:4700::1002@853#security.cloudflare-dns.com' | sudo tee /etc/unbound/unbound.conf
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sudo chmod 644 /etc/unbound/unbound.conf
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mkdir -p /etc/systemd/system/unbound.service.d
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echo $'[Service]
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MemoryDenyWriteExecute=true
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@ -144,6 +149,8 @@ SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module mount @obsolete
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RestrictNamespaces=yes
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LockPersonality=yes' | sudo tee /etc/systemd/system/unbound.service.d/override.conf
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sudo chmod 644 /etc/systemd/system/unbound.service.d/override.conf
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sudo systemctl enable --now unbound
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# Setup yara
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@ -158,6 +165,7 @@ if [ "$virtualization" = 'none' ]; then
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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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@ -206,18 +214,22 @@ 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 /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 run the following commands:'
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