mirror of
https://github.com/tommytran732/Linux-Setup-Scripts
synced 2024-09-19 13:44:43 -04:00
147 lines
5.3 KiB
Bash
147 lines
5.3 KiB
Bash
#!/bin/bash
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#Assuming that you are using ANSSI-BP-028
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# Setup NTS
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sudo curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf -o /etc/chrony.conf
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echo '# Command-line options for chronyd
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OPTIONS="-F 1"' | sudo tee /etc/sysconfig/chronyd
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sudo systemctl restart chronyd
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# Setup Firewalld
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sudo firewall-cmd --permanent --remove-service=cockpit
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sudo firewall-cmd --reload
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# Harden SSH
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mkdir -p /etc/ssh/ssh_config.d /etc/ssh/sshd_config.d
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echo 'GSSAPIAuthentication no
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VerifyHostKeyDNS yes' | 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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echo 'HostKey /etc/ssh/ssh_host_ed25519_key
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HostKeyAlgorithms ssh-ed25519
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#KexAlgorithms sntrup761x25519-sha512@openssh.com
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PubkeyAcceptedKeyTypes ssh-ed25519
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Ciphers aes256-gcm@openssh.com
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MACs -*
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PasswordAuthentication no
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PermitRootLogin no
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KerberosAuthentication no
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GSSAPIAuthentication no' | 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 curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf -o /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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# Kernel hardening
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sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf -o /etc/modprobe.d/30_security-misc.conf
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sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_security-misc.conf -o /etc/sysctl.d/30_security-misc.conf
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sudo sed -i 's/kernel.yama.ptrace_scope=2/kernel.yama.ptrace_scope=3/g' /etc/sysctl.d/30_security-misc.conf
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sudo sed -i 's/net.ipv4.icmp_echo_ignore_all=1/net.ipv4.icmp_echo_ignore_all=0/g' /etc/sysctl.d/30_security-misc.conf
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sudo sed -i 's/net.ipv6.icmp.echo_ignore_all=1/net.ipv6.icmp.echo_ignore_all=0/g' /etc/sysctl.d/30_security-misc.conf
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sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_silent-kernel-printk.conf -o /etc/sysctl.d/30_silent-kernel-printk.conf
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sudo curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_security-misc_kexec-disable.conf -o /etc/sysctl.d/30_security-misc_kexec-disable.conf
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sudo sysctl -p
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# Systemd hardening
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sudo mkdir -p /etc/systemd/system/NetworkManager.service.d
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sudo curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf -o /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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sudo mkdir -p /etc/systemd/system/irqbalance.service.d
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sudo curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/irqbalance.service.d/99-brace.conf -o /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 unbound
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sudo dnf install unbound -y
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echo 'server:
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chroot: ""
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auto-trust-anchor-file: "/var/lib/unbound/root.key"
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trust-anchor-signaling: yes
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root-key-sentinel: yes
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tls-ciphers: "PROFILE=SYSTEM"
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hide-http-user-agent: yes
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hide-identity: yes
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hide-trustanchor: yes
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hide-version: yes
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deny-any: yes
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harden-algo-downgrade: yes
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harden-large-queries: yes
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harden-referral-path: yes
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ignore-cd-flag: yes
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max-udp-size: 3072
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module-config: "validator iterator"
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qname-minimisation-strict: yes
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unwanted-reply-threshold: 10000000
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use-caps-for-id: yes
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outgoing-port-permit: 1024-65535
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prefetch: yes
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prefetch-key: yes
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forward-zone:
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name: "."
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forward-tls-upstream: yes
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forward-addr: 1.1.1.2@853#security.cloudflare-dns.com
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forward-addr: 1.0.0.2@853#security.cloudflare-dns.com
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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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mkdir -p /etc/systemd/system/unbound.service.d
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echo $'[Service]
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MemoryDenyWriteExecute=true
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PrivateDevices=true
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PrivateTmp=true
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ProtectHome=true
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ProtectClock=true
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ProtectControlGroups=true
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ProtectKernelLogs=true
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ProtectKernelModules=true
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# This breaks using socket options like \'so-rcvbuf\'. Explicitly disable for visibility.
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ProtectKernelTunables=true
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ProtectProc=invisible
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RestrictAddressFamilies=AF_INET AF_INET6 AF_NETLINK AF_UNIX
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RestrictRealtime=true
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SystemCallArchitectures=native
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SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module mount @obsolete @resources
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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 systemctl enable --now unbound
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# Setup yara
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sudo dnf install -y yara
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sudo insights-client --collector malware-detection
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sudo sed -i 's/test_scan: true/test_scan: false/' /etc/insights-client/malware-detection-config.yml
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# Setup automatic updates
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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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#Setup fwupd
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sudo dnf install fwupd -y
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mkdir -p /etc/systemd/system/fwupd-refresh.service.d
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echo '[Service]
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ExecStart=/usr/bin/fwupdmgr update' | tee /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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# Setup tuned
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sudo dnf install tuned -y
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sudo tuned-adm profile virtual-guest
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# Enable fstrim.timer
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sudo systemctl enable --now fstrim.timer |