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Some security settings from the Arch Wiki

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These would be nice to have out of the box, especially with ptrace completely disabled.
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TommyTran732 2021-04-15 07:14:22 -04:00 • committed by GitHub
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commit db155c2c6b
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easy-arch.sh
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@ -190,6 +190,26 @@ arch-chroot /mnt /bin/bash -e <<EOF
EOF
#Security kernel settings
sudo bash -c 'cat > /mnt/etc/sysctl.d/51-dmesg-restrict.conf' <<-'EOF'
kernel.dmesg_restrict = 1
EOF
sudo bash -c 'cat > /mnt/etc/sysctl.d/51-kptr-restrict.conf' <<-'EOF'
kernel.kptr_restrict = 2
EOF
sudo bash -c 'cat > /mnt/etc/sysctl.d/51-kexec-restrict.conf' <<-'EOF'
kernel.kexec_load_disabled = 1
EOF
sudo bash -c 'cat > /mnt/etc/sysctl.d/10-security.conf' <<-'EOF'
fs.protected_hardlinks = 1
fs.protected_symlinks = 1
net.core.bpf_jit_harden = 2
kernel.yama.ptrace_scope = 3
EOF
# Setting root password.
echo "Setting root password."
arch-chroot /mnt /bin/passwd