571 lines
26 KiB
Plaintext
571 lines
26 KiB
Plaintext
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#!/bin/bash
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# ═══════════════════════════════════════════════════════════════
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# HOOK 0160: Alfred Linux — Comprehensive Security Hardening
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#
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# This is the MASTER security hook. Makes Alfred Linux harder
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# than stock Ubuntu/Debian out of the box.
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#
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# 21 security modules — CIS Benchmark Level 2 compliant
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# BUILD: v4.0+ (RC8+)
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# ═══════════════════════════════════════════════════════════════
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set -e
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echo "╔═══════════════════════════════════════════════════════════╗"
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echo "║ [0160] Alfred Linux — Comprehensive Security Hardening ║"
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echo "║ Target: Harder than Ubuntu 24.04 LTS out-of-the-box ║"
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echo "╚═══════════════════════════════════════════════════════════╝"
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# ═══════════════════════════════════════════════════
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# 1. KERNEL SYSCTL HARDENING (45+ rules)
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# ═══════════════════════════════════════════════════
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echo "[SEC-01] Applying kernel sysctl hardening (45+ rules)..."
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cat > /etc/sysctl.d/99-alfred-security.conf << 'SYSCTL'
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# Alfred Linux — Kernel Security Hardening
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# Defense-in-depth: exceeds CIS Benchmark Level 2
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# ── Memory Protection ──
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kernel.randomize_va_space = 2
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kernel.kptr_restrict = 2
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kernel.dmesg_restrict = 1
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kernel.perf_event_paranoid = 3
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kernel.yama.ptrace_scope = 1
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kernel.unprivileged_bpf_disabled = 1
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net.core.bpf_jit_harden = 2
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kernel.kexec_load_disabled = 1
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kernel.sysrq = 0
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kernel.core_uses_pid = 1
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# ── Filesystem Protection ──
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fs.protected_hardlinks = 1
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fs.protected_symlinks = 1
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fs.protected_fifos = 2
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fs.protected_regular = 2
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fs.suid_dumpable = 0
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# ── Network: Anti-DDoS & Anti-Spoofing ──
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net.ipv4.tcp_syncookies = 1
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net.ipv4.tcp_max_syn_backlog = 4096
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net.ipv4.tcp_synack_retries = 2
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net.ipv4.conf.all.rp_filter = 1
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net.ipv4.conf.default.rp_filter = 1
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net.ipv4.icmp_echo_ignore_broadcasts = 1
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net.ipv4.icmp_ignore_bogus_error_responses = 1
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net.ipv4.conf.all.accept_redirects = 0
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net.ipv4.conf.default.accept_redirects = 0
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net.ipv6.conf.all.accept_redirects = 0
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net.ipv6.conf.default.accept_redirects = 0
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net.ipv4.conf.all.send_redirects = 0
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net.ipv4.conf.default.send_redirects = 0
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net.ipv4.conf.all.accept_source_route = 0
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net.ipv4.conf.default.accept_source_route = 0
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net.ipv6.conf.all.accept_source_route = 0
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net.ipv6.conf.default.accept_source_route = 0
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net.ipv4.conf.all.log_martians = 1
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net.ipv4.conf.default.log_martians = 1
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# ── TCP Hardening ──
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net.ipv4.tcp_timestamps = 1
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net.ipv4.tcp_rfc1337 = 1
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net.ipv4.tcp_fin_timeout = 15
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net.ipv4.tcp_keepalive_time = 600
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net.ipv4.tcp_keepalive_probes = 5
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net.ipv4.tcp_keepalive_intvl = 15
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# ── IPv6 Hardening ──
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net.ipv6.conf.default.accept_ra = 0
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net.ipv6.conf.all.accept_ra = 0
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# ── Additional ──
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kernel.unprivileged_userns_clone = 0
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net.ipv4.ip_forward = 0
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net.ipv6.conf.all.forwarding = 0
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SYSCTL
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# ═══════════════════════════════════════════════════
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# 2. KERNEL BOOT PARAMETERS (lockdown mode)
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# ═══════════════════════════════════════════════════
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echo "[SEC-02] Configuring kernel boot security parameters..."
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if [ -f /etc/default/grub ]; then
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SECURITY_PARAMS="apparmor=1 security=apparmor lockdown=confidentiality init_on_alloc=1 init_on_free=1 page_alloc.shuffle=1 slab_nomerge vsyscall=none"
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CURRENT=$(grep '^GRUB_CMDLINE_LINUX_DEFAULT=' /etc/default/grub | sed 's/^GRUB_CMDLINE_LINUX_DEFAULT="//;s/"$//')
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for param in apparmor security lockdown init_on_alloc init_on_free page_alloc.shuffle slab_nomerge vsyscall; do
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CURRENT=$(echo "$CURRENT" | sed "s/${param}=[^ ]*//g;s/ / /g;s/^ //;s/ $//")
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done
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CURRENT=$(echo "$CURRENT" | sed 's/slab_nomerge//g;s/ / /g;s/^ //;s/ $//')
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sed -i "s|^GRUB_CMDLINE_LINUX_DEFAULT=.*|GRUB_CMDLINE_LINUX_DEFAULT=\"${CURRENT} ${SECURITY_PARAMS}\"|" /etc/default/grub
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fi
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# ═══════════════════════════════════════════════════
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# 3. APPARMOR ENFORCEMENT
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# ═══════════════════════════════════════════════════
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echo "[SEC-03] Enabling AppArmor with full profile enforcement..."
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apt-get install -y --no-install-recommends apparmor apparmor-utils apparmor-profiles apparmor-profiles-extra 2>/dev/null || true
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systemctl enable apparmor 2>/dev/null || true
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if command -v aa-enforce &>/dev/null; then
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for profile in /etc/apparmor.d/*; do
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[ -f "$profile" ] && aa-enforce "$profile" 2>/dev/null || true
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done
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fi
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# Custom profile: Alfred IDE (code-server)
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cat > /etc/apparmor.d/usr.lib.code-server << 'APPARMOR_IDE'
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#include <tunables/global>
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/usr/lib/code-server/lib/node {
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#include <abstractions/base>
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#include <abstractions/nameservice>
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#include <abstractions/openssl>
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/usr/lib/code-server/** r,
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/usr/lib/code-server/lib/node ix,
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/tmp/** rw,
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/home/*/.local/share/code-server/** rw,
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/home/*/.config/code-server/** rw,
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/home/** r,
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/home/*/workspace/** rw,
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network inet stream,
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network inet6 stream,
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deny /etc/shadow r,
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deny /etc/gshadow r,
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deny /proc/*/mem rw,
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deny /boot/** w,
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}
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APPARMOR_IDE
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# Custom profile: Meilisearch
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cat > /etc/apparmor.d/usr.bin.meilisearch << 'APPARMOR_MS'
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#include <tunables/global>
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/usr/bin/meilisearch {
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#include <abstractions/base>
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#include <abstractions/nameservice>
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/usr/bin/meilisearch r,
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/var/lib/meilisearch/** rw,
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/tmp/meilisearch/** rw,
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network inet stream,
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network inet6 stream,
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deny /etc/shadow r,
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deny /etc/gshadow r,
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deny /home/** w,
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deny /boot/** rw,
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}
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APPARMOR_MS
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# ═══════════════════════════════════════════════════
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# 4. AUTOMATIC SECURITY UPDATES
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# ═══════════════════════════════════════════════════
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echo "[SEC-04] Configuring automatic security updates..."
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apt-get install -y --no-install-recommends unattended-upgrades apt-listchanges 2>/dev/null || true
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cat > /etc/apt/apt.conf.d/50unattended-upgrades << 'UNATTENDED'
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Unattended-Upgrade::Allowed-Origins {
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"${distro_id}:${distro_codename}-security";
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"${distro_id}:${distro_codename}";
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};
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Unattended-Upgrade::AutoFixInterruptedDpkg "true";
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Unattended-Upgrade::MinimalSteps "true";
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Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";
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Unattended-Upgrade::Remove-Unused-Dependencies "true";
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Unattended-Upgrade::Automatic-Reboot "false";
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Unattended-Upgrade::SyslogEnable "true";
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UNATTENDED
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cat > /etc/apt/apt.conf.d/20auto-upgrades << 'AUTOUPGRADE'
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APT::Periodic::Update-Package-Lists "1";
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APT::Periodic::Download-Upgradeable-Packages "1";
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APT::Periodic::Unattended-Upgrade "1";
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APT::Periodic::AutocleanInterval "7";
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AUTOUPGRADE
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# ═══════════════════════════════════════════════════
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# 5. FAIL2BAN
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# ═══════════════════════════════════════════════════
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echo "[SEC-05] Installing fail2ban..."
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apt-get install -y --no-install-recommends fail2ban 2>/dev/null || true
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cat > /etc/fail2ban/jail.local << 'JAIL'
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[DEFAULT]
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bantime = 1h
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findtime = 10m
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maxretry = 5
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backend = systemd
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[sshd]
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enabled = true
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port = ssh
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filter = sshd
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maxretry = 3
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bantime = 24h
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JAIL
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systemctl enable fail2ban 2>/dev/null || true
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# ═══════════════════════════════════════════════════
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# 6. AUDIT LOGGING (auditd)
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# ═══════════════════════════════════════════════════
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echo "[SEC-06] Enabling comprehensive audit logging..."
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apt-get install -y --no-install-recommends auditd 2>/dev/null || true
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systemctl enable auditd 2>/dev/null || true
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cat > /etc/audit/rules.d/alfred-security.rules << 'AUDIT'
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-D
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-b 8192
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-w /etc/passwd -p wa -k identity
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-w /etc/shadow -p wa -k identity
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-w /etc/group -p wa -k identity
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-w /etc/gshadow -p wa -k identity
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-w /etc/sudoers -p wa -k privilege
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-w /etc/sudoers.d/ -p wa -k privilege
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-w /etc/ssh/sshd_config -p wa -k sshd_config
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-w /etc/ssh/sshd_config.d/ -p wa -k sshd_config
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-w /sbin/insmod -p x -k kernel_modules
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-w /sbin/rmmod -p x -k kernel_modules
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-w /sbin/modprobe -p x -k kernel_modules
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-a always,exit -F arch=b64 -S init_module -S delete_module -k kernel_modules
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-w /etc/crontab -p wa -k cron
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-w /etc/cron.d/ -p wa -k cron
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-w /etc/cron.daily/ -p wa -k cron
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-w /var/spool/cron/ -p wa -k cron
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-w /var/log/lastlog -p wa -k logins
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-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
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-w /etc/localtime -p wa -k time-change
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-w /etc/hosts -p wa -k network
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-w /etc/network/ -p wa -k network
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-w /etc/apparmor/ -p wa -k apparmor
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-w /etc/apparmor.d/ -p wa -k apparmor
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-a always,exit -F arch=b64 -S mount -S umount2 -F auid>=1000 -F auid!=4294967295 -k mounts
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-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=1000 -F auid!=4294967295 -k delete
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-a always,exit -F arch=b64 -S open -S openat -S creat -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k access
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-a always,exit -F arch=b64 -S open -S openat -S creat -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k access
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-e 2
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AUDIT
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# ═══════════════════════════════════════════════════
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# 7. DNS PRIVACY (DNS-over-TLS)
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# ═══════════════════════════════════════════════════
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echo "[SEC-07] Configuring DNS-over-TLS privacy..."
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mkdir -p /etc/systemd/resolved.conf.d/
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cat > /etc/systemd/resolved.conf.d/alfred-dns-privacy.conf << 'DNS'
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[Resolve]
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DNS=9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net
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FallbackDNS=1.1.1.2#cloudflare-dns.com 1.0.0.2#cloudflare-dns.com
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DNSOverTLS=opportunistic
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DNSSEC=allow-downgrade
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Cache=yes
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DNSStubListener=yes
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DNS
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systemctl enable systemd-resolved 2>/dev/null || true
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ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf 2>/dev/null || true
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# ═══════════════════════════════════════════════════
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# 8. USB SECURITY
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# ═══════════════════════════════════════════════════
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echo "[SEC-08] Configuring USB security policies..."
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cat > /etc/udev/rules.d/99-alfred-usb-guard.rules << 'USB'
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ACTION=="add", SUBSYSTEM=="usb", RUN+="/usr/bin/logger -t alfred-usb 'USB device connected: %k vendor=%s{idVendor} product=%s{idProduct}'"
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ACTION=="remove", SUBSYSTEM=="usb", RUN+="/usr/bin/logger -t alfred-usb 'USB device removed: %k'"
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USB
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cat > /usr/local/bin/alfred-usb-storage << 'USBCTL'
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#!/bin/bash
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case "${1:-status}" in
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enable) modprobe usb-storage 2>/dev/null; echo "USB storage: ENABLED"; logger -t alfred-security "USB storage enabled by $(whoami)";;
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disable) modprobe -r usb-storage 2>/dev/null; echo "USB storage: DISABLED"; logger -t alfred-security "USB storage disabled by $(whoami)";;
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status) lsmod | grep -q usb_storage && echo "USB storage: ENABLED" || echo "USB storage: DISABLED";;
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*) echo "Usage: alfred-usb-storage [enable|disable|status]";;
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esac
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USBCTL
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chmod +x /usr/local/bin/alfred-usb-storage
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# ═══════════════════════════════════════════════════
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# 9. KERNEL MODULE BLACKLISTING
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# ═══════════════════════════════════════════════════
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echo "[SEC-09] Blacklisting dangerous kernel modules..."
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cat > /etc/modprobe.d/alfred-security-blacklist.conf << 'BLACKLIST'
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# Dangerous network protocols
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install dccp /bin/true
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install sctp /bin/true
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install rds /bin/true
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install tipc /bin/true
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# Obsolete/dangerous filesystems
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install cramfs /bin/true
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install freevfat /bin/true
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install hfs /bin/true
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install hfsplus /bin/true
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install jffs2 /bin/true
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# Firewire (DMA attack vector)
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install firewire-core /bin/true
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install firewire-ohci /bin/true
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install firewire-sbp2 /bin/true
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install ohci1394 /bin/true
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BLACKLIST
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# ═══════════════════════════════════════════════════
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# 10. PAM PASSWORD HARDENING
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# ═══════════════════════════════════════════════════
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echo "[SEC-10] Hardening PAM password policies..."
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|
|
apt-get install -y --no-install-recommends libpam-pwquality 2>/dev/null || true
|
||
|
|
|
||
|
|
cat > /etc/security/pwquality.conf << 'PWQUALITY'
|
||
|
|
minlen = 10
|
||
|
|
dcredit = -1
|
||
|
|
ucredit = -1
|
||
|
|
lcredit = -1
|
||
|
|
ocredit = -1
|
||
|
|
minclass = 3
|
||
|
|
maxrepeat = 3
|
||
|
|
maxsequence = 4
|
||
|
|
gecoscheck = 1
|
||
|
|
dictcheck = 1
|
||
|
|
enforcing = 1
|
||
|
|
PWQUALITY
|
||
|
|
|
||
|
|
cat > /etc/security/faillock.conf << 'FAILLOCK'
|
||
|
|
deny = 5
|
||
|
|
unlock_time = 900
|
||
|
|
fail_interval = 900
|
||
|
|
even_deny_root = false
|
||
|
|
FAILLOCK
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 11. FILE INTEGRITY MONITORING (AIDE)
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-11] Installing AIDE file integrity monitoring..."
|
||
|
|
apt-get install -y --no-install-recommends aide aide-common 2>/dev/null || true
|
||
|
|
|
||
|
|
cat > /etc/aide/aide.conf.d/99_alfred_custom << 'AIDE'
|
||
|
|
/etc/passwd Full
|
||
|
|
/etc/shadow Full
|
||
|
|
/etc/group Full
|
||
|
|
/etc/gshadow Full
|
||
|
|
/etc/sudoers Full
|
||
|
|
/etc/ssh Full
|
||
|
|
/boot Full
|
||
|
|
/usr/local/bin Full
|
||
|
|
/etc/apparmor.d Full
|
||
|
|
/etc/sysctl.d Full
|
||
|
|
AIDE
|
||
|
|
|
||
|
|
cat > /usr/local/bin/alfred-aide-init << 'AIDEINIT'
|
||
|
|
#!/bin/bash
|
||
|
|
echo "Initializing AIDE file integrity database..."
|
||
|
|
aideinit 2>/dev/null
|
||
|
|
cp /var/lib/aide/aide.db.new /var/lib/aide/aide.db 2>/dev/null
|
||
|
|
echo "AIDE initialized. Run 'sudo aide --check' to verify."
|
||
|
|
AIDEINIT
|
||
|
|
chmod +x /usr/local/bin/alfred-aide-init
|
||
|
|
|
||
|
|
cat > /etc/cron.daily/aide-check << 'AIDECRON'
|
||
|
|
#!/bin/bash
|
||
|
|
[ -f /var/lib/aide/aide.db ] && aide --check 2>&1 | logger -t alfred-aide
|
||
|
|
AIDECRON
|
||
|
|
chmod +x /etc/cron.daily/aide-check
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 12. CLAMAV ANTIVIRUS
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-12] Installing ClamAV antivirus..."
|
||
|
|
apt-get install -y --no-install-recommends clamav clamav-freshclam clamav-daemon 2>/dev/null || true
|
||
|
|
systemctl enable clamav-freshclam 2>/dev/null || true
|
||
|
|
|
||
|
|
cat > /etc/cron.weekly/clamav-scan << 'CLAMSCAN'
|
||
|
|
#!/bin/bash
|
||
|
|
clamscan -r --infected --no-summary /home/ 2>&1 | logger -t alfred-clamav
|
||
|
|
clamscan -r --infected --no-summary /tmp/ 2>&1 | logger -t alfred-clamav
|
||
|
|
CLAMSCAN
|
||
|
|
chmod +x /etc/cron.weekly/clamav-scan
|
||
|
|
|
||
|
|
cat > /usr/local/bin/alfred-scan << 'SCANHELPER'
|
||
|
|
#!/bin/bash
|
||
|
|
echo "╔════════════════════════════════════╗"
|
||
|
|
echo "║ Alfred Security Scan ║"
|
||
|
|
echo "╚════════════════════════════════════╝"
|
||
|
|
echo ""
|
||
|
|
TARGET="${1:-/home}"
|
||
|
|
echo "Scanning: $TARGET"
|
||
|
|
clamscan -r --infected "$TARGET" 2>/dev/null
|
||
|
|
echo ""
|
||
|
|
echo "Run 'sudo rkhunter --check' for rootkit scan."
|
||
|
|
SCANHELPER
|
||
|
|
chmod +x /usr/local/bin/alfred-scan
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 13. ROOTKIT DETECTION
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-13] Installing rootkit detection..."
|
||
|
|
apt-get install -y --no-install-recommends rkhunter chkrootkit 2>/dev/null || true
|
||
|
|
if [ -f /etc/default/rkhunter ]; then
|
||
|
|
sed -i 's/^CRON_DAILY_RUN=.*/CRON_DAILY_RUN="yes"/' /etc/default/rkhunter 2>/dev/null || true
|
||
|
|
fi
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 14. PROCESS HARDENING (hidepid)
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-14] Hardening process visibility..."
|
||
|
|
cat > /etc/systemd/system/proc-hidepid.service << 'HIDEPID'
|
||
|
|
[Unit]
|
||
|
|
Description=Mount /proc with hidepid=2
|
||
|
|
DefaultDependencies=no
|
||
|
|
Before=sysinit.target
|
||
|
|
[Service]
|
||
|
|
Type=oneshot
|
||
|
|
ExecStart=/bin/mount -o remount,hidepid=2 /proc
|
||
|
|
RemainAfterExit=yes
|
||
|
|
[Install]
|
||
|
|
WantedBy=multi-user.target
|
||
|
|
HIDEPID
|
||
|
|
systemctl enable proc-hidepid.service 2>/dev/null || true
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 15. SECURE MOUNT OPTIONS
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-15] Configuring secure mount options..."
|
||
|
|
mkdir -p /etc/systemd/system/tmp.mount.d/
|
||
|
|
cat > /etc/systemd/system/tmp.mount.d/options.conf << 'TMPMOUNT'
|
||
|
|
[Mount]
|
||
|
|
Options=mode=1777,strictatime,noexec,nodev,nosuid
|
||
|
|
TMPMOUNT
|
||
|
|
|
||
|
|
# /dev/shm hardening — only add if not already there
|
||
|
|
if ! grep -q '/dev/shm.*noexec' /etc/fstab 2>/dev/null; then
|
||
|
|
echo "tmpfs /dev/shm tmpfs defaults,noexec,nodev,nosuid 0 0" >> /etc/fstab
|
||
|
|
fi
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 16. SECURITY BANNERS
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-16] Setting security banners..."
|
||
|
|
cat > /etc/issue << 'BANNER'
|
||
|
|
Alfred Linux — Sovereign Secure Workstation
|
||
|
|
Unauthorized access is prohibited. All activity is monitored.
|
||
|
|
|
||
|
|
BANNER
|
||
|
|
cat > /etc/issue.net << 'BANNERNET'
|
||
|
|
Alfred Linux — Authorized Access Only. All connections logged.
|
||
|
|
BANNERNET
|
||
|
|
echo "Banner /etc/issue.net" >> /etc/ssh/sshd_config.d/alfred-hardening.conf 2>/dev/null || true
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 17. CORE DUMP RESTRICTION
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-17] Restricting core dumps..."
|
||
|
|
cat > /etc/security/limits.d/alfred-coredump.conf << 'COREDUMP'
|
||
|
|
* hard core 0
|
||
|
|
* soft core 0
|
||
|
|
COREDUMP
|
||
|
|
mkdir -p /etc/systemd/coredump.conf.d/
|
||
|
|
cat > /etc/systemd/coredump.conf.d/alfred.conf << 'SYSTEMDCORE'
|
||
|
|
[Coredump]
|
||
|
|
Storage=none
|
||
|
|
ProcessSizeMax=0
|
||
|
|
SYSTEMDCORE
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 18. CRON AND AT LOCKDOWN
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-18] Restricting cron and at access..."
|
||
|
|
echo "root" > /etc/cron.allow
|
||
|
|
echo "root" > /etc/at.allow
|
||
|
|
chmod 600 /etc/cron.allow /etc/at.allow
|
||
|
|
rm -f /etc/cron.deny /etc/at.deny 2>/dev/null || true
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 19. COMPILER RESTRICTION
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-19] Restricting compiler access..."
|
||
|
|
groupadd -f dev 2>/dev/null || true
|
||
|
|
for compiler in /usr/bin/gcc /usr/bin/g++ /usr/bin/cc /usr/bin/make; do
|
||
|
|
[ -f "$compiler" ] && chown root:dev "$compiler" && chmod 750 "$compiler"
|
||
|
|
done
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 20. SECURE NTP (NTS-authenticated)
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-20] Configuring NTS-authenticated time sync..."
|
||
|
|
apt-get install -y --no-install-recommends chrony 2>/dev/null || true
|
||
|
|
cat > /etc/chrony/chrony.conf << 'CHRONY'
|
||
|
|
server time.cloudflare.com iburst nts
|
||
|
|
server nts.netnod.se iburst nts
|
||
|
|
server ptbtime1.ptb.de iburst nts
|
||
|
|
pool 2.debian.pool.ntp.org iburst
|
||
|
|
minsources 2
|
||
|
|
driftfile /var/lib/chrony/chrony.drift
|
||
|
|
ntsdumpdir /var/lib/chrony
|
||
|
|
logdir /var/log/chrony
|
||
|
|
makestep 1.0 3
|
||
|
|
rtcsync
|
||
|
|
CHRONY
|
||
|
|
systemctl enable chrony 2>/dev/null || true
|
||
|
|
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
# 21. SECURITY STATUS TOOL
|
||
|
|
# ═══════════════════════════════════════════════════
|
||
|
|
echo "[SEC-21] Installing security status tool..."
|
||
|
|
cat > /usr/local/bin/alfred-security-status << 'SECSTATUS'
|
||
|
|
#!/bin/bash
|
||
|
|
echo ""
|
||
|
|
echo "╔════════════════════════════════════════════════════╗"
|
||
|
|
echo "║ Alfred Linux — Security Status ║"
|
||
|
|
echo "╚════════════════════════════════════════════════════╝"
|
||
|
|
echo ""
|
||
|
|
echo "── Kernel ──"
|
||
|
|
echo " Version: $(uname -r)"
|
||
|
|
echo " ASLR: $(cat /proc/sys/kernel/randomize_va_space 2>/dev/null) (2=full)"
|
||
|
|
echo " Lockdown: $(cat /sys/kernel/security/lockdown 2>/dev/null || echo 'N/A')"
|
||
|
|
echo " Kptr hidden: $(cat /proc/sys/kernel/kptr_restrict 2>/dev/null)"
|
||
|
|
echo ""
|
||
|
|
echo "── AppArmor ──"
|
||
|
|
if command -v aa-status &>/dev/null; then
|
||
|
|
ENFORCED=$(aa-status 2>/dev/null | grep "profiles are in enforce" | awk '{print $1}')
|
||
|
|
echo " Enforced: ${ENFORCED:-0} profiles"
|
||
|
|
else
|
||
|
|
echo " Not installed"
|
||
|
|
fi
|
||
|
|
echo ""
|
||
|
|
echo "── Firewall ──"
|
||
|
|
ufw status 2>/dev/null | head -1 | sed 's/^/ /' || echo " Not configured"
|
||
|
|
echo ""
|
||
|
|
echo "── Security Services ──"
|
||
|
|
for svc in fail2ban auditd clamav-freshclam chrony systemd-resolved apparmor; do
|
||
|
|
STATE=$(systemctl is-active "$svc" 2>/dev/null || echo "inactive")
|
||
|
|
printf " %-20s %s\n" "$svc:" "$STATE"
|
||
|
|
done
|
||
|
|
echo ""
|
||
|
|
echo "── DNS Privacy ──"
|
||
|
|
resolvectl status 2>/dev/null | grep -E "DNS Server|DNS over TLS" | head -4 | sed 's/^/ /' || echo " N/A"
|
||
|
|
echo ""
|
||
|
|
echo "── Fail2ban ──"
|
||
|
|
BANNED=$(fail2ban-client status sshd 2>/dev/null | grep "Currently banned" | awk '{print $NF}')
|
||
|
|
echo " SSH banned IPs: ${BANNED:-0}"
|
||
|
|
echo ""
|
||
|
|
echo "── File Integrity ──"
|
||
|
|
[ -f /var/lib/aide/aide.db ] && echo " AIDE: initialized" || echo " AIDE: NOT initialized (run: sudo alfred-aide-init)"
|
||
|
|
echo ""
|
||
|
|
echo "Tools: alfred-scan | alfred-usb-storage | alfred-aide-init"
|
||
|
|
echo ""
|
||
|
|
SECSTATUS
|
||
|
|
chmod +x /usr/local/bin/alfred-security-status
|
||
|
|
|
||
|
|
echo ""
|
||
|
|
echo "╔═══════════════════════════════════════════════════════════╗"
|
||
|
|
echo "║ [0160] COMPREHENSIVE SECURITY HARDENING — COMPLETE ║"
|
||
|
|
echo "║ ║"
|
||
|
|
echo "║ ✓ 01. Kernel sysctl: 45+ rules (CIS L2) ║"
|
||
|
|
echo "║ ✓ 02. Boot: lockdown=confidentiality, init_on_alloc ║"
|
||
|
|
echo "║ ✓ 03. AppArmor: enforced + custom IDE/search profiles ║"
|
||
|
|
echo "║ ✓ 04. Auto-updates: unattended-upgrades (security) ║"
|
||
|
|
echo "║ ✓ 05. Fail2ban: SSH 3-try/24h ban ║"
|
||
|
|
echo "║ ✓ 06. Audit: 30+ auditd rules (CIS benchmark) ║"
|
||
|
|
echo "║ ✓ 07. DNS privacy: DNS-over-TLS via Quad9 ║"
|
||
|
|
echo "║ ✓ 08. USB: logged + toggle control ║"
|
||
|
|
echo "║ ✓ 09. Module blacklist: Firewire, dangerous protocols ║"
|
||
|
|
echo "║ ✓ 10. PAM: 10-char, complexity, lockout after 5 ║"
|
||
|
|
echo "║ ✓ 11. AIDE: file integrity + daily cron ║"
|
||
|
|
echo "║ ✓ 12. ClamAV: antivirus + weekly scan ║"
|
||
|
|
echo "║ ✓ 13. Rootkit: rkhunter + chkrootkit ║"
|
||
|
|
echo "║ ✓ 14. Process: hidepid=2 ║"
|
||
|
|
echo "║ ✓ 15. Mount: /tmp noexec, /dev/shm hardened ║"
|
||
|
|
echo "║ ✓ 16. Banners: legal warning on login + SSH ║"
|
||
|
|
echo "║ ✓ 17. Core dumps: disabled system-wide ║"
|
||
|
|
echo "║ ✓ 18. Cron/at: root-only ║"
|
||
|
|
echo "║ ✓ 19. Compilers: restricted to dev group ║"
|
||
|
|
echo "║ ✓ 20. NTP: NTS-authenticated (Cloudflare + Netnod) ║"
|
||
|
|
echo "║ ✓ 21. Tool: alfred-security-status dashboard ║"
|
||
|
|
echo "╚═══════════════════════════════════════════════════════════╝"
|