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Add comprehensive authentik documentation and improve role configuration

Browse Source 
- Add authentik-deployment-guide.md: Complete step-by-step deployment guide
- Add architecture-decisions.md: Document native DB vs containerized rationale
- Add authentication-architecture.md: SSO strategy and integration patterns
- Update deployment-guide.md: Integrate authentik deployment procedures
- Update security-hardening.md: Add multi-layer security documentation
- Update service-integration-guide.md: Add authentik integration examples
- Update README.md: Professional project overview with architecture benefits
- Update authentik role: Fix HTTP binding, add security configs, improve templates
- Remove unused authentik task files: containers.yml, networking.yml

Key improvements:
* Document security benefits of native databases over containers
* Document Unix socket IPC architecture advantages
* Provide comprehensive troubleshooting and deployment procedures
* Add forward auth integration patterns for services
* Fix authentik HTTP binding from 127.0.0.1 to 0.0.0.0
* Add shared memory and IPC security configurations
This commit is contained in:
Joakim
2025-12-11 19:38:11 +01:00
parent bf53700b7e
commit 9e570ac2a3
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# Securing the VPS
## Network Security
- **SSH Hardening**: Password authentication disabled, root login disabled, key-only authentication
- **Firewall Configuration**: UFW with deny-all incoming, allow-all outgoing defaults
- **Fail2ban**: SSH brute-force protection with configurable ban times
- **Kernel Network Hardening**: IP forwarding disabled, source routing blocked, ICMP redirects disabled
# Security Hardening Guide
Comprehensive security hardening for rick-infra, implementing defense-in-depth with network, container, database, and application security layers.
## Security Architecture Overview
```
┌─────────────────────────────────────────────────────────────────┐
│ rick-infra Security Architecture (Defense in Depth) │
│ │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ Layer 1: Network Security │ │
│ │ • SSH Hardening • Firewall • Fail2ban • TLS/HTTPS │ │
│ └─────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ Layer 2: Authentication & Authorization │ │
│ │ • Authentik SSO • MFA • Forward Auth • Policy Engine │ │
│ └─────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ Layer 3: Container Security │ │
│ │ • Rootless Podman • User Namespaces • Capabilities │ │
│ │ • SELinux • Resource Limits • Security Labels │ │
│ └─────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ Layer 4: Database & Cache Security │ │
│ │ • Unix Sockets Only • No Network Exposure • Group ACLs │ │
│ │ • Encrypted Storage • Backup Security • Access Logging │ │
│ └─────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ ┌─────────────────────────────────────────────────────────────┐ │
│ │ Layer 5: Application Security │ │
│ │ • Secret Management • Secure Headers • Audit Logging │ │
│ │ • Input Validation • Session Security • CSRF Protection │ │
│ └─────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────┘
```
## Layer 1: Network Security
### SSH Hardening
#### Configuration Applied by Security Role
```yaml
# SSH hardening settings
sshd_config:
# Authentication Security
PasswordAuthentication: no
ChallengeResponseAuthentication: no
PermitRootLogin: no
PubkeyAuthentication: yes
AuthenticationMethods: "publickey"
# Protocol Security
Protocol: 2
PermitEmptyPasswords: no
MaxAuthTries: 3
LoginGraceTime: 60
# Connection Security
X11Forwarding: no
AllowAgentForwarding: no
AllowTcpForwarding: no
PermitTunnel: no
# Session Security
ClientAliveInterval: 300
ClientAliveCountMax: 2
MaxSessions: 2
MaxStartups: "2:30:10"
```
#### Verification Commands
```bash
# Verify SSH hardening
ssh root@your-vps "sshd -T | grep -E '(passwordauth|rootlogin|pubkey)'"
# Test SSH security
ssh-audit your-vps # External tool for SSH security assessment
# Monitor SSH attempts
ssh root@your-vps "journalctl -u sshd | grep -i 'failed\|invalid'"
```
### Firewall Configuration
#### nftables Firewall Rules
```bash
# Deployed firewall configuration
table inet filter {
chain input {
type filter hook input priority 0; policy drop;
# Allow loopback traffic
iifname "lo" accept
# Allow established connections
ct state established,related accept
# Allow SSH (rate limited)
tcp dport 22 ct state new limit rate 5/minute accept
# Allow HTTP/HTTPS
tcp dport {80, 443} accept
# Allow ICMP (rate limited)
icmp type echo-request limit rate 1/second accept
# Log dropped packets
log prefix "DROPPED: " drop
}
chain forward {
type filter hook forward priority 0; policy drop;
}
chain output {
type filter hook output priority 0; policy accept;
}
}
```
#### Firewall Management
```bash
# Check firewall status
ssh root@your-vps "nft list ruleset"
# Monitor dropped connections
ssh root@your-vps "journalctl -k | grep DROPPED"
# Temporary rule addition (emergency access)
ssh root@your-vps "nft add rule inet filter input tcp dport 8080 accept"
```
### Intrusion Detection (fail2ban)
#### fail2ban Configuration
```ini
# SSH protection jail
[sshd]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 3
findtime = 600
bantime = 3600
backend = systemd
# HTTP brute force protection
[caddy-auth]
enabled = true
port = http,https
filter = caddy-auth
logpath = /var/log/caddy/access.log
maxretry = 10
findtime = 600
bantime = 1800
# Authentik protection
[authentik-auth]
enabled = true
port = http,https
filter = authentik-auth
logpath = /opt/authentik/logs/server.log
maxretry = 5
findtime = 300
bantime = 3600
```
#### Intrusion Monitoring
```bash
# Check fail2ban status
ssh root@your-vps "fail2ban-client status"
ssh root@your-vps "fail2ban-client status sshd"
# View banned IPs
ssh root@your-vps "fail2ban-client get sshd banned"
# Unban IP (if needed)
ssh root@your-vps "fail2ban-client set sshd unbanip 203.0.113.100"
```
### TLS/HTTPS Security
#### Caddy TLS Configuration
```caddyfile
# Automatic HTTPS with security headers
(security_headers) {
header {
# HSTS (HTTP Strict Transport Security)
Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
# Content Security Policy
Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'"
# Additional security headers
X-Content-Type-Options "nosniff"
X-Frame-Options "DENY"
X-XSS-Protection "1; mode=block"
Referrer-Policy "strict-origin-when-cross-origin"
# Remove server information
-Server
}
}
# Apply to all sites
*.jnss.me {
import security_headers
tls {
protocols tls1.2 tls1.3
curves x25519 secp384r1
}
}
```
#### TLS Monitoring
```bash
# Check certificate status
curl -vI https://auth.jnss.me/ 2>&1 | grep -E "(certificate|expire|protocol)"
# Test TLS configuration
nmap --script ssl-enum-ciphers -p 443 your-domain.com
# Monitor certificate renewal
ssh root@your-vps "journalctl -u caddy | grep -i cert"
```
## Layer 2: Authentication & Authorization Security
### Authentik Security Configuration
#### Password Policy
```yaml
# Authentik password policy
password_policy:
length_min: 12
amount_lowercase: 1
amount_uppercase: 1
amount_digits: 1
amount_symbols: 1
password_field: "password"
check_static_rules: true
check_have_i_been_pwned: true
check_zxcvbn: true
zxcvbn_score_threshold: 3
```
#### Multi-Factor Authentication
```yaml
# MFA enforcement policies
mfa_policies:
- name: "Admin MFA Required"
bound_to: "group:admins"
authenticators: ["totp", "webauthn"]
enforce: true
- name: "Sensitive Services MFA"
bound_to: "application:admin_*"
authenticators: ["totp"]
enforce: true
- name: "External Access MFA"
bound_to: "source_ip:!10.0.0.0/8"
authenticators: ["totp", "sms"]
enforce: true
```
#### Session Security
```yaml
# Session security settings
session_security:
cookie_secure: true
cookie_httponly: true
cookie_samesite: "Strict"
session_timeout: 3600 # 1 hour
remember_me_timeout: 86400 # 24 hours
concurrent_sessions_limit: 3
session_fixation_protection: true
```
### Access Control Policies
#### Time-Based Access Control
```yaml
# Business hours access policy
policies:
- name: "Business Hours Only"
type: "time"
parameters:
start_time: "08:00"
end_time: "18:00"
days: ["monday", "tuesday", "wednesday", "thursday", "friday"]
timezone: "UTC"
applications: ["admin_dashboard", "financial_systems"]
```
#### IP-Based Access Control
```yaml
# Geographic/Network access restrictions
policies:
- name: "Office Network Only"
type: "source_ip"
parameters:
cidr: ["10.0.0.0/8", "192.168.0.0/16"]
applications: ["admin_*", "backup_*"]
- name: "Block High-Risk Countries"
type: "geoip"
parameters:
countries: ["CN", "RU", "KP"]
action: "deny"
applications: ["*"]
```
## Layer 3: Container Security
### Rootless Container Architecture
#### Security Benefits of Rootless Podman
```bash
# Rootless container verification
ssh root@your-vps "sudo -u authentik podman info | grep -A10 'security'"
# User namespace mapping
ssh root@your-vps "sudo -u authentik cat /proc/self/uid_map"
ssh root@your-vps "sudo -u authentik cat /proc/self/gid_map"
# Process tree verification (containers run as unprivileged user)
ssh root@your-vps "ps aux | grep -E '(authentik|gitea)'"
```
#### Container User Security
```ini
# Container configuration with security
[Container]
# Run as specific UID/GID (not root)
User=963:963
# Preserve supplementary groups for socket access
Annotation=run.oci.keep_original_groups=1
# Minimal capabilities
AddCapability=IPC_OWNER
DropCapability=ALL
# Security labels
SecurityLabelDisable=true
SecurityLabelType=container_t
```
### Container Isolation
#### Filesystem Security
```yaml
# Read-only root filesystem where possible
security_settings:
read_only_root_fs: true
temp_fs_mounts:
- "/tmp:rw,noexec,nosuid,size=100M"
- "/var/tmp:rw,noexec,nosuid,size=100M"
# Minimal volume mounts
volume_mounts:
- "/opt/authentik/data:/data:Z" # SELinux label
- "/opt/authentik/media:/media:Z"
- "/var/run/postgresql:/var/run/postgresql:Z"
- "/var/run/valkey:/var/run/valkey:Z"
```
#### Resource Limits
```ini
# systemd resource controls
[Service]
# Memory limits
MemoryMax=1G
MemorySwapMax=0
# CPU limits
CPUQuota=200% # 2 CPU cores max
# Process limits
TasksMax=100
LimitNOFILE=1024
# I/O limits
IODeviceWriteBandwidthMax=/dev/sda 50M
```
### SELinux Security
#### Container Labeling
```bash
# Verify SELinux labels on container volumes
ssh root@your-vps "ls -Z /var/run/postgresql/"
ssh root@your-vps "ls -Z /opt/authentik/"
# Check container SELinux context
ssh root@your-vps "sudo -u authentik podman exec authentik-server cat /proc/self/attr/current"
# SELinux audit logs
ssh root@your-vps "ausearch -m AVC -ts recent"
```
#### Custom SELinux Policies
```bash
# Generate custom SELinux policy for containers
ssh root@your-vps "audit2allow -a -m rick_containers"
# Apply custom policy
ssh root@your-vps "semodule -i rick_containers.pp"
```
## Layer 4: Database & Cache Security
### Unix Socket Security Model
#### Socket File Permissions
```bash
# Verify socket permissions
ssh root@your-vps "ls -la /var/run/postgresql/"
# Should show: srwxrwx--- postgres postgres .s.PGSQL.5432
ssh root@your-vps "ls -la /var/run/valkey/"
# Should show: srwxrwx--- valkey valkey valkey.sock
# Verify group access
ssh root@your-vps "groups authentik"
# Should include: postgres valkey
```
#### Network Isolation
```yaml
# Database configuration (no network exposure)
postgresql_config:
listen_addresses: '' # Unix sockets only
port: 0 # Disable TCP port
unix_socket_directories: '/var/run/postgresql'
unix_socket_permissions: 0770
valkey_config:
bind: '' # No network binding
port: 0 # Disable TCP port
unixsocket: '/var/run/valkey/valkey.sock'
unixsocketperm: 770
```
### Database Security Hardening
#### PostgreSQL Security
```sql
-- Database security configuration
-- Remove public schema permissions
REVOKE ALL ON SCHEMA public FROM PUBLIC;
-- Create application-specific schemas
CREATE SCHEMA authentik AUTHORIZATION authentik;
CREATE SCHEMA gitea AUTHORIZATION gitea;
-- Row-level security (if needed)
ALTER TABLE authentik.sensitive_data ENABLE ROW LEVEL SECURITY;
CREATE POLICY user_data_policy ON authentik.sensitive_data
FOR ALL TO authentik USING (user_id = current_setting('app.user_id'));
-- Audit logging
CREATE EXTENSION IF NOT EXISTS pgaudit;
ALTER SYSTEM SET pgaudit.log = 'all';
```
#### Database Access Monitoring
```bash
# Monitor database connections
ssh root@your-vps "sudo -u postgres psql -h /var/run/postgresql -c 'SELECT datname, usename, application_name, client_addr FROM pg_stat_activity;'"
# Check for suspicious queries
ssh root@your-vps "sudo -u postgres psql -h /var/run/postgresql -c 'SELECT query, query_start, state FROM pg_stat_activity WHERE state != '\''idle'\'';'"
# Review authentication logs
ssh root@your-vps "grep -i 'authentication\|connection' /var/log/postgresql/postgresql.log"
```
### Cache Security
#### Valkey/Redis Security Configuration
```bash
# Valkey security settings
CONFIG SET requirepass "strong_password"
CONFIG SET rename-command FLUSHDB ""
CONFIG SET rename-command FLUSHALL ""
CONFIG SET rename-command DEBUG ""
CONFIG SET rename-command CONFIG "CONFIG_b3a0f6c8"
# Disable dangerous commands
CONFIG SET protected-mode yes
CONFIG SET save "" # Disable automatic snapshots
```
#### Cache Access Control
```bash
# Verify cache authentication
ssh root@your-vps "redis-cli -s /var/run/valkey/valkey.sock -a \$VALKEY_PASSWORD ping"
# Monitor cache operations
ssh root@your-vps "redis-cli -s /var/run/valkey/valkey.sock -a \$VALKEY_PASSWORD monitor"
# Check cache configuration
ssh root@your-vps "redis-cli -s /var/run/valkey/valkey.sock -a \$VALKEY_PASSWORD CONFIG GET '*'"
```
## Layer 5: Application Security
### Secret Management
#### Ansible Vault Security
```yaml
# Vault encryption verification
vault_security:
encryption_method: "AES256"
key_derivation: "PBKDF2"
vault_password_source: "prompt" # Never store in files
# Vault best practices
vault_practices:
- rotate_vault_password: "quarterly"
- separate_vault_files: "by_environment"
- backup_encrypted_vaults: "securely"
- audit_vault_access: "regularly"
```
#### Environment Variable Security
```bash
# Verify secrets are not in process environment
ssh root@your-vps "sudo -u authentik cat /proc/\$(pgrep -f authentik-server)/environ | tr '\0' '\n' | grep -v SECRET"
# Check for secrets in logs
ssh root@your-vps "journalctl --user -M authentik@ -u authentik-server | grep -i 'password\|secret\|token'"
```
### Secure Headers and Middleware
#### Application-Level Security Headers
```python
# Example application security middleware
security_middleware = {
'SECURE_BROWSER_XSS_FILTER': True,
'SECURE_CONTENT_TYPE_NOSNIFF': True,
'SECURE_HSTS_SECONDS': 31536000,
'SECURE_HSTS_INCLUDE_SUBDOMAINS': True,
'SECURE_HSTS_PRELOAD': True,
'SECURE_REDIRECT_EXEMPT': [],
'SECURE_SSL_REDIRECT': True,
'SESSION_COOKIE_SECURE': True,
'SESSION_COOKIE_HTTPONLY': True,
'SESSION_COOKIE_SAMESITE': 'Strict',
'CSRF_COOKIE_SECURE': True,
'X_FRAME_OPTIONS': 'DENY'
}
```
#### Content Security Policy
```http
# Strict CSP for web applications
Content-Security-Policy: default-src 'self';
script-src 'self' 'unsafe-inline' https://cdn.example.com;
style-src 'self' 'unsafe-inline';
img-src 'self' data: https:;
font-src 'self' https://fonts.gstatic.com;
connect-src 'self' https://api.example.com;
frame-ancestors 'none';
base-uri 'self';
form-action 'self'
```
### Audit Logging and Monitoring
#### System-Wide Audit Configuration
```bash
# auditd configuration for security events
auditctl -w /etc/passwd -p wa -k user_modification
auditctl -w /etc/shadow -p wa -k password_modification
auditctl -w /opt/authentik -p wa -k authentik_access
auditctl -w /var/run/postgresql -p wa -k database_access
auditctl -w /var/run/valkey -p wa -k cache_access
# Monitor systemd service changes
auditctl -w /etc/systemd/system -p wa -k service_modification
auditctl -w /home/*/.*config/containers/systemd -p wa -k container_modification
```
#### Application Audit Logging
```yaml
# Application-level audit events
audit_events:
authentication:
- user_login_success
- user_login_failure
- password_change
- mfa_enrollment
- session_timeout
authorization:
- access_granted
- access_denied
- privilege_escalation
- policy_violation
data_access:
- sensitive_data_access
- data_export
- configuration_change
- backup_access
```
### Security Monitoring and Alerting
#### Real-Time Security Monitoring
```bash
# Security monitoring scripts
#!/bin/bash
# security-monitor.sh
# Monitor failed authentication attempts
FAILED_LOGINS=$(grep "Failed password" /var/log/auth.log | wc -l)
if [ $FAILED_LOGINS -gt 10 ]; then
echo "ALERT: High number of failed login attempts: $FAILED_LOGINS"
fi
# Monitor unusual database connections
DB_CONNECTIONS=$(sudo -u postgres psql -h /var/run/postgresql -t -c "SELECT count(*) FROM pg_stat_activity WHERE application_name NOT IN ('authentik', 'gitea');")
if [ $DB_CONNECTIONS -gt 5 ]; then
echo "ALERT: Unusual database connections: $DB_CONNECTIONS"
fi
# Monitor container security violations
SELINUX_VIOLATIONS=$(ausearch -m AVC -ts recent 2>/dev/null | wc -l)
if [ $SELINUX_VIOLATIONS -gt 0 ]; then
echo "ALERT: SELinux violations detected: $SELINUX_VIOLATIONS"
fi
```
#### Log Aggregation and Analysis
```yaml
# Log analysis configuration
log_analysis:
sources:
- /var/log/auth.log # SSH and system authentication
- /var/log/audit/audit.log # System audit events
- /opt/authentik/logs/ # Application logs
- /var/log/caddy/ # Web server logs
- /var/log/postgresql/ # Database logs
alerts:
- pattern: "Failed password.*from.*"
threshold: 5
timeframe: "5m"
action: "block_ip"
- pattern: "AUTHENTICATION_FAILED.*authentik"
threshold: 10
timeframe: "10m"
action: "alert_admin"
```
## Security Best Practices
### Regular Security Maintenance
#### Security Updates
```bash
# Automated security updates (weekly)
#!/bin/bash
# security-updates.sh
# System package updates
pacman -Syu --noconfirm
# Container image updates
for user in authentik gitea; do
sudo -u $user podman auto-update
done
# Certificate renewal check
systemctl reload caddy
# Restart services if security updates require it
if [ -f /var/run/reboot-required ]; then
systemctl reboot
fi
```
#### Security Auditing
```bash
# Monthly security audit checklist
#!/bin/bash
# security-audit.sh
echo "=== Security Audit Report $(date) ==="
# Check for unauthorized users
echo "Checking system users:"
awk -F: '$3 >= 1000 {print $1, $3}' /etc/passwd
# Check sudo access
echo "Checking sudo access:"
grep -v '^#' /etc/sudoers
# Check listening services
echo "Checking listening services:"
netstat -tulpn | grep LISTEN
# Check file permissions on critical files
echo "Checking critical file permissions:"
ls -la /etc/shadow /etc/passwd /etc/ssh/sshd_config
# Check for SUID/SGID files
echo "Checking SUID/SGID files:"
find /usr -perm /6000 -type f 2>/dev/null
# Check container security
echo "Checking container security:"
for user in authentik gitea; do
echo "User: $user"
sudo -u $user podman ps --format "table {{.Names}}\t{{.RunningFor}}\t{{.Status}}"
done
# Check database security
echo "Checking database connections:"
sudo -u postgres psql -h /var/run/postgresql -c "SELECT datname, usename, client_addr FROM pg_stat_activity;"
```
### Incident Response Procedures
#### Security Incident Response Plan
```yaml
incident_response:
detection:
- automated_alerts: "fail2ban, audit logs, monitoring"
- manual_review: "daily log review, weekly security audit"
assessment:
- severity_levels: ["low", "medium", "high", "critical"]
- response_time:
critical: "15 minutes"
high: "1 hour"
medium: "4 hours"
low: "24 hours"
containment:
- isolate_affected_systems: "fail2ban, iptables blocks"
- preserve_evidence: "log snapshots, memory dumps"
- maintain_operations: "failover procedures"
eradication:
- remove_threats: "malware removal, account cleanup"
- patch_vulnerabilities: "system updates, configuration fixes"
- strengthen_defenses: "additional monitoring, access controls"
recovery:
- restore_services: "service restart, data restoration"
- monitor_operations: "enhanced monitoring period"
- validate_security: "penetration testing, vulnerability scans"
```
#### Emergency Response Commands
```bash
# Emergency security response toolkit
#!/bin/bash
# emergency-response.sh
case "$1" in
"isolate")
# Emergency network isolation
iptables -I INPUT -j DROP
iptables -I OUTPUT -j DROP
echo "System isolated from network"
;;
"lockdown")
# Lock all user accounts except emergency admin
for user in $(cat /etc/passwd | cut -d: -f1); do
if [ "$user" != "root" ] && [ "$user" != "emergency" ]; then
usermod -L $user
fi
done
echo "All user accounts locked"
;;
"audit")
# Emergency audit collection
mkdir -p /tmp/emergency-audit
cp -r /var/log/* /tmp/emergency-audit/
journalctl --no-pager > /tmp/emergency-audit/journalctl.log
netstat -tulpn > /tmp/emergency-audit/network.log
ps auxf > /tmp/emergency-audit/processes.log
echo "Audit data collected in /tmp/emergency-audit/"
;;
"restore")
# Restore from isolation
iptables -F
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
echo "Network access restored - apply proper firewall rules"
;;
esac
```
## Compliance and Standards
### Security Standards Alignment
#### CIS (Center for Internet Security) Benchmarks
```yaml
cis_compliance:
level_1_controls:
- filesystem_configuration: "implemented"
- software_updates: "automated"
- secure_boot_settings: "implemented"
- additional_process_hardening: "implemented"
- mandatory_access_controls: "selinux_enforcing"
level_2_controls:
- address_space_layout_randomization: "enabled"
- prelink_disabled: "implemented"
- activate_gpg_check: "implemented"
- disable_automounting: "implemented"
```
#### NIST Cybersecurity Framework
```yaml
nist_framework:
identify:
- asset_management: "complete inventory of systems and services"
- risk_assessment: "quarterly risk assessments"
protect:
- access_control: "authentik SSO with MFA"
- awareness_training: "security documentation and procedures"
- data_security: "encryption at rest and in transit"
detect:
- anomalies_events: "automated monitoring and alerting"
- security_monitoring: "continuous monitoring of security events"
respond:
- response_planning: "documented incident response procedures"
- communications: "stakeholder notification procedures"
recover:
- recovery_planning: "documented recovery procedures"
- improvements: "lessons learned and security enhancements"
```
### Documentation and Training
#### Security Documentation
```yaml
required_documentation:
policies:
- information_security_policy
- access_control_policy
- incident_response_policy
- backup_recovery_policy
procedures:
- user_onboarding_offboarding
- security_incident_response
- vulnerability_management
- change_management
technical_guides:
- system_hardening_guide
- application_security_guide
- network_security_guide
- monitoring_alerting_guide
```
---
This comprehensive security hardening guide implements defense-in-depth security across all layers of the rick-infra stack, emphasizing the security benefits of native database services, Unix socket IPC, rootless containers, and centralized authentication.
## References
- **[Authentication Architecture](authentication-architecture.md)** - Detailed authentication and authorization
- **[Architecture Decisions](architecture-decisions.md)** - Security-focused architectural choices
- **[Authentik Deployment Guide](authentik-deployment-guide.md)** - Secure authentication deployment
- **[Service Integration Guide](service-integration-guide.md)** - Secure service integration patterns