auth-framework 0.4.2

# Security Configuration Guide


## Introduction


This guide provides comprehensive security configuration and hardening procedures for AuthFramework deployments. Security is built into AuthFramework's core design, but proper configuration and operational practices are essential for maintaining a secure authentication and authorization system.

## Security Architecture


### Defense in Depth Strategy


AuthFramework implements multiple layers of security:

1. **Network Security**: TLS encryption, firewall configuration, network segmentation
2. **Application Security**: Secure coding practices, input validation, output encoding
3. **Authentication Security**: Strong password policies, MFA, rate limiting
4. **Authorization Security**: Role-based access control, principle of least privilege
5. **Data Security**: Encryption at rest and in transit, secure key management
6. **Operational Security**: Logging, monitoring, incident response

### Security by Default


AuthFramework follows security-by-default principles:

- **Secure Configuration**: All defaults prioritize security over convenience
- **Fail Closed**: System fails to secure state when encountering errors
- **Explicit Permissions**: All access requires explicit authorization
- **Comprehensive Logging**: All security events are logged and monitored

## Core Security Configuration


### JWT Security Configuration


Configure JWT tokens with strong security parameters:

```toml
[security.jwt]
# Use a cryptographically secure secret (256+ bits)

secret = "${JWT_SECRET}"

# Short-lived access tokens reduce exposure window

access_token_expiry = "15m"

# Longer-lived refresh tokens with secure rotation

refresh_token_expiry = "7d"
refresh_token_rotation = true

# Strong signing algorithm

algorithm = "HS256"  # or RS256 for asymmetric

# Token validation settings

require_exp = true
require_iat = true
require_nbf = true
clock_skew_tolerance = "30s"

# Audience and issuer validation

issuer = "https://auth.yourdomain.com"
audience = ["https://api.yourdomain.com"]
```

### Password Security Configuration


Implement strong password policies:

```toml
[security.password]
# Password complexity requirements

min_length = 12
require_uppercase = true
require_lowercase = true
require_numbers = true
require_special_chars = true

# Password history and rotation

history_count = 12
max_age_days = 90
warn_before_expiry_days = 7

# Brute force protection

max_failed_attempts = 5
lockout_duration = "15m"
progressive_delays = true

# Password hashing configuration

hash_algorithm = "argon2id"
argon2_memory = 65536      # 64MB
argon2_iterations = 3
argon2_parallelism = 4
```

### Multi-Factor Authentication (MFA)


Configure comprehensive MFA settings:

```toml
[security.mfa]
# MFA enforcement policy

enforce_for_admins = true
enforce_for_all_users = false
grace_period_days = 30

# TOTP configuration

totp_issuer = "YourApp"
totp_window = 1
totp_period = 30
totp_digits = 6

# Backup codes

backup_codes_count = 10
backup_codes_length = 8

# SMS configuration (if enabled)

sms_provider = "twilio"
sms_rate_limit = "5/hour"

# Email MFA configuration

email_rate_limit = "3/hour"
email_expiry = "10m"
```

### Rate Limiting Configuration


Implement comprehensive rate limiting:

```toml
[security.rate_limiting]
# Global rate limits

global_requests_per_minute = 1000
global_burst_limit = 100

# Authentication endpoint limits

auth_requests_per_minute = 20
auth_burst_limit = 5
auth_lockout_duration = "5m"

# Password reset limits

password_reset_per_hour = 3
password_reset_per_day = 10

# Registration limits

registration_per_hour = 10
registration_per_ip_per_day = 5

# API endpoint limits

api_requests_per_minute = 100
api_burst_limit = 20
```

### Session Security Configuration


Configure secure session management:

```toml
[security.session]
# Session timeouts

idle_timeout = "30m"
absolute_timeout = "8h"
remember_me_timeout = "30d"

# Session security

secure_cookies = true
http_only_cookies = true
same_site = "Strict"
csrf_protection = true

# Session storage

storage_type = "redis"
encryption_enabled = true
session_key_rotation = "24h"

# Concurrent sessions

max_concurrent_sessions = 3
invalidate_other_sessions_on_password_change = true
```

## Encryption and Key Management


### Data Encryption Configuration


Configure encryption for sensitive data:

```toml
[security.encryption]
# Encryption at rest

database_encryption = true
cache_encryption = true
log_encryption = false  # Enable for highly sensitive environments

# Encryption algorithms

symmetric_algorithm = "AES-256-GCM"
key_derivation = "PBKDF2"
key_iterations = 100000

# Key management

key_rotation_interval = "90d"
key_backup_enabled = true
key_escrow_enabled = false  # Enable for compliance requirements
```

### Key Management Best Practices


#### Environment Variable Configuration


```bash
# Primary encryption keys

export JWT_SECRET="$(openssl rand -base64 32)"
export ENCRYPTION_KEY="$(openssl rand -base64 32)"
export SESSION_SECRET="$(openssl rand -base64 32)"

# Database encryption key

export DB_ENCRYPTION_KEY="$(openssl rand -base64 32)"

# External service keys

export OAUTH_CLIENT_SECRET="your-oauth-client-secret"
export SMS_API_KEY="your-sms-provider-api-key"
```

#### HashiCorp Vault Integration


```toml
[security.vault]
enabled = true
address = "https://vault.yourdomain.com:8200"
token = "${VAULT_TOKEN}"
mount_path = "secret/authframework"

# Key paths in Vault

jwt_secret_path = "jwt/secret"
encryption_key_path = "encryption/master-key"
database_key_path = "database/encryption-key"

# Automatic key rotation

auto_rotation = true
rotation_interval = "90d"
```

#### AWS KMS Integration


```toml
[security.kms]
enabled = true
region = "us-west-2"
key_id = "arn:aws:kms:us-west-2:123456789012:key/12345678-1234-1234-1234-123456789012"

# Encryption context

encryption_context = { "service" = "auth-framework", "environment" = "production" }

# Key rotation

auto_rotation = true
```

## Network Security


### TLS Configuration


Configure strong TLS settings:

```toml
[security.tls]
# Certificate configuration

cert_file = "/app/certs/server.crt"
key_file = "/app/certs/server.key"
ca_file = "/app/certs/ca.crt"

# Protocol versions

min_version = "TLSv1.2"
max_version = "TLSv1.3"

# Cipher suites (TLS 1.2)

cipher_suites = [
    "ECDHE-RSA-AES256-GCM-SHA384",
    "ECDHE-RSA-AES128-GCM-SHA256",
    "ECDHE-RSA-AES256-CBC-SHA384",
    "ECDHE-RSA-AES128-CBC-SHA256"
]

# Certificate validation

verify_client_cert = false
require_client_cert = false  # Enable for mutual TLS

# OCSP settings

ocsp_stapling = true
ocsp_response_cache = "1h"
```

### Firewall Configuration


Configure host-based firewall:

```bash
# Ubuntu/Debian - UFW

sudo ufw default deny incoming
sudo ufw default allow outgoing

# Allow SSH (restrict to management network)

sudo ufw allow from 192.168.1.0/24 to any port 22

# Allow HTTP/HTTPS

sudo ufw allow 80/tcp
sudo ufw allow 443/tcp

# Allow health check (internal only)

sudo ufw allow from 10.0.0.0/8 to any port 8080

# Allow metrics (monitoring network only)

sudo ufw allow from 172.16.0.0/12 to any port 9090

sudo ufw enable
```

### Network Segmentation


Implement network segmentation:

```yaml
# Docker network configuration

networks:
  frontend:
    driver: bridge
    ipam:
      config:
        - subnet: 172.20.1.0/24
  backend:
    driver: bridge
    internal: true
    ipam:
      config:
        - subnet: 172.20.2.0/24
  database:
    driver: bridge
    internal: true
    ipam:
      config:
        - subnet: 172.20.3.0/24
```

## Access Control and Authorization


### Role-Based Access Control (RBAC)


Configure comprehensive RBAC:

```toml
[security.rbac]
# Default permissions

default_role = "user"
require_explicit_permissions = true

# Role hierarchy

[security.rbac.roles]
[security.rbac.roles.super_admin]
permissions = ["*"]
inherits = []

[security.rbac.roles.admin]
permissions = [
    "users:read", "users:write", "users:delete",
    "roles:read", "roles:write",
    "system:read", "system:configure"
]
inherits = []

[security.rbac.roles.user_manager]
permissions = [
    "users:read", "users:write",
    "profile:read", "profile:write"
]
inherits = ["user"]

[security.rbac.roles.user]
permissions = [
    "profile:read", "profile:write",
    "session:manage"
]
inherits = []

[security.rbac.roles.guest]
permissions = ["public:read"]
inherits = []
```

### API Access Control


Configure API-level access control:

```toml
[security.api]
# API key requirements

require_api_key = true
api_key_header = "X-API-Key"
api_key_query_param = "api_key"

# Request signing

require_request_signing = false  # Enable for high-security APIs
signature_algorithm = "HMAC-SHA256"
signature_timeout = "5m"

# IP whitelisting

ip_whitelist_enabled = false
allowed_ip_ranges = [
    "192.168.1.0/24",
    "10.0.0.0/8"
]

# User agent restrictions

block_suspicious_user_agents = true
allowed_user_agents = [
    "AuthFramework-Client/*",
    "YourApp-Mobile/*"
]
```

## Logging and Monitoring


### Security Event Logging


Configure comprehensive security logging:

```toml
[security.logging]
# Log levels for security events

authentication_events = "info"
authorization_events = "info"
security_violations = "warn"
suspicious_activity = "error"

# Event categories to log

log_successful_auth = true
log_failed_auth = true
log_password_changes = true
log_role_changes = true
log_api_access = true
log_admin_actions = true

# Log format and destination

format = "json"
destination = "file"  # file, syslog, or external
file_path = "/app/logs/security.log"

# Log retention

retention_days = 90
max_file_size = "100MB"
max_files = 10

# External logging

[security.logging.external]
enabled = false
endpoint = "https://logs.yourdomain.com/api/v1/logs"
api_key = "${LOG_API_KEY}"
```

### Security Monitoring


Configure real-time security monitoring:

```toml
[security.monitoring]
# Anomaly detection

failed_login_threshold = 10
failed_login_window = "5m"
unusual_access_patterns = true

# Alerting

email_alerts = true
webhook_alerts = true
alert_endpoints = [
    "https://alerts.yourdomain.com/webhook",
    "mailto:security@yourdomain.com"
]

# Alert thresholds

high_failure_rate = 0.1      # 10% failure rate
suspicious_ip_count = 5      # IPs with multiple failures
rapid_requests_threshold = 100  # Requests per minute from single IP

# Integration with SIEM

siem_integration = true
siem_format = "CEF"  # Common Event Format
siem_endpoint = "syslog://siem.yourdomain.com:514"
```

## Compliance and Auditing


### Audit Trail Configuration


Configure comprehensive audit trails:

```toml
[security.audit]
# Audit trail requirements

enabled = true
immutable_logs = true
signed_logs = true
tamper_detection = true

# Events to audit

user_creation = true
user_deletion = true
permission_changes = true
configuration_changes = true
data_access = true
admin_actions = true

# Audit log format

format = "json"
include_request_details = true
include_response_details = false  # Avoid logging sensitive data
include_ip_address = true
include_user_agent = true

# Audit log storage

storage_type = "database"  # database, file, or external
encryption_enabled = true
retention_period = "7y"  # 7 years for compliance
```

### Compliance Standards


#### GDPR Compliance


```toml
[security.gdpr]
enabled = true

# Data minimization

collect_minimal_data = true
anonymize_logs = true
pseudonymize_identifiers = true

# User rights

right_to_be_forgotten = true
data_portability = true
consent_management = true

# Data processing

lawful_basis_tracking = true
purpose_limitation = true
data_retention_limits = true

# Privacy by design

privacy_impact_assessment = true
data_protection_officer = "dpo@yourdomain.com"
```

#### SOC 2 Type II Compliance


```toml
[security.soc2]
enabled = true

# Security controls

access_controls = true
logical_access_controls = true
network_security = true
data_protection = true

# Availability controls

monitoring_controls = true
incident_response = true
change_management = true
backup_controls = true

# Processing integrity

input_validation = true
error_handling = true
data_processing_controls = true

# Confidentiality controls

encryption_controls = true
confidentiality_agreements = true
```

## Security Testing and Validation


### Penetration Testing


Regular security testing schedule:

```toml
[security.testing]
# Automated security testing

dependency_scanning = true
static_analysis = true
dynamic_analysis = true

# Penetration testing schedule

external_pentest_frequency = "annually"
internal_pentest_frequency = "quarterly"
red_team_exercises = "bi-annually"

# Vulnerability management

vulnerability_scanning = "weekly"
critical_patch_timeframe = "24h"
high_patch_timeframe = "7d"
medium_patch_timeframe = "30d"
```

### Security Metrics and KPIs


Monitor key security metrics:

```toml
[security.metrics]
# Authentication metrics

failed_login_rate = "daily"
mfa_adoption_rate = "monthly"
password_strength_score = "weekly"

# Access control metrics

privilege_escalation_attempts = "daily"
unauthorized_access_attempts = "daily"
role_compliance_score = "monthly"

# Vulnerability metrics

mean_time_to_patch = "weekly"
vulnerability_density = "monthly"
security_test_coverage = "monthly"

# Incident metrics

mean_time_to_detection = "monthly"
mean_time_to_response = "monthly"
false_positive_rate = "weekly"
```

## Incident Response


### Security Incident Response Plan


```toml
[security.incident_response]
# Incident classification

severity_levels = ["low", "medium", "high", "critical"]
response_times = {
    "critical" = "15m",
    "high" = "1h",
    "medium" = "4h",
    "low" = "24h"
}

# Response team contacts

security_team = ["security@yourdomain.com"]
incident_commander = "incident-commander@yourdomain.com"
legal_team = "legal@yourdomain.com"
external_support = "security-partner@example.com"

# Automated responses

auto_lockout_suspicious_ips = true
auto_disable_compromised_accounts = true
auto_rotate_suspected_keys = false  # Requires manual approval

# Communication plan

status_page = "https://status.yourdomain.com"
customer_notification = true
regulatory_notification = true
```

### Incident Playbooks


#### Compromised User Account


```bash
#!/bin/bash

# /opt/security/playbooks/compromised-account.sh


USER_ID=$1
INCIDENT_ID=$2

# 1. Immediately disable account

auth-framework-cli users disable --user-id $USER_ID --reason "Security incident $INCIDENT_ID"

# 2. Invalidate all sessions

auth-framework-cli sessions revoke-all --user-id $USER_ID

# 3. Reset password

auth-framework-cli users reset-password --user-id $USER_ID --force

# 4. Enable MFA requirement

auth-framework-cli users require-mfa --user-id $USER_ID

# 5. Log incident

auth-framework-cli incidents log --type "compromised-account" --user-id $USER_ID --incident-id $INCIDENT_ID

# 6. Notify security team

curl -X POST https://alerts.yourdomain.com/api/incidents \
  -H "Content-Type: application/json" \
  -d "{\"type\":\"compromised-account\",\"user_id\":\"$USER_ID\",\"incident_id\":\"$INCIDENT_ID\"}"
```

#### Suspicious API Activity


```bash
#!/bin/bash

# /opt/security/playbooks/suspicious-api.sh


IP_ADDRESS=$1
INCIDENT_ID=$2

# 1. Block IP address

auth-framework-cli ip-filter block --ip $IP_ADDRESS --duration "24h" --reason "Suspicious activity $INCIDENT_ID"

# 2. Analyze recent requests

auth-framework-cli logs query --ip $IP_ADDRESS --since "1h" --format json > /tmp/suspicious-activity-$INCIDENT_ID.json

# 3. Check for affected users

auth-framework-cli users list-by-ip --ip $IP_ADDRESS --since "1h" > /tmp/affected-users-$INCIDENT_ID.txt

# 4. Notify security team with details

curl -X POST https://alerts.yourdomain.com/api/incidents \
  -H "Content-Type: application/json" \
  -d "{\"type\":\"suspicious-api\",\"ip\":\"$IP_ADDRESS\",\"incident_id\":\"$INCIDENT_ID\"}" \
  --data-binary @/tmp/suspicious-activity-$INCIDENT_ID.json
```

## Security Maintenance


### Regular Security Tasks


#### Daily Tasks


```bash
#!/bin/bash

# /opt/security/daily-tasks.sh


# Check for security alerts

auth-framework-cli security alerts --since "24h"

# Verify backup integrity

auth-framework-cli backup verify --date "yesterday"

# Check failed login attempts

auth-framework-cli logs failed-logins --since "24h" | grep -c "FAILED" > /tmp/failed-logins.count

# Monitor suspicious IPs

auth-framework-cli ip-analysis suspicious --since "24h"

# Generate daily security report

auth-framework-cli reports security --type daily --output /reports/security-daily-$(date +%Y%m%d).json
```

#### Weekly Tasks


```bash
#!/bin/bash

# /opt/security/weekly-tasks.sh


# Update threat intelligence

auth-framework-cli threat-intel update

# Review user permissions

auth-framework-cli audit permissions --output /reports/permissions-audit-$(date +%Y%m%d).json

# Check for unused accounts

auth-framework-cli users inactive --days 90

# Review security configuration

auth-framework-cli config audit --output /reports/config-audit-$(date +%Y%m%d).json

# Generate weekly security metrics

auth-framework-cli reports security --type weekly --output /reports/security-weekly-$(date +%Y%m%d).json
```

#### Monthly Tasks


```bash
#!/bin/bash

# /opt/security/monthly-tasks.sh


# Review and rotate API keys

auth-framework-cli api-keys rotate --older-than "30d"

# Update security policies

auth-framework-cli policies review --output /reports/policy-review-$(date +%Y%m%d).json

# Conduct access review

auth-framework-cli audit access-review --output /reports/access-review-$(date +%Y%m%d).json

# Update security documentation

auth-framework-cli docs security-update

# Generate monthly compliance report

auth-framework-cli reports compliance --type monthly --output /reports/compliance-$(date +%Y%m%d).json
```

## Security Checklist


### Deployment Security Checklist


- [ ] **Environment Configuration**
  - [ ] All secrets stored in secure environment variables or key management system
  - [ ] No hardcoded secrets in configuration files
  - [ ] Secure defaults applied for all configuration options
  - [ ] Environment-specific security policies configured

- [ ] **Network Security**
  - [ ] TLS 1.2+ configured with strong cipher suites
  - [ ] Firewall rules limiting access to necessary ports only
  - [ ] Network segmentation implemented
  - [ ] Load balancer configured with security headers

- [ ] **Authentication Security**
  - [ ] Strong password policy enforced
  - [ ] MFA enabled for administrative accounts
  - [ ] Rate limiting configured for authentication endpoints
  - [ ] Account lockout policies implemented

- [ ] **Authorization Security**
  - [ ] Role-based access control configured
  - [ ] Principle of least privilege enforced
  - [ ] API access controls implemented
  - [ ] Regular access reviews scheduled

- [ ] **Data Security**
  - [ ] Encryption at rest enabled
  - [ ] Encryption in transit enforced
  - [ ] Secure key management implemented
  - [ ] Data backup encryption enabled

- [ ] **Monitoring and Logging**
  - [ ] Security event logging configured
  - [ ] Real-time monitoring alerts set up
  - [ ] Log retention policies implemented
  - [ ] SIEM integration configured

- [ ] **Compliance and Auditing**
  - [ ] Audit trail configuration enabled
  - [ ] Compliance standards implemented
  - [ ] Regular security assessments scheduled
  - [ ] Incident response plan documented

### Operational Security Checklist


- [ ] **Regular Maintenance**
  - [ ] Security patches applied promptly
  - [ ] Dependencies updated regularly
  - [ ] Security configurations reviewed monthly
  - [ ] Access permissions audited quarterly

- [ ] **Monitoring and Response**
  - [ ] Security metrics monitored daily
  - [ ] Alert thresholds configured appropriately
  - [ ] Incident response procedures tested
  - [ ] Security team training current

- [ ] **Continuous Improvement**
  - [ ] Security testing performed regularly
  - [ ] Lessons learned from incidents documented
  - [ ] Security policies updated based on threats
  - [ ] Security awareness training provided

## Support and Resources


- **Security Documentation**: [security.authframework.dev](https://security.authframework.dev)
- **Security Advisories**: [security-advisories@authframework.dev](mailto:security-advisories@authframework.dev)
- **Vulnerability Reports**: [security@authframework.dev](mailto:security@authframework.dev)
- **Emergency Response**: [emergency@authframework.dev](mailto:emergency@authframework.dev)

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*AuthFramework v0.4.0 - THE premier authentication and authorization solution*