Tutorial

Implement comprehensive remote management and secure access control across your Roundfleet devices. This tutorial covers Apple Remote Desktop configuration, multi-protocol remote access management, security policy enforcement, compliance frameworks, and automated fleet-wide deployment for enterprise environments.

Understanding macOS Remote Management

macOS provides multiple remote management protocols and services:

• Apple Remote Desktop (ARD) - Native macOS remote desktop solution with comprehensive management features
• SSH (Secure Shell) - Command-line remote access with strong encryption
• VNC (Virtual Network Computing) - Cross-platform remote desktop protocol
• Screen Sharing - Built-in macOS screen sharing functionality
• Remote Login - Terminal-based remote access
• Apple Configurator - Device configuration and management tool

Basic Remote Management Configuration

Enable Apple Remote Desktop

#!/bin/bash

# Enable Apple Remote Desktop with basic configuration
enable_remote_desktop() {
    echo "=== Enabling Apple Remote Desktop ==="
    
    local kickstart_path="/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart"
    
    if [[ ! -f "$kickstart_path" ]]; then
        echo "❌ ARD Agent not found on this system"
        return 1
    fi
    
    # Activate Remote Management
    if sudo "$kickstart_path" -activate; then
        echo "✅ Apple Remote Desktop activated successfully"
    else
        echo "❌ Failed to activate Apple Remote Desktop"
        return 1
    fi
    
    # Configure basic settings
    sudo "$kickstart_path" -configure -allowAccessFor -allUsers -privs -all
    
    # Restart ARD Agent
    sudo "$kickstart_path" -restart -agent
    
    echo "✅ Apple Remote Desktop configuration completed"
    return 0
}

# Execute function
enable_remote_desktop

Disable Remote Management

#!/bin/bash

# Disable Apple Remote Desktop
disable_remote_desktop() {
    echo "=== Disabling Apple Remote Desktop ==="
    
    local kickstart_path="/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart"
    
    if [[ ! -f "$kickstart_path" ]]; then
        echo "❌ ARD Agent not found on this system"
        return 1
    fi
    
    # Deactivate Remote Management
    if sudo "$kickstart_path" -deactivate; then
        echo "✅ Apple Remote Desktop deactivated successfully"
    else
        echo "❌ Failed to deactivate Apple Remote Desktop"
        return 1
    fi
    
    return 0
}

# Execute function
disable_remote_desktop

Configure User-Specific Access

#!/bin/bash

# Configure Remote Management for specific users
configure_user_access() {
    local target_users="$1"
    local privileges="$2"
    
    echo "=== Configuring User-Specific Remote Access ==="
    
    local kickstart_path="/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart"
    
    if [[ -z "$target_users" ]]; then
        echo "❌ Target users required"
        echo "Usage: configure_user_access 'user1,user2' 'privileges'"
        return 1
    fi
    
    # Activate with specified users
    sudo "$kickstart_path" -activate -configure -allowAccessFor -specifiedUsers
    
    # Configure user privileges
    IFS=',' read -ra USERS <<< "$target_users"
    for user in "${USERS[@]}"; do
        if id "$user" &>/dev/null; then
            sudo "$kickstart_path" -configure -users "$user" -access -on -privs -all
            echo "✅ Configured access for user: $user"
        else
            echo "⚠️  User not found: $user"
        fi
    done
    
    return 0
}

# Usage example
# configure_user_access "admin,support" "all"

Enterprise Remote Management System

#!/bin/bash

# Roundfleet Enterprise Remote Management System
# Comprehensive remote access control, security compliance, and fleet management

# Configuration
LOG_FILE="/var/log/roundfleet_remote_management.log"
CONFIG_DIR="/etc/roundfleet/remote_management"
POLICIES_DIR="$CONFIG_DIR/policies"
REPORTS_DIR="$CONFIG_DIR/reports"
COMPLIANCE_DIR="$CONFIG_DIR/compliance"
SECURITY_DIR="$CONFIG_DIR/security"
SESSION_DIR="$CONFIG_DIR/sessions"

# Remote access protocols
declare -A REMOTE_PROTOCOLS=(
    ["ard"]="Apple Remote Desktop"
    ["ssh"]="Secure Shell"
    ["vnc"]="Virtual Network Computing"
    ["screen_sharing"]="macOS Screen Sharing"
    ["remote_login"]="Terminal Remote Login"
)

# Security compliance frameworks
declare -A COMPLIANCE_FRAMEWORKS=(
    ["nist"]="access_control,encryption_in_transit,session_management,audit_trails"
    ["iso27001"]="secure_remote_access,access_control,monitoring,documentation"
    ["cis"]="secure_protocols,authentication,session_limits,logging"
    ["sox"]="financial_access_control,audit_requirements,change_management"
    ["hipaa"]="minimum_necessary,access_controls,audit_logs,encryption"
    ["pci_dss"]="secure_protocols,access_control,monitoring,encryption"
)

# Access privilege levels
declare -A PRIVILEGE_LEVELS=(
    ["view_only"]="observe,report"
    ["control"]="observe,control,interact"
    ["manage"]="observe,control,interact,copy_files,restart"
    ["admin"]="observe,control,interact,copy_files,restart,change_settings"
    ["full"]="all_privileges"
)

# Security policies
declare -A SECURITY_POLICIES=(
    ["strict"]="mfa_required,encryption_mandatory,session_timeout_15min,audit_all"
    ["standard"]="password_auth,encryption_preferred,session_timeout_30min,audit_admin"
    ["relaxed"]="basic_auth,session_timeout_60min,audit_changes"
    ["compliance"]="enterprise_auth,full_encryption,session_timeout_10min,comprehensive_audit"
)

# Logging function
log_action() {
    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | tee -a "$LOG_FILE"
}

# Setup directories
setup_directories() {
    for dir in "$CONFIG_DIR" "$POLICIES_DIR" "$REPORTS_DIR" "$COMPLIANCE_DIR" "$SECURITY_DIR" "$SESSION_DIR"; do
        if [[ ! -d "$dir" ]]; then
            mkdir -p "$dir"
            log_action "Created directory: $dir"
        fi
    done
}

# Check current remote management status
check_remote_management_status() {
    echo "=== Remote Management Status Check ==="
    
    local status_report="$REPORTS_DIR/remote_status_$(date '+%Y%m%d_%H%M%S').json"
    
    cat > "$status_report" << EOF
{
    "status_metadata": {
        "timestamp": "$(date -Iseconds)",
        "hostname": "$(hostname)",
        "os_version": "$(sw_vers -productVersion)"
    },
    "remote_services": {
EOF

    local first=true
    
    # Check Apple Remote Desktop
    local ard_status="disabled"
    if ps aux | grep -q "ARDAgent" && ! echo "$!" | grep -q "grep"; then
        ard_status="enabled"
    fi
    
    cat >> "$status_report" << EOF
        "apple_remote_desktop": {
            "status": "$ard_status",
            "process_running": $(pgrep -q ARDAgent && echo "true" || echo "false"),
            "port": "5900"
        },
EOF

    # Check SSH
    local ssh_status="disabled"
    if sudo systemsetup -getremotelogin | grep -q "On"; then
        ssh_status="enabled"
    fi
    
    cat >> "$status_report" << EOF
        "ssh": {
            "status": "$ssh_status",
            "port": "22",
            "service_running": $(launchctl list | grep -q "com.openssh.sshd" && echo "true" || echo "false")
        },
EOF

    # Check VNC/Screen Sharing
    local vnc_status="disabled"
    if launchctl list | grep -q "com.apple.screensharing"; then
        vnc_status="enabled"
    fi
    
    cat >> "$status_report" << EOF
        "screen_sharing": {
            "status": "$vnc_status",
            "port": "5900",
            "service_running": $(launchctl list | grep -q "com.apple.screensharing" && echo "true" || echo "false")
        }
    },
    "security_assessment": $(assess_remote_security),
    "active_sessions": $(get_active_remote_sessions)
}
EOF

    log_action "✅ Remote management status check completed: $status_report"
    echo "$status_report"
}

# Assess remote access security
assess_remote_security() {
    local security_score=0
    local total_checks=10
    
    # Check encryption
    if sudo systemsetup -getremotelogin | grep -q "On"; then
        security_score=$((security_score + 2))  # SSH is encrypted
    fi
    
    # Check firewall status
    if sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate | grep -q "enabled"; then
        security_score=$((security_score + 2))
    fi
    
    # Check for password complexity
    if pwpolicy -getaccountpolicies 2>/dev/null | grep -q "minLength"; then
        security_score=$((security_score + 1))
    fi
    
    # Check for failed login attempts
    local failed_attempts
    failed_attempts=$(grep "authentication failure" /var/log/auth.log 2>/dev/null | wc -l || echo 0)
    if [[ $failed_attempts -lt 10 ]]; then
        security_score=$((security_score + 1))
    fi
    
    # Check for active monitoring
    if [[ -f "$LOG_FILE" ]]; then
        security_score=$((security_score + 1))
    fi
    
    # Additional security checks
    security_score=$((security_score + 3))  # Placeholder for additional checks
    
    local security_percentage
    security_percentage=$(awk "BEGIN {printf \"%.0f\", ($security_score/$total_checks)*100}")
    
    local risk_level="low"
    if [[ $security_percentage -lt 60 ]]; then
        risk_level="high"
    elif [[ $security_percentage -lt 80 ]]; then
        risk_level="medium"
    fi
    
    echo "{\"score\": $security_score, \"percentage\": $security_percentage, \"risk_level\": \"$risk_level\"}"
}

# Get active remote sessions
get_active_remote_sessions() {
    local sessions='['
    local first=true
    
    # Check for SSH sessions
    local ssh_sessions
    ssh_sessions=$(who | grep "pts/" || echo "")
    
    while IFS= read -r session; do
        if [[ -n "$session" ]]; then
            if [[ "$first" == true ]]; then
                first=false
            else
                sessions+=','
            fi
            
            local user
            user=$(echo "$session" | awk '{print $1}')
            local terminal
            terminal=$(echo "$session" | awk '{print $2}')
            local login_time
            login_time=$(echo "$session" | awk '{print $3, $4}')
            local remote_host
            remote_host=$(echo "$session" | awk '{print $5}' | tr -d '()')
            
            sessions+="{\"type\": \"ssh\", \"user\": \"$user\", \"terminal\": \"$terminal\", \"login_time\": \"$login_time\", \"remote_host\": \"$remote_host\"}"
        fi
    done <<< "$ssh_sessions"
    
    # Check for VNC/ARD sessions
    local vnc_sessions
    vnc_sessions=$(netstat -an | grep ":5900" | grep "ESTABLISHED" || echo "")
    
    while IFS= read -r connection; do
        if [[ -n "$connection" ]]; then
            if [[ "$first" == true ]]; then
                first=false
            else
                sessions+=','
            fi
            
            local remote_ip
            remote_ip=$(echo "$connection" | awk '{print $5}' | cut -d: -f1)
            
            sessions+="{\"type\": \"vnc_ard\", \"remote_ip\": \"$remote_ip\", \"port\": \"5900\"}"
        fi
    done <<< "$vnc_sessions"
    
    sessions+=']'
    echo "$sessions"
}

# Configure enterprise remote access
configure_enterprise_remote_access() {
    local access_policy="$1"
    local target_protocols="$2"
    local user_groups="$3"
    
    log_action "Configuring enterprise remote access with policy: $access_policy"
    
    # Parse policy configuration
    local policy_config="${SECURITY_POLICIES[$access_policy]}"
    if [[ -z "$policy_config" ]]; then
        log_action "❌ Unknown security policy: $access_policy"
        return 1
    fi
    
    # Configure each specified protocol
    IFS=',' read -ra PROTOCOLS <<< "$target_protocols"
    for protocol in "${PROTOCOLS[@]}"; do
        case "$protocol" in
            "ard")
                configure_ard_enterprise "$access_policy" "$user_groups"
                ;;
            "ssh")
                configure_ssh_enterprise "$access_policy" "$user_groups"
                ;;
            "vnc")
                configure_vnc_enterprise "$access_policy" "$user_groups"
                ;;
            "screen_sharing")
                configure_screen_sharing_enterprise "$access_policy" "$user_groups"
                ;;
            *)
                log_action "⚠️  Unknown protocol: $protocol"
                ;;
        esac
    done
    
    # Apply security policy settings
    apply_security_policy_settings "$access_policy"
    
    log_action "✅ Enterprise remote access configuration completed"
}

# Configure Apple Remote Desktop for enterprise
configure_ard_enterprise() {
    local policy="$1"
    local user_groups="$2"
    
    echo "🖥️  Configuring Apple Remote Desktop for enterprise"
    
    local kickstart_path="/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart"
    
    # Activate ARD
    sudo "$kickstart_path" -activate -restart
    
    # Configure based on policy
    case "$policy" in
        "strict"|"compliance")
            # Restricted access with specific users only
            sudo "$kickstart_path" -configure -allowAccessFor -specifiedUsers
            sudo "$kickstart_path" -configure -privs -observe -control -interact
            ;;
        "standard")
            # Standard configuration
            sudo "$kickstart_path" -configure -allowAccessFor -specifiedUsers
            sudo "$kickstart_path" -configure -privs -observe -control
            ;;
        "relaxed")
            # More permissive configuration
            sudo "$kickstart_path" -configure -allowAccessFor -allUsers
            sudo "$kickstart_path" -configure -privs -all
            ;;
    esac
    
    # Configure specific users if provided
    if [[ -n "$user_groups" ]]; then
        IFS=',' read -ra GROUPS <<< "$user_groups"
        for group in "${GROUPS[@]}"; do
            # Add users from group to ARD access
            local group_users
            group_users=$(dscl . -read "/Groups/$group" GroupMembership 2>/dev/null | cut -d: -f2)
            
            for user in $group_users; do
                if id "$user" &>/dev/null; then
                    sudo "$kickstart_path" -configure -users "$user" -access -on
                    log_action "Added ARD access for user: $user"
                fi
            done
        done
    fi
    
    # Create ARD configuration backup
    local ard_config="$SECURITY_DIR/ard_config_$(date '+%Y%m%d_%H%M%S').conf"
    cat > "$ard_config" << EOF
# Apple Remote Desktop Configuration
# Policy: $policy
# Configured: $(date)

POLICY="$policy"
USER_GROUPS="$user_groups"
CONFIGURATION_DATE="$(date -Iseconds)"
ARD_STATUS="enabled"
ACCESS_CONTROL="specified_users"
EOF

    log_action "✅ ARD enterprise configuration completed"
}

# Configure SSH for enterprise
configure_ssh_enterprise() {
    local policy="$1"
    local user_groups="$2"
    
    echo "🔐 Configuring SSH for enterprise"
    
    # Enable SSH (Remote Login)
    sudo systemsetup -setremotelogin on
    
    # Configure SSH security based on policy
    local sshd_config="/etc/ssh/sshd_config"
    local custom_config="$SECURITY_DIR/ssh_custom_config"
    
    case "$policy" in
        "strict"|"compliance")
            cat > "$custom_config" << EOF
# Enterprise SSH Configuration - Strict Policy
Protocol 2
PermitRootLogin no
PasswordAuthentication yes
PubkeyAuthentication yes
MaxAuthTries 3
ClientAliveInterval 300
ClientAliveCountMax 2
MaxSessions 5
LoginGraceTime 60
PermitEmptyPasswords no
ChallengeResponseAuthentication no
UsePAM yes
EOF
            ;;
        "standard")
            cat > "$custom_config" << EOF
# Enterprise SSH Configuration - Standard Policy
Protocol 2
PermitRootLogin no
PasswordAuthentication yes
PubkeyAuthentication yes
MaxAuthTries 5
ClientAliveInterval 600
ClientAliveCountMax 3
MaxSessions 10
LoginGraceTime 120
PermitEmptyPasswords no
EOF
            ;;
        "relaxed")
            cat > "$custom_config" << EOF
# Enterprise SSH Configuration - Relaxed Policy
Protocol 2
PermitRootLogin no
PasswordAuthentication yes
PubkeyAuthentication yes
MaxAuthTries 10
ClientAliveInterval 900
MaxSessions 20
EOF
            ;;
    esac
    
    # Backup original config and apply custom configuration
    if [[ -f "$sshd_config" ]]; then
        sudo cp "$sshd_config" "$sshd_config.backup.$(date '+%Y%m%d_%H%M%S')"
    fi
    
    # Apply custom SSH configuration
    sudo cp "$custom_config" "/etc/ssh/sshd_config.d/roundfleet_enterprise.conf"
    
    # Restart SSH service
    sudo launchctl unload /System/Library/LaunchDaemons/ssh.plist 2>/dev/null
    sudo launchctl load /System/Library/LaunchDaemons/ssh.plist
    
    log_action "✅ SSH enterprise configuration completed"
}

# Monitor remote access sessions
monitor_remote_sessions() {
    log_action "Starting remote session monitoring"
    
    local monitoring_report="$SESSION_DIR/session_monitoring_$(date '+%Y%m%d_%H%M%S').json"
    
    cat > "$monitoring_report" << EOF
{
    "monitoring_metadata": {
        "timestamp": "$(date -Iseconds)",
        "hostname": "$(hostname)",
        "monitoring_period": "real_time"
    },
    "active_sessions": $(get_active_remote_sessions),
    "session_analytics": {
        "total_active_sessions": $(get_active_remote_sessions | jq '. | length'),
        "protocols_in_use": $(get_protocols_in_use),
        "unique_remote_hosts": $(get_unique_remote_hosts),
        "session_duration_analysis": $(analyze_session_durations)
    },
    "security_events": $(detect_security_events)
}
EOF

    log_action "✅ Remote session monitoring completed: $monitoring_report"
    echo "$monitoring_report"
}

# Detect security events
detect_security_events() {
    local events='['
    local first=true
    
    # Check for failed login attempts
    local failed_logins
    failed_logins=$(grep "authentication failure" /var/log/auth.log 2>/dev/null | tail -10)
    
    while IFS= read -r event; do
        if [[ -n "$event" ]]; then
            if [[ "$first" == true ]]; then
                first=false
            else
                events+=','
            fi
            
            local timestamp
            timestamp=$(echo "$event" | awk '{print $1, $2, $3}')
            local user
            user=$(echo "$event" | grep -o "user=[^ ]*" | cut -d= -f2 || echo "unknown")
            
            events+="{\"type\": \"failed_login\", \"timestamp\": \"$timestamp\", \"user\": \"$user\", \"severity\": \"medium\"}"
        fi
    done <<< "$failed_logins"
    
    # Check for unusual connection patterns
    local unusual_connections
    unusual_connections=$(netstat -an | grep ":22\|:5900" | grep "ESTABLISHED" | wc -l)
    
    if [[ $unusual_connections -gt 10 ]]; then
        if [[ "$first" == true ]]; then
            first=false
        else
            events+=','
        fi
        
        events+="{\"type\": \"high_connection_count\", \"count\": $unusual_connections, \"severity\": \"high\"}"
    fi
    
    events+=']'
    echo "$events"
}

# Generate compliance report
generate_compliance_report() {
    local framework="$1"
    
    log_action "Generating remote access compliance report for: $framework"
    
    local compliance_report="$COMPLIANCE_DIR/remote_compliance_${framework}_$(date '+%Y%m%d_%H%M%S').json"
    
    cat > "$compliance_report" << EOF
{
    "compliance_metadata": {
        "timestamp": "$(date -Iseconds)",
        "framework": "$framework",
        "hostname": "$(hostname)",
        "generator": "Roundfleet Remote Management Compliance"
    },
    "framework_requirements": $(get_framework_requirements "$framework"),
    "compliance_assessment": {
        "overall_score": $(calculate_compliance_score "$framework"),
        "protocol_compliance": $(assess_protocol_compliance "$framework"),
        "security_compliance": $(assess_security_compliance "$framework"),
        "access_control_compliance": $(assess_access_control_compliance "$framework")
    },
    "recommendations": $(generate_compliance_recommendations "$framework"),
    "remediation_actions": $(generate_remediation_actions "$framework")
}
EOF

    log_action "✅ Compliance report generated: $compliance_report"
    echo "$compliance_report"
}

# Calculate compliance score
calculate_compliance_score() {
    local framework="$1"
    
    local total_score=0
    local check_count=0
    
    # Basic compliance checks
    check_count=$((check_count + 1))
    if sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate | grep -q "enabled"; then
        total_score=$((total_score + 20))
    fi
    
    check_count=$((check_count + 1))
    if [[ -f "$LOG_FILE" ]]; then
        total_score=$((total_score + 20))
    fi
    
    check_count=$((check_count + 1))
    if sudo systemsetup -getremotelogin | grep -q "On"; then
        total_score=$((total_score + 15))  # SSH encryption
    fi
    
    check_count=$((check_count + 1))
    if [[ -d "$SECURITY_DIR" ]]; then
        total_score=$((total_score + 15))
    fi
    
    # Framework-specific checks
    case "$framework" in
        "nist"|"iso27001")
            check_count=$((check_count + 1))
            if [[ -f "$SECURITY_DIR/ard_config"* ]]; then
                total_score=$((total_score + 15))
            fi
            
            check_count=$((check_count + 1))
            if [[ -f "/etc/ssh/sshd_config.d/roundfleet_enterprise.conf" ]]; then
                total_score=$((total_score + 15))
            fi
            ;;
    esac
    
    local final_score
    final_score=$(awk "BEGIN {printf \"%.0f\", ($total_score/$check_count)}")
    
    echo "$final_score"
}

# Apply automated security policies
apply_automated_security_policies() {
    local policy_type="$1"
    
    log_action "Applying automated security policies: $policy_type"
    
    case "$policy_type" in
        "session_timeout")
            configure_session_timeouts
            ;;
        "failed_login_protection")
            configure_failed_login_protection
            ;;
        "encryption_enforcement")
            enforce_encryption_policies
            ;;
        "access_logging")
            configure_comprehensive_logging
            ;;
        *)
            log_action "⚠️  Unknown policy type: $policy_type"
            return 1
            ;;
    esac
    
    log_action "✅ Automated security policies applied"
}

# Configure session timeouts
configure_session_timeouts() {
    echo "⏰ Configuring session timeouts"
    
    # SSH session timeouts (already configured in SSH enterprise setup)
    # ARD session timeout configuration
    local timeout_config="$SECURITY_DIR/session_timeouts.conf"
    
    cat > "$timeout_config" << EOF
# Session Timeout Configuration
SSH_CLIENT_ALIVE_INTERVAL=300
SSH_CLIENT_ALIVE_COUNT_MAX=2
ARD_SESSION_TIMEOUT=1800
VNC_SESSION_TIMEOUT=1800
SCREEN_SHARING_TIMEOUT=1800
IDLE_DISCONNECT_TIME=900
EOF

    log_action "✅ Session timeouts configured"
}

# Main execution function
main() {
    local action="${1:-status}"
    local parameter="$2"
    local additional_param="$3"
    local extra_param="$4"
    
    log_action "=== Roundfleet Remote Management Started ==="
    log_action "Action: $action"
    log_action "Parameter: ${parameter:-N/A}"
    
    setup_directories
    
    case "$action" in
        "enable")
            if [[ -z "$parameter" ]]; then
                enable_remote_desktop
            else
                configure_enterprise_remote_access "$parameter" "${additional_param:-ard}" "$extra_param"
            fi
            ;;
        "disable")
            disable_remote_desktop
            ;;
        "status")
            check_remote_management_status
            ;;
        "configure")
            if [[ -z "$parameter" || -z "$additional_param" ]]; then
                echo "Usage: $0 configure <policy> <protocols> [user_groups]"
                echo "Policies: ${!SECURITY_POLICIES[*]}"
                echo "Protocols: ${!REMOTE_PROTOCOLS[*]}"
                exit 1
            fi
            configure_enterprise_remote_access "$parameter" "$additional_param" "$extra_param"
            ;;
        "monitor")
            monitor_remote_sessions
            ;;
        "compliance")
            if [[ -z "$parameter" ]]; then
                echo "Available compliance frameworks:"
                for framework in "${!COMPLIANCE_FRAMEWORKS[@]}"; do
                    echo "  - $framework: ${COMPLIANCE_FRAMEWORKS[$framework]}"
                done
                echo ""
                echo "Usage: $0 compliance <framework>"
                exit 1
            fi
            generate_compliance_report "$parameter"
            ;;
        "users")
            if [[ -z "$parameter" || -z "$additional_param" ]]; then
                echo "Usage: $0 users <user_list> <privileges>"
                echo "Example: $0 users 'admin,support' 'control'"
                exit 1
            fi
            configure_user_access "$parameter" "$additional_param"
            ;;
        "security")
            if [[ -z "$parameter" ]]; then
                echo "Available security policies:"
                echo "  - session_timeout"
                echo "  - failed_login_protection"
                echo "  - encryption_enforcement"
                echo "  - access_logging"
                echo ""
                echo "Usage: $0 security <policy_type>"
                exit 1
            fi
            apply_automated_security_policies "$parameter"
            ;;
        *)
            echo "Usage: $0 {enable|disable|status|configure|monitor|compliance|users|security}"
            echo "  enable      - Enable basic remote management or configure enterprise policy"
            echo "  disable     - Disable remote management"
            echo "  status      - Check current remote management status"
            echo "  configure   - Configure enterprise remote access with policies"
            echo "  monitor     - Monitor active remote sessions"
            echo "  compliance  - Generate compliance report"
            echo "  users       - Configure user-specific access"
            echo "  security    - Apply automated security policies"
            exit 1
            ;;
    esac
    
    log_action "=== Remote management operation completed ==="
}

# Execute main function
main "$@"

Advanced Remote Management Features

Multi-Protocol Session Management

#!/bin/bash

# Comprehensive multi-protocol session management
manage_multi_protocol_sessions() {
    echo "=== Multi-Protocol Session Management ==="
    
    local session_config="$SESSION_DIR/protocol_management.json"
    
    cat > "$session_config" << EOF
{
    "protocol_management": {
        "apple_remote_desktop": {
            "port": 5900,
            "encryption": "AES-128",
            "authentication": "system_accounts",
            "max_concurrent_sessions": 5,
            "session_timeout": 1800
        },
        "ssh": {
            "port": 22,
            "encryption": "AES-256",
            "authentication": "key_based_preferred",
            "max_concurrent_sessions": 10,
            "session_timeout": 3600
        },
        "vnc": {
            "port": 5900,
            "encryption": "optional",
            "authentication": "vnc_password",
            "max_concurrent_sessions": 3,
            "session_timeout": 1800
        },
        "screen_sharing": {
            "port": 5900,
            "encryption": "built_in",
            "authentication": "system_accounts",
            "max_concurrent_sessions": 2,
            "session_timeout": 2700
        }
    },
    "security_policies": {
        "force_encryption": true,
        "require_mfa": false,
        "log_all_sessions": true,
        "geographic_restrictions": false,
        "time_based_access": false
    }
}
EOF

    echo "📊 Multi-protocol session management configured: $session_config"
}

# Advanced security monitoring
advanced_security_monitoring() {
    echo "🔍 Advanced Security Monitoring"
    
    local monitoring_script="$SECURITY_DIR/advanced_monitoring.sh"
    
    cat > "$monitoring_script" << 'EOF'
#!/bin/bash

# Advanced Remote Access Security Monitoring

while true; do
    # Monitor connection attempts
    CONNECTION_ATTEMPTS=$(netstat -an | grep -E ":22|:5900" | grep "SYN_RECV" | wc -l)
    
    if [[ $CONNECTION_ATTEMPTS -gt 20 ]]; then
        logger "Roundfleet: High number of remote connection attempts detected: $CONNECTION_ATTEMPTS"
        # Send alert
        echo "High connection attempts: $CONNECTION_ATTEMPTS" | mail -s "Roundfleet Security Alert" [email protected]
    fi
    
    # Monitor failed authentication attempts
    FAILED_AUTH=$(grep "authentication failure" /var/log/auth.log | grep "$(date '+%Y-%m-%d')" | wc -l)
    
    if [[ $FAILED_AUTH -gt 10 ]]; then
        logger "Roundfleet: High number of authentication failures: $FAILED_AUTH"
    fi
    
    # Monitor unusual remote access patterns
    UNIQUE_IPS=$(netstat -an | grep -E ":22|:5900" | grep "ESTABLISHED" | awk '{print $5}' | cut -d: -f1 | sort -u | wc -l)
    
    if [[ $UNIQUE_IPS -gt 5 ]]; then
        logger "Roundfleet: Multiple unique remote IPs detected: $UNIQUE_IPS"
    fi
    
    sleep 300  # Check every 5 minutes
done
EOF

    chmod +x "$monitoring_script"
    echo "🔐 Advanced security monitoring script created"
}

Zero Trust Remote Access

#!/bin/bash

# Implement Zero Trust remote access principles
implement_zero_trust_remote_access() {
    echo "🛡️  Implementing Zero Trust Remote Access"
    
    local zero_trust_config="$SECURITY_DIR/zero_trust_config.json"
    
    cat > "$zero_trust_config" << EOF
{
    "zero_trust_principles": {
        "verify_explicitly": {
            "device_verification": true,
            "user_verification": true,
            "location_verification": true,
            "behavior_analysis": true
        },
        "least_privilege_access": {
            "session_based_permissions": true,
            "time_limited_access": true,
            "resource_specific_access": true,
            "privilege_escalation_monitoring": true
        },
        "assume_breach": {
            "continuous_monitoring": true,
            "anomaly_detection": true,
            "session_recording": true,
            "immediate_response": true
        }
    },
    "implementation_controls": {
        "device_trust_score": "required",
        "user_risk_assessment": "continuous",
        "network_segmentation": "enabled",
        "encrypted_channels_only": true,
        "session_isolation": true
    }
}
EOF

    echo "🎯 Zero Trust remote access configuration created"
}

Security Best Practices

🔐 Access Control and Authentication

• Multi-factor authentication with enterprise identity integration
• Role-based access control with granular permission management
• Device trust verification with certificate-based authentication
• Session-based access control with time-limited permissions

🛡️ Network Security and Encryption

• End-to-end encryption for all remote protocols (AES-256)
• VPN integration with secure tunnel establishment
• Network segmentation with micro-perimeter enforcement
• Traffic analysis with anomaly detection and threat intelligence

📊 Monitoring and Compliance

• Real-time session monitoring with comprehensive logging
• Compliance framework support (NIST, ISO 27001, CIS, SOX, HIPAA, PCI DSS)
• Automated security assessment with risk scoring and alerts
• Forensic capabilities with detailed audit trails and session recordings

🚀 Enterprise Operations

• Fleet-wide deployment with centralized policy management
• Automated provisioning with identity lifecycle integration
• High availability with load balancing and failover capabilities
• Integration ecosystem with SIEM, IAM, and security tools

Important Notes

• Apple Remote Desktop requires appropriate licensing for enterprise use
• SSH key management essential for secure enterprise deployments
• Network firewall configuration required to complement device-level security
• Regular security assessments needed to maintain compliance posture
• User training critical for secure remote access practices
• Incident response procedures must be established for security events