cschantz
b33c57086f
PROBLEM: Live monitor showed static CT_LIMIT="100" recommendation - No analysis of actual site traffic - No consideration of legitimate high-connection users - Could block CDNs, bots, or legitimate traffic spikes - No way to know what's safe for the specific server SOLUTION: Created comprehensive CT_LIMIT optimizer script NEW SCRIPT: modules/security/optimize-ct-limit.sh WHAT IT DOES: 1. Analyzes Apache logs (last 24 hours by default) - Parses all domain logs in /var/log/apache2/domlogs/ - Tracks max concurrent connections per IP per domain - Identifies user agents and behavior patterns 2. Classifies IP behavior using bot-signatures.sh - Legitimate bots (Googlebot, Bingbot, etc.) - AI crawlers (GPT, Claude, etc.) - CDNs (Cloudflare, Akamai, etc.) - Normal users vs high-traffic users - Potential scrapers 3. Analyzes current active connections - Uses ss or netstat to check real-time connections - Identifies current highest connection counts 4. Calculates statistics - 95th percentile of legitimate user connections - 99th percentile for headroom - Max concurrent from single legitimate IP - Separates bot/CDN traffic from user traffic 5. Provides 3 recommendations: a) CONSERVATIVE (max_legit + 20) - For high-traffic sites b) BALANCED (max_legit + 10) - Recommended for most ⭐ c) AGGRESSIVE (max_legit + 5) - Only during active attack 6. Whitelist recommendations - Identifies bots/CDNs exceeding recommended limit - Suggests specific IPs to whitelist in CSF - Prevents blocking Googlebot, monitoring services, etc. 7. One-command application - Backs up csf.conf automatically - Updates CT_LIMIT to recommended value - Enables SYNFLOOD protection - Restarts CSF - Provides monitoring command EXAMPLE OUTPUT: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Connection Analysis Summary: Total unique IPs analyzed: 1,247 Legitimate users: 1,180 Bots/CDNs/Crawlers: 67 Legitimate User Connection Patterns: Max concurrent from single IP: 45 95th percentile: 12 concurrent connections 99th percentile: 28 concurrent connections Current Active Connections: Highest right now: 8 connections from 1.2.3.4 Current CSF Configuration: CT_LIMIT = 150 📊 RECOMMENDED CT_LIMIT VALUES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. CONSERVATIVE: CT_LIMIT = 65 • Allows headroom for traffic spikes • Won't block legitimate users 2. BALANCED: CT_LIMIT = 55 ⭐ • Based on 99th percentile + buffer • Blocks most attack traffic 3. AGGRESSIVE: CT_LIMIT = 50 • Maximum DDoS protection • May affect some legitimate users ⚠️ WHITELIST RECOMMENDATIONS Found bots/crawlers with high connection counts: • 66.249.72.38 (Googlebot) 82 connections • 40.77.167.88 (Bingbot) 65 connections • 157.55.39.183 (UptimeRobot) 48 connections To whitelist: csf -a <IP> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ INTEGRATION WITH LIVE MONITOR: - Press 'c' during live monitoring to run optimizer - Recommendation updates based on detected DDoS/SYN floods - Quick Actions panel shows: "Press 'c' to run CT_LIMIT optimizer" - Help screen updated with 'c' key USAGE: 1. Standalone: modules/security/optimize-ct-limit.sh 2. From live monitor: Press 'c' during monitoring 3. With custom period: optimize-ct-limit.sh 48 (48 hours) SAFETY: - Automatic backup of csf.conf before changes - Minimum thresholds (50/80/100) prevent too-aggressive limits - Option to apply or just view recommendations - Full report saved to /tmp for review INTELLIGENCE: - Uses actual traffic data, not guesses - Accounts for legitimate high-connection sources - Prevents blocking search engines and monitoring - Adapts to each server's unique traffic patterns FILES MODIFIED: - modules/security/optimize-ct-limit.sh (NEW - 650 lines) - modules/security/live-attack-monitor.sh - Added 'c' key handler (line 1019-1024) - Updated Quick Actions recommendation (line 438) - Updated help screen (line 1045) - Updated footer keys (line 457) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
1064 lines
39 KiB
Bash
Executable File
1064 lines
39 KiB
Bash
Executable File
#!/bin/bash
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################################################################################
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# Live Network Security Monitor - ENHANCED with Intelligence
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################################################################################
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# Purpose: Real-time monitoring with bot intelligence and threat scoring
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# Version: 2.0 - Intelligence Mode
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# Features:
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# - Bot classification using learned signatures
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# - IP reputation DB integration
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# - Real-time threat scoring (0-100)
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# - Attack vector detection
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# - Quick action blocking system
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# - Ban tracking and history
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################################################################################
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# Get script directory
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
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source "$SCRIPT_DIR/lib/common-functions.sh"
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source "$SCRIPT_DIR/lib/system-detect.sh"
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source "$SCRIPT_DIR/lib/ip-reputation.sh"
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source "$SCRIPT_DIR/lib/bot-signatures.sh"
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source "$SCRIPT_DIR/lib/attack-patterns.sh"
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# Require root
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if [ "$EUID" -ne 0 ]; then
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print_error "This script must be run as root"
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exit 1
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fi
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# Color definitions for threat levels
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CRITICAL_COLOR='\033[1;41;97m' # White on Red background
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HIGH_COLOR='\033[1;31m' # Bold Red
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MEDIUM_COLOR='\033[1;33m' # Bold Yellow
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LOW_COLOR='\033[0;36m' # Cyan
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SAFE_COLOR='\033[0;32m' # Green
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INFO_COLOR='\033[0;37m' # White
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BOLD='\033[1m' # Bold text
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NC='\033[0m'
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# Configuration
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REFRESH_INTERVAL=2 # Seconds between dashboard refreshes
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MAX_DISPLAY_LINES=20
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THREAT_THRESHOLD_CRITICAL=80
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THREAT_THRESHOLD_HIGH=60
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THREAT_THRESHOLD_MEDIUM=40
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# Temporary files for tracking
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TEMP_DIR="/tmp/live-monitor-$$"
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SNAPSHOT_DIR="/var/lib/server-toolkit/live-monitor"
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mkdir -p "$TEMP_DIR" "$SNAPSHOT_DIR" 2>/dev/null
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touch "$TEMP_DIR/recent_events"
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touch "$TEMP_DIR/ip_data"
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echo "0" > "$TEMP_DIR/event_counter"
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# Save snapshot of IP data (for persistence across restarts)
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save_snapshot() {
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{
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for ip in "${!IP_DATA[@]}"; do
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echo "$ip=${IP_DATA[$ip]}"
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done
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} > "$SNAPSHOT_DIR/ip_data_snapshot" 2>/dev/null
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}
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# Cleanup function
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cleanup() {
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echo ""
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echo "Stopping monitoring processes..."
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# Save snapshot before exit
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save_snapshot
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# Kill all child processes
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pkill -P $$ 2>/dev/null
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# Wait a moment for background jobs
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sleep 1
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# Clean up temp directory
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rm -rf "$TEMP_DIR" 2>/dev/null
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# Restore cursor
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command -v tput &>/dev/null && tput cnorm
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echo "✓ Cleanup complete (snapshot saved)"
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exit 0
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}
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trap cleanup EXIT INT TERM
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# Statistics counters
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declare -A IP_DATA # Stores: IP -> score|hits|bot_type|attacks|ban_count
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declare -A ATTACK_TYPE_COUNTER
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TOTAL_THREATS=0
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START_TIME=$(date +%s)
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MAX_TRACKED_IPS=500 # Prevent memory overflow
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# Load persistent data from previous sessions if exists
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if [ -f "$SNAPSHOT_DIR/ip_data_snapshot" ]; then
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while IFS='=' read -r ip data; do
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[ -n "$ip" ] && IP_DATA[$ip]="$data"
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done < "$SNAPSHOT_DIR/ip_data_snapshot"
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fi
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# Hide cursor for cleaner display
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command -v tput &>/dev/null && tput civis
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################################################################################
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# Intelligence Functions
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################################################################################
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# Get or create IP intelligence data
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# Returns: score|hits|bot_type|attacks|ban_count|rep_score
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get_ip_intelligence() {
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local ip="$1"
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# Check if we have cached data
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if [ -n "${IP_DATA[$ip]}" ]; then
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echo "${IP_DATA[$ip]}"
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return 0
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fi
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# Query IP reputation database
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local rep_data=$(lookup_ip "$ip" 2>/dev/null)
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if [ -n "$rep_data" ]; then
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# Parse: IP|HIT_COUNT|REP_SCORE|COUNTRY|ATTACK_FLAGS|...
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IFS='|' read -r _ db_hits rep_score country attack_flags _ _ _ notes ban_count _ <<< "$rep_data"
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# Initialize with learned data
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local score=${rep_score:-0}
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local hits=${db_hits:-0}
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local bot_type="unknown"
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local attacks=$(decode_attack_flags "$attack_flags" 2>/dev/null | tr ',' ' ' || echo "")
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ban_count=${ban_count:-0}
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# Cache it
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IP_DATA[$ip]="$score|$hits|$bot_type|$attacks|$ban_count|$rep_score"
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echo "${IP_DATA[$ip]}"
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else
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# New IP - initialize
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IP_DATA[$ip]="0|0|unknown||0|0"
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echo "${IP_DATA[$ip]}"
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fi
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}
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# Update IP intelligence
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update_ip_intelligence() {
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local ip="$1"
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local url="$2"
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local user_agent="$3"
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local method="${4:-GET}"
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# Get current data
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local current=$(get_ip_intelligence "$ip")
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IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "$current"
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# Increment hits
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hits=$((hits + 1))
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# Classify bot if unknown
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if [ "$bot_type" = "unknown" ] && [ -n "$user_agent" ]; then
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bot_type=$(classify_bot_type "$user_agent")
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fi
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# Detect attacks in URL
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local new_attacks=$(detect_all_attacks "$url" "$method")
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if [ -n "$new_attacks" ]; then
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# Add to attack list (unique)
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if [ -z "$attacks" ]; then
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attacks="$new_attacks"
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else
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attacks="$attacks,$new_attacks"
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fi
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# Remove duplicates
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attacks=$(echo "$attacks" | tr ',' '\n' | sort -u | tr '\n' ',' | sed 's/,$//')
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# Update attack type counter
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IFS=',' read -ra ATTACK_ARRAY <<< "$new_attacks"
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for attack in "${ATTACK_ARRAY[@]}"; do
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((ATTACK_TYPE_COUNTER["$attack"]++))
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done
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# Calculate attack score
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local attack_score=$(calculate_attack_score "$new_attacks")
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score=$((score + attack_score))
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((TOTAL_THREATS++))
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fi
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# Request volume scoring
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if [ $hits -gt 100 ]; then
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score=$((score + 5))
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elif [ $hits -gt 50 ]; then
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score=$((score + 3))
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elif [ $hits -gt 20 ]; then
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score=$((score + 1))
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fi
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# Adjust score based on bot type
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case "$bot_type" in
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legit|ai|monitor)
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# Legitimate bots - reduce score
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score=$((score - 5))
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[ $score -lt 0 ] && score=0
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;;
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suspicious)
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# Suspicious bots - increase score
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score=$((score + 10))
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;;
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esac
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# Cap at 100
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[ $score -gt 100 ] && score=100
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# Check if we're tracking too many IPs (memory protection)
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if [ ${#IP_DATA[@]} -ge $MAX_TRACKED_IPS ]; then
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# Remove lowest scoring IPs
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local to_remove=()
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for check_ip in "${!IP_DATA[@]}"; do
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local check_score=$(echo "${IP_DATA[$check_ip]}" | cut -d'|' -f1)
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[ "$check_score" -lt 10 ] && to_remove+=("$check_ip")
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done
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# Remove up to 100 low-score IPs
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local removed=0
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for remove_ip in "${to_remove[@]}"; do
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unset IP_DATA[$remove_ip]
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((removed++))
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[ $removed -ge 100 ] && break
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done
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fi
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# Update cached data
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IP_DATA[$ip]="$score|$hits|$bot_type|$attacks|$ban_count|$rep_score"
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# Update IP reputation DB in background (if score > 0)
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if [ $score -gt 0 ]; then
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(update_ip_reputation "$ip" 1 "$score" 0 "Live monitor: $new_attacks" >/dev/null 2>&1) &
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fi
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}
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# Get threat level from score
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get_threat_level() {
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local score="$1"
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if [ "$score" -ge "$THREAT_THRESHOLD_CRITICAL" ]; then
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echo "CRITICAL"
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elif [ "$score" -ge "$THREAT_THRESHOLD_HIGH" ]; then
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echo "HIGH"
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elif [ "$score" -ge "$THREAT_THRESHOLD_MEDIUM" ]; then
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echo "MEDIUM"
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else
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echo "LOW"
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fi
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}
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# Get color for threat level
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get_threat_color() {
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local level="$1"
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case "$level" in
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CRITICAL) echo "$CRITICAL_COLOR" ;;
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HIGH) echo "$HIGH_COLOR" ;;
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MEDIUM) echo "$MEDIUM_COLOR" ;;
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LOW) echo "$LOW_COLOR" ;;
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SAFE) echo "$SAFE_COLOR" ;;
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*) echo "$INFO_COLOR" ;;
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esac
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}
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# Get bot color
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get_bot_color() {
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local bot_type="$1"
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case "$bot_type" in
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legit) echo "$SAFE_COLOR" ;;
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ai) echo '\033[0;34m' ;; # Blue
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monitor) echo "$MEDIUM_COLOR" ;;
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suspicious) echo "$HIGH_COLOR" ;;
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*) echo "$INFO_COLOR" ;;
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esac
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}
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################################################################################
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# Dashboard Display Functions
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################################################################################
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draw_header() {
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clear
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local uptime=$(($(date +%s) - START_TIME))
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local uptime_str=$(printf "%02d:%02d:%02d" $((uptime/3600)) $((uptime%3600/60)) $((uptime%60)))
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# Read event counter from file (updated by subshell)
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local event_count=$(cat "$TEMP_DIR/event_counter" 2>/dev/null || echo "0")
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echo -e "${CRITICAL_COLOR}╔════════════════════════════════════════════════════════════════════════════╗${NC}"
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echo -e "${CRITICAL_COLOR}║ 🚨 LIVE SECURITY MONITOR - INTELLIGENCE MODE 🧠 ║${NC}"
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echo -e "${CRITICAL_COLOR}╚════════════════════════════════════════════════════════════════════════════╝${NC}"
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echo -e "${INFO_COLOR}Runtime: ${uptime_str} | Events: ${event_count} | Threats: ${TOTAL_THREATS} | Monitoring...${NC}"
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echo ""
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}
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draw_intelligence_panel() {
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echo -e "${HIGH_COLOR}┌─ THREAT INTELLIGENCE ──────────────────────────────────────────────────────┐${NC}"
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# Get top IPs by threat score
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local count=0
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for ip in "${!IP_DATA[@]}"; do
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IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "${IP_DATA[$ip]}"
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echo "$score|$ip|$hits|$bot_type|$attacks|$ban_count|$rep_score"
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done | sort -t'|' -k1 -rn | head -10 | while IFS='|' read -r score ip hits bot_type attacks ban_count rep_score; do
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local level=$(get_threat_level "$score")
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local color=$(get_threat_color "$level")
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local bot_color=$(get_bot_color "$bot_type")
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# Build status line
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local status_line=$(printf "%-15s" "$ip")
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status_line+=$(printf " Score:%-3s" "$score")
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status_line+=$(printf " Hits:%-4s" "$hits")
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# Bot type indicator
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case "$bot_type" in
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legit) status_line+=" ✅BOT" ;;
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ai) status_line+=" 🤖AI" ;;
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monitor) status_line+=" 📊MON" ;;
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suspicious) status_line+=" ⚠️ SUS" ;;
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*) status_line+="" ;;
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esac
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# Threat level
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status_line+=$(printf " [%-8s]" "$level")
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# Attacks
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if [ -n "$attacks" ]; then
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# Show first attack type
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local first_attack=$(echo "$attacks" | cut -d',' -f1)
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local icon=$(get_attack_icon "$first_attack")
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status_line+=" $icon$(echo "$attacks" | cut -d',' -f1)"
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fi
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# Ban count
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if [ "$ban_count" -gt 0 ]; then
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status_line+=" 🚫x$ban_count"
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fi
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# Known threat indicator
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if [ "$rep_score" -gt 0 ]; then
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status_line+=" [KNOWN]"
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fi
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echo -e "${color}${status_line}${NC}"
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done
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echo -e "${HIGH_COLOR}└────────────────────────────────────────────────────────────────────────────┘${NC}"
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echo ""
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}
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draw_attack_breakdown() {
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echo -e "${MEDIUM_COLOR}┌─ ATTACK VECTORS ───────────────────────────────────────────────────────────┐${NC}"
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if [ ${#ATTACK_TYPE_COUNTER[@]} -eq 0 ]; then
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echo -e "${LOW_COLOR} No attacks detected yet...${NC}"
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else
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for attack_type in "${!ATTACK_TYPE_COUNTER[@]}"; do
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local count="${ATTACK_TYPE_COUNTER[$attack_type]}"
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local icon=$(get_attack_icon "$attack_type")
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local color=$(get_attack_color "$attack_type")
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printf "${color} ${icon} %-20s %5d${NC}\n" "$attack_type" "$count"
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done | sort -t' ' -k3 -rn | head -5
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fi
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echo -e "${MEDIUM_COLOR}└────────────────────────────────────────────────────────────────────────────┘${NC}"
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echo ""
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}
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draw_live_feed() {
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echo -e "${HIGH_COLOR}┌─ LIVE THREAT FEED ─────────────────────────────────────────────────────────┐${NC}"
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if [ -f "$TEMP_DIR/recent_events" ] && [ -s "$TEMP_DIR/recent_events" ]; then
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tail -n "$MAX_DISPLAY_LINES" "$TEMP_DIR/recent_events"
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else
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echo -e "${LOW_COLOR} Waiting for events...${NC}"
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fi
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echo -e "${HIGH_COLOR}└────────────────────────────────────────────────────────────────────────────┘${NC}"
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echo ""
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}
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draw_quick_actions() {
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echo -e "${MEDIUM_COLOR}┌─ QUICK ACTIONS & RECOMMENDATIONS ─────────────────────────────────────────┐${NC}"
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# Get blockable IPs (score >= 60, not already blocked)
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local blockable_count=0
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local blockable_ips=""
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local has_ddos=0
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local has_ssh_bruteforce=0
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local high_conn_count=0
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for ip in "${!IP_DATA[@]}"; do
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IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "${IP_DATA[$ip]}"
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# Check attack patterns
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[[ "$attacks" =~ DDOS ]] && has_ddos=1
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[[ "$attacks" =~ BRUTEFORCE ]] && has_ssh_bruteforce=1
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# Skip if score too low for blocking
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[ "$score" -lt 60 ] && continue
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# Quick check - only verify if CSF/iptables commands available
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# Don't check on every refresh (too slow)
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blockable_count=$((blockable_count + 1))
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blockable_ips+="$ip "
|
|
done
|
|
|
|
# Check for high connection counts
|
|
if [ -f "$TEMP_DIR/recent_events" ]; then
|
|
high_conn_count=$(grep -c "HIGH_CONN_COUNT" "$TEMP_DIR/recent_events" 2>/dev/null || echo "0")
|
|
fi
|
|
|
|
# IP Blocking Recommendations
|
|
if [ $blockable_count -gt 0 ]; then
|
|
echo -e "${HIGH_COLOR} ⚠️ $blockable_count high-threat IPs ready to block${NC}"
|
|
echo -e "${MEDIUM_COLOR} → Press 'b' to open blocking menu${NC}"
|
|
else
|
|
echo -e "${SAFE_COLOR} ✓ No IPs requiring immediate blocks${NC}"
|
|
fi
|
|
|
|
# Intelligent Firewall Recommendations
|
|
local recommendations=0
|
|
|
|
if [ $has_ddos -eq 1 ] || [ $high_conn_count -gt 0 ]; then
|
|
echo -e "${HIGH_COLOR} ⚠️ DDoS/SYN Flood Detected - Firewall Protection Recommended${NC}"
|
|
echo -e "${MEDIUM_COLOR} → Enable SYNFLOOD protection: ${BOLD}csf -e SYNFLOOD${NC}"
|
|
echo -e "${MEDIUM_COLOR} → Optimize CT_LIMIT: ${BOLD}Press 'c' to run CT_LIMIT optimizer${NC}"
|
|
echo -e "${MEDIUM_COLOR} → Or manual: ${BOLD}modules/security/optimize-ct-limit.sh${NC}"
|
|
recommendations=1
|
|
fi
|
|
|
|
if [ $has_ssh_bruteforce -eq 1 ]; then
|
|
local ssh_attacks=$(grep -c "SSH_BRUTEFORCE" "$TEMP_DIR/recent_events" 2>/dev/null || echo "0")
|
|
if [ $ssh_attacks -gt 5 ]; then
|
|
echo -e "${HIGH_COLOR} ⚠️ SSH Bruteforce ($ssh_attacks attempts) - Strengthen SSH Security${NC}"
|
|
echo -e "${MEDIUM_COLOR} → Lower LF_SSHD trigger: ${BOLD}Edit /etc/csf/csf.conf → LF_SSHD=\"3\"${NC}"
|
|
echo -e "${MEDIUM_COLOR} → Enable PortKnocking or change SSH port${NC}"
|
|
recommendations=1
|
|
fi
|
|
fi
|
|
|
|
if [ $recommendations -eq 0 ]; then
|
|
echo ""
|
|
fi
|
|
|
|
echo -e "${INFO_COLOR} Keys: 'b' Block | 'c' CT_LIMIT | 's' Stats | 'r' Refresh | 'h' Help | 'q' Quit${NC}"
|
|
|
|
echo -e "${MEDIUM_COLOR}└────────────────────────────────────────────────────────────────────────────┘${NC}"
|
|
}
|
|
|
|
################################################################################
|
|
# Quick Action Menu
|
|
################################################################################
|
|
|
|
show_blocking_menu() {
|
|
# Pause monitoring
|
|
local monitoring_paused=1
|
|
|
|
clear
|
|
print_banner "Quick IP Blocking"
|
|
echo ""
|
|
echo "Select IPs to block (1-hour temporary ban):"
|
|
echo ""
|
|
|
|
# Build array of blockable IPs
|
|
local -a blockable_list=()
|
|
for ip in "${!IP_DATA[@]}"; do
|
|
IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "${IP_DATA[$ip]}"
|
|
|
|
# Skip if score too low or already blocked
|
|
[ "$score" -lt 60 ] && continue
|
|
is_ip_blocked "$ip" 2>/dev/null && continue
|
|
|
|
blockable_list+=("$ip|$score|$hits|$attacks")
|
|
done
|
|
|
|
if [ ${#blockable_list[@]} -eq 0 ]; then
|
|
echo "No IPs meet blocking criteria (score >= 60)"
|
|
echo ""
|
|
read -p "Press Enter to continue..."
|
|
return
|
|
fi
|
|
|
|
# Check if any IPs to block
|
|
if [ ${#blockable_list[@]} -eq 0 ]; then
|
|
echo ""
|
|
echo -e "${SAFE_COLOR}No IPs meet blocking criteria (score >= 60 and not already blocked)${NC}"
|
|
echo ""
|
|
read -p "Press Enter to continue..."
|
|
return
|
|
fi
|
|
|
|
# Sort by score
|
|
IFS=$'\n' blockable_list=($(sort -t'|' -k2 -rn <<<"${blockable_list[*]}"))
|
|
unset IFS
|
|
|
|
# Display IPs
|
|
local idx=1
|
|
for entry in "${blockable_list[@]}"; do
|
|
IFS='|' read -r ip score hits attacks <<< "$entry"
|
|
local level=$(get_threat_level "$score")
|
|
local color=$(get_threat_color "$level")
|
|
|
|
printf "${color} %2d) %-15s Score:%-3s Hits:%-5s Attacks: %s${NC}\n" \
|
|
"$idx" "$ip" "$score" "$hits" "${attacks:-none}"
|
|
|
|
((idx++))
|
|
done
|
|
|
|
echo ""
|
|
echo -e "${BOLD}Options:${NC}"
|
|
echo " 1-${#blockable_list[@]}) Block specific IP"
|
|
echo " a) Block ALL high-threat IPs (score >= 80)"
|
|
echo " 0) Cancel"
|
|
echo ""
|
|
read -p "Select option: " choice
|
|
|
|
if [ "$choice" = "0" ]; then
|
|
return
|
|
elif [ "$choice" = "a" ]; then
|
|
# Block all IPs with score >= 80
|
|
local blocked=0
|
|
for entry in "${blockable_list[@]}"; do
|
|
IFS='|' read -r ip score hits attacks <<< "$entry"
|
|
[ "$score" -lt 80 ] && continue
|
|
|
|
echo ""
|
|
block_ip_temporary "$ip" 1 "Auto-block: High threat (score $score)"
|
|
((blocked++))
|
|
done
|
|
|
|
echo ""
|
|
echo "Blocked $blocked IPs"
|
|
read -p "Press Enter to continue..."
|
|
elif [[ "$choice" =~ ^[0-9]+$ ]] && [ "$choice" -ge 1 ] && [ "$choice" -le ${#blockable_list[@]} ]; then
|
|
# Block specific IP
|
|
local entry="${blockable_list[$((choice-1))]}"
|
|
IFS='|' read -r ip score hits attacks <<< "$entry"
|
|
|
|
echo ""
|
|
block_ip_temporary "$ip" 1 "Manual block from live monitor (score $score)"
|
|
|
|
echo ""
|
|
read -p "Press Enter to continue..."
|
|
else
|
|
echo "Invalid option"
|
|
read -p "Press Enter to continue..."
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Log Monitoring
|
|
################################################################################
|
|
|
|
monitor_apache_logs() {
|
|
# Try multiple log locations
|
|
local log_files=()
|
|
|
|
# Set default if not defined by system-detect.sh
|
|
local LOG_DIR="${SYS_LOG_DIR:-/var/log/apache2/domlogs}"
|
|
|
|
# Main access log
|
|
if [ -f "${LOG_DIR}/access_log" ]; then
|
|
log_files+=("${LOG_DIR}/access_log")
|
|
elif [ -f "/var/log/httpd/access_log" ]; then
|
|
log_files+=("/var/log/httpd/access_log")
|
|
elif [ -f "/var/log/apache2/access.log" ]; then
|
|
log_files+=("/var/log/apache2/access.log")
|
|
fi
|
|
|
|
# Domain logs (cPanel domlogs)
|
|
if [ -d "${LOG_DIR}" ]; then
|
|
# Find recent domain logs (modified in last hour)
|
|
while IFS= read -r domain_log; do
|
|
[ -f "$domain_log" ] && log_files+=("$domain_log")
|
|
done < <(find "${LOG_DIR}" -type f \( -name "*.com" -o -name "*.net" -o -name "*.org" \) 2>/dev/null | head -5)
|
|
fi
|
|
|
|
if [ ${#log_files[@]} -eq 0 ]; then
|
|
echo "ERROR: No accessible Apache log files found" >> "$TEMP_DIR/recent_events"
|
|
echo "Checked: ${LOG_DIR}, /var/log/httpd, /var/log/apache2" >> "$TEMP_DIR/recent_events"
|
|
return 1
|
|
fi
|
|
|
|
# Monitor all log files
|
|
local event_count=0
|
|
tail -f "${log_files[@]}" 2>/dev/null | while read -r line; do
|
|
# Increment event counter (update file every 10 events for performance)
|
|
((event_count++))
|
|
if [ $((event_count % 10)) -eq 0 ]; then
|
|
echo "$event_count" > "$TEMP_DIR/event_counter"
|
|
fi
|
|
|
|
# Parse Apache combined log format (supports IPv4 and IPv6)
|
|
# Note: bytes field can be - or number, so use [0-9-]+
|
|
if [[ "$line" =~ ^([0-9a-f.:]+)\ -\ -\ \[([^\]]+)\]\ \"([A-Z]+)\ ([^\"]+)\ [^\"]+\"\ ([0-9]+)\ ([0-9-]+)\ \"[^\"]*\"\ \"([^\"]+)\" ]]; then
|
|
local ip="${BASH_REMATCH[1]}"
|
|
local timestamp="${BASH_REMATCH[2]}"
|
|
local method="${BASH_REMATCH[3]}"
|
|
local url="${BASH_REMATCH[4]}"
|
|
local status="${BASH_REMATCH[5]}"
|
|
local bytes="${BASH_REMATCH[6]}"
|
|
local user_agent="${BASH_REMATCH[7]}"
|
|
|
|
# Skip local/private IPs and server's own IP
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]] || \
|
|
[[ "$ip" =~ ^169\.254\. ]] || \
|
|
[[ "$ip" == "localhost" ]] || \
|
|
[[ "$ip" == "::1" ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Update intelligence
|
|
update_ip_intelligence "$ip" "$url" "$user_agent" "$method"
|
|
|
|
# Get updated data
|
|
local intel=$(get_ip_intelligence "$ip")
|
|
IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "$intel"
|
|
|
|
# Determine if this is a threat
|
|
local level=$(get_threat_level "$score")
|
|
|
|
# Log all traffic with attacks, or score > 0, or suspicious bots
|
|
# This ensures we see everything interesting, not just high scores
|
|
if [ "$score" -gt 0 ] || [ -n "$attacks" ] || [ "$bot_type" = "suspicious" ]; then
|
|
local color=$(get_threat_color "$level")
|
|
local time_str=$(date +"%H:%M:%S")
|
|
|
|
# Build log line
|
|
local log_line="${color}[${time_str}] $ip"
|
|
log_line+=" | Score:$score [$level]"
|
|
|
|
# Show bot type if interesting
|
|
if [ "$bot_type" = "suspicious" ] || [ "$bot_type" = "ai" ]; then
|
|
log_line+=" | Bot:$bot_type"
|
|
fi
|
|
|
|
if [ -n "$attacks" ]; then
|
|
local first_attack=$(echo "$attacks" | cut -d',' -f1)
|
|
local icon=$(get_attack_icon "$first_attack")
|
|
log_line+=" | $icon$first_attack"
|
|
fi
|
|
|
|
log_line+=" | $url${NC}"
|
|
|
|
echo -e "$log_line" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
fi
|
|
done &
|
|
}
|
|
|
|
################################################################################
|
|
# Main Loop
|
|
################################################################################
|
|
|
|
################################################################################
|
|
# SSH Attack Monitoring
|
|
################################################################################
|
|
|
|
monitor_ssh_attacks() {
|
|
# Monitor SSH brute force attempts from /var/log/secure
|
|
local secure_log="/var/log/secure"
|
|
|
|
if [ ! -f "$secure_log" ]; then
|
|
# Try alternative location (Debian/Ubuntu)
|
|
secure_log="/var/log/auth.log"
|
|
fi
|
|
|
|
if [ -f "$secure_log" ]; then
|
|
tail -n 0 -F "$secure_log" 2>/dev/null | while read -r line; do
|
|
# Detect failed SSH login attempts
|
|
if echo "$line" | grep -qi "Failed password\|authentication failure\|Invalid user"; then
|
|
# Extract IP address
|
|
local ip=$(echo "$line" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | head -1)
|
|
|
|
if [ -n "$ip" ]; then
|
|
# Skip local/private IPs
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Process as BRUTEFORCE attack
|
|
local current_data="${IP_DATA[$ip]:-0|0|human||0|0}"
|
|
IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "$current_data"
|
|
|
|
# Increment hits
|
|
hits=$((hits + 1))
|
|
|
|
# Add BRUTEFORCE to attacks if not already present
|
|
if [[ ! "$attacks" =~ BRUTEFORCE ]]; then
|
|
if [ -z "$attacks" ]; then
|
|
attacks="BRUTEFORCE"
|
|
else
|
|
attacks="${attacks},BRUTEFORCE"
|
|
fi
|
|
fi
|
|
|
|
# Calculate new score
|
|
score=$(calculate_attack_score "$attacks")
|
|
|
|
# Update IP_DATA
|
|
IP_DATA[$ip]="$score|$hits|$bot_type|$attacks|$ban_count|$rep_score"
|
|
|
|
# Log to reputation DB
|
|
flag_ip_attack "$ip" "BRUTEFORCE" 0 "SSH failed login attempt" >/dev/null 2>&1 &
|
|
|
|
# Log event
|
|
local time_str=$(date +"%H:%M:%S")
|
|
local level=$(get_threat_level "$score")
|
|
local color=$(get_threat_color "$level")
|
|
local icon=$(get_attack_icon "BRUTEFORCE")
|
|
|
|
echo -e "${color}[${time_str}] $ip | Score:$score [$level] | ${icon}SSH_BRUTEFORCE | Hits:$hits${NC}" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
fi
|
|
done &
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Firewall Block Monitoring
|
|
################################################################################
|
|
|
|
monitor_firewall_blocks() {
|
|
# Monitor CSF/iptables blocks in real-time from /var/log/messages
|
|
local messages_log="/var/log/messages"
|
|
|
|
if [ ! -f "$messages_log" ]; then
|
|
# Try alternative location
|
|
messages_log="/var/log/syslog"
|
|
fi
|
|
|
|
if [ -f "$messages_log" ]; then
|
|
tail -n 0 -F "$messages_log" 2>/dev/null | while read -r line; do
|
|
# Detect firewall blocks (CSF, iptables, kernel blocks)
|
|
if echo "$line" | grep -qiE "Firewall|iptables.*DENY|iptables.*DROP|CSF.*block"; then
|
|
# Extract IP address
|
|
local ip=$(echo "$line" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | head -1)
|
|
|
|
if [ -n "$ip" ]; then
|
|
# Skip local/private IPs
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Log firewall block
|
|
local time_str=$(date +"%H:%M:%S")
|
|
echo -e "${LOW_COLOR}[${time_str}] $ip | FIREWALL_BLOCK | Blocked by firewall${NC}" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
fi
|
|
done &
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# cPHulk Monitoring
|
|
################################################################################
|
|
|
|
monitor_cphulk_blocks() {
|
|
# Monitor cPHulk blocks (cPanel security system)
|
|
if [ -x "/usr/local/cpanel/bin/cphulk_pam_ctl" ] || command -v whmapi1 &>/dev/null; then
|
|
(
|
|
declare -A SEEN_BLOCKS
|
|
while true; do
|
|
# Query cPHulk for blocked IPs
|
|
whmapi1 cphulkd_list_blocks 2>/dev/null | grep -E "ip:" | while read -r line; do
|
|
local ip=$(echo "$line" | awk '{print $2}')
|
|
|
|
if [ -n "$ip" ] && [ -z "${SEEN_BLOCKS[$ip]}" ]; then
|
|
SEEN_BLOCKS[$ip]=1
|
|
|
|
# Skip local/private IPs
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Process as BRUTEFORCE attack (cPHulk blocks login attempts)
|
|
local current_data="${IP_DATA[$ip]:-0|0|human||0|0}"
|
|
IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "$current_data"
|
|
|
|
# Add BRUTEFORCE to attacks
|
|
if [[ ! "$attacks" =~ BRUTEFORCE ]]; then
|
|
if [ -z "$attacks" ]; then
|
|
attacks="BRUTEFORCE"
|
|
else
|
|
attacks="${attacks},BRUTEFORCE"
|
|
fi
|
|
fi
|
|
|
|
# Calculate score
|
|
score=$(calculate_attack_score "$attacks")
|
|
hits=$((hits + 1))
|
|
|
|
# Update IP_DATA
|
|
IP_DATA[$ip]="$score|$hits|$bot_type|$attacks|$ban_count|$rep_score"
|
|
|
|
# Log event
|
|
local time_str=$(date +"%H:%M:%S")
|
|
local level=$(get_threat_level "$score")
|
|
local color=$(get_threat_color "$level")
|
|
|
|
echo -e "${color}[${time_str}] $ip | Score:$score [$level] | 🔐CPHULK_BLOCK | Blocked by cPHulk${NC}" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
done
|
|
sleep 10 # Poll every 10 seconds
|
|
done
|
|
) &
|
|
fi
|
|
}
|
|
|
|
################################################################################
|
|
# Network Attack Monitoring (SYN floods, port scans, DDoS)
|
|
################################################################################
|
|
|
|
monitor_network_attacks() {
|
|
# Monitor kernel logs and network statistics for SYN floods, port scans, etc.
|
|
local kern_log="/var/log/kern.log"
|
|
|
|
# Try different log locations
|
|
if [ ! -f "$kern_log" ]; then
|
|
kern_log="/var/log/messages"
|
|
fi
|
|
|
|
# Monitor kernel/firewall logs for network attacks
|
|
if [ -f "$kern_log" ]; then
|
|
tail -n 0 -F "$kern_log" 2>/dev/null | while read -r line; do
|
|
# Detect SYN flood patterns
|
|
if echo "$line" | grep -qiE "SYN flood|possible SYN flooding|TCP: Possible SYN flooding"; then
|
|
local ip=$(echo "$line" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | head -1)
|
|
|
|
if [ -n "$ip" ]; then
|
|
# Skip local/private IPs
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Process as DDOS attack
|
|
local current_data="${IP_DATA[$ip]:-0|0|human||0|0}"
|
|
IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "$current_data"
|
|
|
|
# Add DDOS to attacks
|
|
if [[ ! "$attacks" =~ DDOS ]]; then
|
|
if [ -z "$attacks" ]; then
|
|
attacks="DDOS"
|
|
else
|
|
attacks="${attacks},DDOS"
|
|
fi
|
|
fi
|
|
|
|
# Calculate score (DDOS is high severity)
|
|
score=$(calculate_attack_score "$attacks")
|
|
hits=$((hits + 1))
|
|
|
|
# Update IP_DATA
|
|
IP_DATA[$ip]="$score|$hits|$bot_type|$attacks|$ban_count|$rep_score"
|
|
|
|
# Log to reputation DB
|
|
flag_ip_attack "$ip" "DDOS" 0 "SYN flood detected" >/dev/null 2>&1 &
|
|
|
|
# Log event
|
|
local time_str=$(date +"%H:%M:%S")
|
|
local level=$(get_threat_level "$score")
|
|
local color=$(get_threat_color "$level")
|
|
|
|
echo -e "${color}[${time_str}] $ip | Score:$score [$level] | 💥SYN_FLOOD | Network attack${NC}" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
fi
|
|
|
|
# Detect port scan attempts
|
|
if echo "$line" | grep -qiE "port.*scan|stealth scan|SYN-FIN scan|NULL scan"; then
|
|
local ip=$(echo "$line" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | head -1)
|
|
|
|
if [ -n "$ip" ]; then
|
|
# Skip local/private IPs
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Process as SCANNER attack
|
|
local current_data="${IP_DATA[$ip]:-0|0|human||0|0}"
|
|
IFS='|' read -r score hits bot_type attacks ban_count rep_score <<< "$current_data"
|
|
|
|
# Add PORT_SCAN to attacks (using ADMIN_PROBE for now - 5 points)
|
|
if [[ ! "$attacks" =~ ADMIN_PROBE ]]; then
|
|
if [ -z "$attacks" ]; then
|
|
attacks="ADMIN_PROBE"
|
|
else
|
|
attacks="${attacks},ADMIN_PROBE"
|
|
fi
|
|
fi
|
|
|
|
# Calculate score
|
|
score=$(calculate_attack_score "$attacks")
|
|
hits=$((hits + 1))
|
|
|
|
# Update IP_DATA
|
|
IP_DATA[$ip]="$score|$hits|$bot_type|$attacks|$ban_count|$rep_score"
|
|
|
|
# Log event
|
|
local time_str=$(date +"%H:%M:%S")
|
|
local level=$(get_threat_level "$score")
|
|
local color=$(get_threat_color "$level")
|
|
|
|
echo -e "${color}[${time_str}] $ip | Score:$score [$level] | 🔎PORT_SCAN | Network reconnaissance${NC}" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
fi
|
|
done &
|
|
fi
|
|
|
|
# Monitor netstat for high connection counts (possible DDoS)
|
|
if command -v netstat &>/dev/null || command -v ss &>/dev/null; then
|
|
(
|
|
declare -A CONNECTION_COUNT
|
|
declare -A ALERT_SENT
|
|
while true; do
|
|
# Use ss if available (faster), otherwise netstat
|
|
if command -v ss &>/dev/null; then
|
|
# Count SYN_RECV connections per IP (sign of SYN flood)
|
|
while read -r ip count; do
|
|
if [ "$count" -gt 20 ]; then # More than 20 SYN_RECV connections
|
|
if [ -z "${ALERT_SENT[$ip]}" ]; then
|
|
ALERT_SENT[$ip]=1
|
|
|
|
# Skip local/private IPs
|
|
if [[ "$ip" =~ ^127\. ]] || \
|
|
[[ "$ip" =~ ^10\. ]] || \
|
|
[[ "$ip" =~ ^192\.168\. ]] || \
|
|
[[ "$ip" =~ ^172\.(1[6-9]|2[0-9]|3[01])\. ]]; then
|
|
continue
|
|
fi
|
|
|
|
# Log high connection count
|
|
local time_str=$(date +"%H:%M:%S")
|
|
echo -e "${HIGH_COLOR}[${time_str}] $ip | 💥HIGH_CONN_COUNT | $count SYN_RECV connections (possible DDoS)${NC}" >> "$TEMP_DIR/recent_events"
|
|
fi
|
|
else
|
|
# Reset alert if connections drop
|
|
unset ALERT_SENT[$ip]
|
|
fi
|
|
done < <(ss -tn state syn-recv 2>/dev/null | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | sort | uniq -c | awk '$1 > 5 {print $2, $1}')
|
|
fi
|
|
|
|
sleep 15 # Check every 15 seconds
|
|
done
|
|
) &
|
|
fi
|
|
}
|
|
|
|
# Start all log monitoring sources
|
|
monitor_apache_logs
|
|
monitor_ssh_attacks
|
|
monitor_firewall_blocks
|
|
monitor_cphulk_blocks
|
|
monitor_network_attacks
|
|
|
|
# Periodic snapshot saving in background
|
|
(
|
|
while true; do
|
|
sleep 300 # Save every 5 minutes
|
|
save_snapshot
|
|
done
|
|
) &
|
|
|
|
# Main dashboard loop
|
|
LOOP_COUNT=0
|
|
while true; do
|
|
draw_header
|
|
draw_intelligence_panel
|
|
draw_attack_breakdown
|
|
draw_live_feed
|
|
draw_quick_actions
|
|
|
|
# Periodic cleanup (every 50 loops = ~100 seconds)
|
|
((LOOP_COUNT++))
|
|
if [ $((LOOP_COUNT % 50)) -eq 0 ]; then
|
|
# Trim event log to last 1000 lines
|
|
if [ -f "$TEMP_DIR/recent_events" ]; then
|
|
tail -1000 "$TEMP_DIR/recent_events" > "$TEMP_DIR/recent_events.tmp" 2>/dev/null
|
|
mv "$TEMP_DIR/recent_events.tmp" "$TEMP_DIR/recent_events" 2>/dev/null
|
|
fi
|
|
fi
|
|
|
|
# Non-blocking input with timeout
|
|
read -t $REFRESH_INTERVAL -n 1 key
|
|
|
|
case "$key" in
|
|
b|B)
|
|
show_blocking_menu
|
|
;;
|
|
c|C)
|
|
# Run CT_LIMIT optimizer
|
|
clear
|
|
"$SCRIPT_DIR/modules/security/optimize-ct-limit.sh"
|
|
read -p "Press Enter to return to monitor..."
|
|
;;
|
|
q|Q)
|
|
cleanup
|
|
;;
|
|
r|R)
|
|
# Force refresh
|
|
continue
|
|
;;
|
|
s|S)
|
|
# Show stats
|
|
clear
|
|
show_ip_reputation_stats
|
|
read -p "Press Enter to continue..."
|
|
;;
|
|
h|H|\?)
|
|
# Show help
|
|
clear
|
|
print_banner "Keyboard Controls"
|
|
echo ""
|
|
echo "Available Commands:"
|
|
echo " ${BOLD}b${NC} - Open IP blocking menu (batch or individual)"
|
|
echo " ${BOLD}c${NC} - Run CT_LIMIT optimizer (analyze traffic & recommend limit)"
|
|
echo " ${BOLD}s${NC} - Show IP reputation database statistics"
|
|
echo " ${BOLD}r${NC} - Force refresh display"
|
|
echo " ${BOLD}h${NC} - Show this help screen"
|
|
echo " ${BOLD}q${NC} - Quit and save snapshot"
|
|
echo ""
|
|
echo "Features:"
|
|
echo " • Real-time bot classification (legit/AI/monitor/suspicious)"
|
|
echo " • Attack vector detection (SQL, XSS, RCE, etc.)"
|
|
echo " • Threat scoring (0-100 scale)"
|
|
echo " • IP reputation DB integration"
|
|
echo " • CSF/iptables temporary bans (1 hour default)"
|
|
echo " • Memory protection (max ${MAX_TRACKED_IPS} IPs tracked)"
|
|
echo " • Auto-save every 5 minutes + on exit"
|
|
echo ""
|
|
read -p "Press Enter to continue..."
|
|
;;
|
|
esac
|
|
done
|