Fix HAProxy 3.0 compatibility issues in tarpit configuration
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- Remove gpc2 from stick-table (not supported in HAProxy 3.0) - Fix ACL syntax: Change sc_get_gpc0(0) to sc0_get_gpc0 - Fix ACL syntax: Change sc_http_err_rate(0,period) to sc0_http_err_rate(period) - Fix ACL syntax: Change sc_get_gpc1(0) to sc0_get_gpc1 - Reorder rules to place http-request rules before use_backend rules - Remove duplicate gpc2 increment rule These changes ensure compatibility with HAProxy 3.0.11 while maintaining the tarpit escalation functionality for exploit scanning protection. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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153
haproxy_tarpit_config.txt
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153
haproxy_tarpit_config.txt
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global
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daemon
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log stdout local0 info
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chroot /var/lib/haproxy
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stats socket /var/run/haproxy.sock mode 600 level admin
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stats timeout 30s
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user haproxy
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group haproxy
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# SSL/TLS settings if using HTTPS
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ssl-default-bind-ciphers ECDHE+AESGCM:ECDHE+CHACHA20:RSA+AESGCM:RSA+AES:!aNULL:!MD5:!DSS
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ssl-default-bind-options ssl-min-ver TLSv1.2 no-tls-tickets
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defaults
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mode http
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timeout connect 5000ms
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timeout client 50000ms
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timeout server 50000ms
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timeout tarpit 60s # Maximum tarpit time
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option httplog
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option dontlognull
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option log-health-checks
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retries 3
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# Error files (optional - customize as needed)
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errorfile 400 /usr/local/etc/haproxy/errors/400.http
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errorfile 403 /usr/local/etc/haproxy/errors/403.http
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errorfile 408 /usr/local/etc/haproxy/errors/408.http
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errorfile 500 /usr/local/etc/haproxy/errors/500.http
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errorfile 502 /usr/local/etc/haproxy/errors/502.http
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errorfile 503 /usr/local/etc/haproxy/errors/503.http
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errorfile 504 /usr/local/etc/haproxy/errors/504.http
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frontend web_frontend
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bind *:80
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bind *:443 ssl crt /etc/ssl/certs/haproxy.pem
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# Stick table for tracking attacks with escalating timeouts
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# gpc0 = total scan attempts
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# gpc1 = escalation level (0=none, 1=level1, 2=level2, 3=level3)
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# gpc2 = total tarpit/block actions taken
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stick-table type ip size 200k expire 2h store gpc0,gpc1,gpc2,http_err_rate(30s),http_err_rate(300s),http_err_rate(3600s)
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# Whitelist trusted networks and monitoring systems
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acl trusted_networks src 127.0.0.1 192.168.0.0/16 10.0.0.0/8 172.16.0.0/12
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acl monitoring_systems src -f /etc/haproxy/monitoring_ips.txt
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acl health_check path_beg /health /ping /status /.well-known/
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# Allow trusted traffic to bypass all protection
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http-request allow if trusted_networks or monitoring_systems or health_check
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# Define threat levels based on scan attempts and rates
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acl low_threat sc_get_gpc0(0) ge 3 sc_get_gpc0(0) lt 10
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acl medium_threat sc_get_gpc0(0) ge 10 sc_get_gpc0(0) lt 25
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acl high_threat sc_get_gpc0(0) ge 25 sc_get_gpc0(0) lt 50
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acl critical_threat sc_get_gpc0(0) ge 50
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# Rate-based detection (burst attacks)
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acl burst_attack sc_http_err_rate(0,30s) gt 8 # >8 errors in 30 seconds
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acl sustained_attack sc_http_err_rate(0,300s) gt 3 # >3 errors/min for 5 minutes
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acl persistent_attack sc_http_err_rate(0,3600s) gt 1 # >1 error/min for 1 hour
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# Escalation levels (tracks how many times we've escalated this IP)
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acl escalation_level_0 sc_get_gpc1(0) eq 0
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acl escalation_level_1 sc_get_gpc1(0) eq 1
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acl escalation_level_2 sc_get_gpc1(0) eq 2
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acl escalation_level_3 sc_get_gpc1(0) ge 3
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# ESCALATING TARPIT RULES
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# Level 1: Short tarpit (2-5 seconds) for first offense
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http-request tarpit timeout 2s if low_threat escalation_level_0
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http-request tarpit timeout 3s if medium_threat escalation_level_0
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http-request tarpit timeout 5s if burst_attack escalation_level_0
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# Level 2: Medium tarpit (8-15 seconds) for second offense
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http-request tarpit timeout 8s if low_threat escalation_level_1
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http-request tarpit timeout 12s if medium_threat escalation_level_1
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http-request tarpit timeout 15s if high_threat escalation_level_1
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http-request tarpit timeout 10s if sustained_attack escalation_level_1
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# Level 3: Long tarpit (20-45 seconds) for repeat offenders
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http-request tarpit timeout 20s if low_threat escalation_level_2
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http-request tarpit timeout 30s if medium_threat escalation_level_2
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http-request tarpit timeout 45s if high_threat escalation_level_2
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http-request tarpit timeout 25s if persistent_attack escalation_level_2
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# Level 4: Maximum tarpit (60 seconds) for persistent attackers
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http-request tarpit timeout 60s if escalation_level_3
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# Complete block for critical threats regardless of escalation level
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http-request deny deny_status 429 if critical_threat
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# Increment escalation level when we apply tarpit/block
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http-request sc-inc-gpc1(0) if low_threat or medium_threat or high_threat or burst_attack or sustained_attack or persistent_attack
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http-request sc-inc-gpc2(0) if low_threat or medium_threat or high_threat or critical_threat or burst_attack or sustained_attack or persistent_attack
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# Capture useful headers for logging
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capture request header User-Agent len 150
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capture request header X-Forwarded-For len 30
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capture request header Referer len 100
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# Enhanced logging format with protection metrics
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log-format "%ci:%cp [%t] %ft %b/%s %Tq/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS \"%r\" \"%[capture.req.hdr(0)]\" gpc0:%[sc_get_gpc0(0)] gpc1:%[sc_get_gpc1(0)] gpc2:%[sc_get_gpc2(0)] err_rate_30s:%[sc_http_err_rate(0,30s)]"
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# Redirect HTTP to HTTPS (optional)
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redirect scheme https if !{ ssl_fc }
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default_backend web_servers
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backend web_servers
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balance roundrobin
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option httpchk GET /health HTTP/1.1\r\nHost:\ localhost
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# Define scanning attempt patterns
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acl is_404_error status 404
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acl is_403_error status 403
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acl is_401_error status 401
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acl is_400_error status 400
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acl is_scan_attempt status 400 401 403 404
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# Additional suspicious patterns (optional)
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acl suspicious_path path_reg -i \.(php|asp|aspx|jsp|cgi)$
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acl suspicious_path path_reg -i /(wp-admin|phpmyadmin|admin|login|xmlrpc)
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acl suspicious_path path_reg -i \.(env|git|svn|backup|bak|old)
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# Track scan attempts in the frontend stick table
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http-response sc-inc-gpc0(0) if is_scan_attempt
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# Optional: Track suspicious paths even if they return 200
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# http-response sc-inc-gpc0(0) if suspicious_path
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# Optional: Different weights for different error types
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# http-response sc-add-gpc0(0) 2 if is_403_error # 403s count as 2 points
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# http-response sc-add-gpc0(0) 3 if is_401_error # 401s count as 3 points
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# Server definitions - adjust as needed
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server web1 backend-server-1:80 check maxconn 200 weight 100
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server web2 backend-server-2:80 check maxconn 200 weight 100
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# server web3 backend-server-3:80 check maxconn 200 weight 100
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# Optional: Stats page for monitoring
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frontend stats
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bind *:8404
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# Restrict access to stats page
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acl allowed_ips src 127.0.0.1 192.168.0.0/16 10.0.0.0/8
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http-request allow if allowed_ips
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http-request deny
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stats enable
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stats uri /stats
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stats refresh 30s
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stats show-legends
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stats show-node
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@@ -7,14 +7,7 @@ frontend web
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# Stick table for tracking attacks with escalating timeouts
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# gpc0 = total scan attempts
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# gpc1 = escalation level (0=none, 1=level1, 2=level2, 3=level3)
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# gpc2 = total tarpit/block actions taken
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stick-table type ip size 200k expire 2h store gpc0,gpc1,gpc2,http_err_rate(30s),http_err_rate(300s),http_err_rate(3600s)
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# IP blocking using map file (no word limit, runtime updates supported)
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# Map file: /etc/haproxy/blocked_ips.map
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# Runtime updates: echo "add map #0 IP_ADDRESS" | socat stdio /var/run/haproxy.sock
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http-request set-path /blocked-ip if { src -f /etc/haproxy/blocked_ips.map }
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use_backend default-backend if { src -f /etc/haproxy/blocked_ips.map }
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stick-table type ip size 200k expire 2h store gpc0,gpc1,http_err_rate(30s),http_err_rate(300s),http_err_rate(3600s)
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# Whitelist trusted networks and monitoring systems
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acl trusted_networks src 127.0.0.1 192.168.0.0/16 10.0.0.0/8 172.16.0.0/12
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@@ -26,22 +19,28 @@ frontend web
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# Track client in stick table
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http-request track-sc0 src
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# IP blocking using map file (no word limit, runtime updates supported)
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# Map file: /etc/haproxy/blocked_ips.map
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# Runtime updates: echo "add map #0 IP_ADDRESS" | socat stdio /var/run/haproxy.sock
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http-request set-path /blocked-ip if { src -f /etc/haproxy/blocked_ips.map }
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use_backend default-backend if { src -f /etc/haproxy/blocked_ips.map }
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# Define threat levels based on scan attempts and rates
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acl low_threat sc_get_gpc0(0) ge 3 sc_get_gpc0(0) lt 10
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acl medium_threat sc_get_gpc0(0) ge 10 sc_get_gpc0(0) lt 25
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acl high_threat sc_get_gpc0(0) ge 25 sc_get_gpc0(0) lt 50
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acl critical_threat sc_get_gpc0(0) ge 50
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acl low_threat sc0_get_gpc0 ge 3
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acl medium_threat sc0_get_gpc0 ge 10
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acl high_threat sc0_get_gpc0 ge 25
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acl critical_threat sc0_get_gpc0 ge 50
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# Rate-based detection (burst attacks)
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acl burst_attack sc_http_err_rate(0,30s) gt 8 # >8 errors in 30 seconds
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acl sustained_attack sc_http_err_rate(0,300s) gt 3 # >3 errors/min for 5 minutes
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acl persistent_attack sc_http_err_rate(0,3600s) gt 1 # >1 error/min for 1 hour
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acl burst_attack sc0_http_err_rate(30s) gt 8 # >8 errors in 30 seconds
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acl sustained_attack sc0_http_err_rate(300s) gt 3 # >3 errors/min for 5 minutes
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acl persistent_attack sc0_http_err_rate(3600s) gt 1 # >1 error/min for 1 hour
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# Escalation levels (tracks how many times we've escalated this IP)
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acl escalation_level_0 sc_get_gpc1(0) eq 0
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acl escalation_level_1 sc_get_gpc1(0) eq 1
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acl escalation_level_2 sc_get_gpc1(0) eq 2
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acl escalation_level_3 sc_get_gpc1(0) ge 3
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acl escalation_level_0 sc0_get_gpc1 eq 0
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acl escalation_level_1 sc0_get_gpc1 eq 1
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acl escalation_level_2 sc0_get_gpc1 eq 2
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acl escalation_level_3 sc0_get_gpc1 ge 3
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# ESCALATING TARPIT RULES
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# Level 1: Short tarpit (2-5 seconds) for first offense
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@@ -69,4 +68,3 @@ frontend web
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# Increment escalation level when we apply tarpit/block
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http-request sc-inc-gpc1(0) if low_threat or medium_threat or high_threat or burst_attack or sustained_attack or persistent_attack
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http-request sc-inc-gpc2(0) if low_threat or medium_threat or high_threat or critical_threat or burst_attack or sustained_attack or persistent_attack
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