open-appsec
WebsiteManagement PortalPlaygroundGitHub
  • open-appsec Documentation
  • What is open-appsec?
  • open-appsec Video Tutorials
  • Release Notes
  • Getting started
    • Getting Started
    • Start With Kubernetes
      • Install Using Interactive CLI Tool (Ingress NGINX)
      • Configuration Using Interactive CLI Tool
      • Install Using Helm
      • Install Using Helm - new flow (beta)
      • Configuration Using CRDs
      • Configuration Using CRDs - v1beta2
      • Configuration using CRDs - special options for Large Scale Deployments
        • Using appsec class for assigning separate custom resources to specific deployments
        • Using namespace-scoped custom resources
      • Monitor Events
    • Start With Linux
      • Install open-appsec for Linux
      • Using the open-appsec-ctl Tool
      • Configuration Using Local Policy File (Linux)
      • Local Policy File (Advanced)
      • Local Policy File v1beta2 (beta)
      • Monitor Events
    • Start with Docker
      • Install With Docker (Centrally Managed)
      • Install With Docker (Locally Managed)
      • Deploy With Docker-Compose (Beta)
      • Configuration Using Local Policy File (Docker)
      • Local Policy File (Advanced)
    • Using the Web UI (SaaS)
      • Sign-Up and Login to Portal
      • Agents Deployment
      • Connect Deployed Agents to SaaS Management Using Tool (K8s & Linux)
      • Connect Deployed Agents to SaaS Management Using Helm (K8s)
      • Connect Deployed Agents to SaaS Management (Docker)
      • Create a Profile
      • Protect Additional Assets
      • Monitor Events
    • Using the Advanced Machine Learning Model
  • Concepts
    • Agents
    • Management & Automation
    • Security Practices
    • Contextual Machine Learning
  • SETUP INSTRUCTIONS
    • Setup Web Application Settings
    • Setup Custom Rules and Exceptions
    • Setup Web User Response Pages
    • Setup Log Triggers
    • Setup Behavior Upon Failure
    • Setup Agent Upgrade Schedule
  • Additional Security Engines
    • Anti-Bot
    • API Schema Enforcement
    • Data Loss Prevention (DLP) Rules
    • File Security
    • Intrusion Prevention System (IPS)
    • Rate Limit
  • Snort Rules
    • Import Snort Rules
    • Write Snort Signatures
  • HOW TO
    • Configuration and Learning
      • Track Learning and Move From Learn/Detect to Prevent
      • Configure Contextual Machine Learning for Best Accuracy
      • Track Learning and Local Tuning in Standalone Deployments
      • Move From Detect to Prevent in K8s With Many Ingress Rules
  • Deployment and Upgrade
    • Load the Attachment in Proxy Configuration
    • Upgrade Your Reverse Proxy/API Gateway When an Agent is Installed
    • Integration in GitOps CD (K8s)
    • Build open-appsec Based on Source Code
  • Management Web UI
    • Track Agent Status
    • Delete or Reset Management Tenant (SaaS)
    • Disconnect an open-appsec agent from Central Management
  • Integrations
    • About Integrations With 3rd Party Solutions
    • CrowdSec
      • CrowdSec Bouncer Support
      • CrowdSec Intelligence Sharing Using open-appsec Parser/Scenario
    • NGINX Proxy Manager
      • Install NGINX Proxy Manager with open-appsec managed from NPM WebUI
      • Install NGINX Proxy Manager with open-appsec managed from central WebUI (SaaS)
      • Frequently Asked Questions
      • How to Migrate from an Existing NGINX Proxy Manager Deployment and Keep Configuration
    • NPMplus
    • Docker SWAG
      • Install Docker SWAG with open-appsec (locally managed)
      • How to connect locally managed Docker SWAG with open-appsec to WebUI
      • Install Docker SWAG with open-appsec (centrally managed)
      • Deploy Docker SWAG with docker-compose (beta)
      • Frequently Asked Questions
  • Troubleshooting
    • Troubleshooting
    • Troubleshooting Guides
      • Configuration contains ingress/asset with URL which already has asset attached to it in your tenant
      • HTTP Request to Port 80 Not Returning as Expected
      • Agent Fails to Recognize HTTP Transactions with NGINX
      • Agent Not Recognizing Initial HTTP Requests
      • Handling Large Requests (413 Responses)
      • open-appsec on Docker HTTP Transaction Handler Is Set To Ready
      • Traffic Recognition Issue on Single-Core Machine/Connection Timed Out
      • Installing open-appsec on CentOS 7
      • SELinux: checking status and disabling
      • Deploy open-appsec directly on the web server hosting the application to protect
      • object is locked or remote, and therefore cannot be modified
      • Failed to Register to Fog
  • references
    • Agent CLI
    • Event Query Language
    • Events/Logs Schema
    • WAF Comparison Project
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  • For Kong and NGINX
  • For open-appsec

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  1. Troubleshooting
  2. Troubleshooting Guides

Handling Large Requests (413 Responses)

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Last updated 2 months ago

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If large requests are blocked (413 responses) make sure to adjust the limit both for NGINX/Kong and open-appsec

For Kong and NGINX

NGINX

If you encounter 413 responses due to large requests, you need to adjust the request size limits in NGINX. Follow these steps:

  • Refer to for detailed guidance.

  • Modify the client_max_body_size directive in your NGINX configuration file to increase the maximum allowed request size. For example, you can set it to a larger value like 10M (10 megabytes) or as required by your application.

  • After making the changes, save the configuration and reload NGINX using the appropriate command. This is typically done using sudo systemctl reload nginx.

Kong

If you are using Kong as an API gateway and facing 413 errors due to large requests, follow these steps:

  • Refer to the for specific configuration options.

  • Adjust the allowed_payload_size or other relevant keys in your Kong configuration. Increase the maximum payload size to accommodate your application's needs.

  • Save the configuration changes and restart Kong to apply them.

For open-appsec

In Web UI (Central Management)

  • Log in to the open-appsec Web UI.

  • Navigate to the appropriate Asstet tab and choose the relevant asset.

  • Under Threat Prevention->Advanced adjust these settings to accommodate larger requests and save your changes.

  • Enforce to apply changes

For Declarative management

By following these steps, you should be able to resolve issues related to large requests and 413 responses in NGINX, Kong, and open-appsec. Remember to back up your configuration files before making changes, and thoroughly test the adjustments to ensure they meet your application's requirements.

For Docker and Linux adjust the in the local policy file

For Kubernetes adjust the

NGINX documentation
Kong Documentation
practice
Local Policy File (Advanced)
practice CRD
Configuration Using CRDs