Setup App and API Protection for Java on Linux

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For faster setup with automatic instrumentation, consider using Single Step APM Instrumentation, which automatically installs the Datadog SDK with no additional configuration required. See Single Step APM Instrumentation for setup instructions.

Once SSI is set up, you can enable App and API Protection by going to your APM service in the Datadog app → Service Configuration section → Enable Application Security Monitoring.

Overview

Datadog Application Security Management (ASM) provides App and API Protection (AAP) capabilities including:

Application Security Monitoring: Real-time threat detection and protection against attacks like SQL injection, XSS, and more
Software Composition Analysis (SCA): Identification of vulnerable dependencies in your codebase
Interactive Application Security Testing (IAST): Runtime vulnerability detection during testing

ASM works by leveraging the Datadog Java tracing library to monitor HTTP requests, analyze patterns, and detect security threats in real-time. The library integrates seamlessly with your existing application without requiring code changes.

For detailed compatibility information, including supported Java versions, frameworks, and deployment environments, see Single Step Instrumentation Compatibility.

This guide explains how to set up App and API Protection (AAP) for Java applications running on Linux. The setup involves:

Installing the Datadog Agent
Configuring your Java application
Enabling AAP monitoring

Prerequisites

Linux operating system
Java application
Root or sudo privileges
Systemd (for service management)

Setup

1. Install the Datadog Agent

Using the one-line install script (recommended)

DD_AGENT_MAJOR_VERSION=7 DD_API_KEY=<YOUR_API_KEY> DD_SITE=<YOUR_DD_SITE> bash -c "$(curl -L https://s3.amazonaws.com/dd-agent/scripts/install_script.sh)"

Manual installation

For Debian/Ubuntu:

sudo apt-get update
sudo apt-get install -y apt-transport-https curl gnupg
sudo sh -c "echo 'deb https://apt.datadoghq.com/ stable 7' > /etc/apt/sources.list.d/datadog.list"
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A2923DFF56EDA6E76E55E492D3A80E30382E94DE
sudo apt-get update
sudo apt-get install -y datadog-agent

For RHEL/CentOS:

sudo yum install -y https://yum.datadoghq.com/rpm/x86_64/datadog-agent-7.x.x-1.x86_64.rpm

Library setup

To enable AAP capabilities, you need the Datadog Java tracing library (version 0.94.0 or higher) installed in your application environment.

Download the library

Download the latest version of the Datadog Java library:

wget -O dd-java-agent.jar 'https://dtdg.co/latest-java-tracer'

Verify compatibility

To check that your service’s language and framework versions are supported for AAP capabilities, see Single Step Instrumentation Compatibility.

Service configuration

Run your application with AAP enabled

Start your Java application with the Datadog agent and AAP enabled:

java -javaagent:/path/to/dd-java-agent.jar -Ddd.appsec.enabled=true -Ddd.service=<MY_SERVICE> -Ddd.env=<MY_ENV> -jar path/to/app.jar

If you want to use Application Security Management without APM tracing functionality, you can deploy with [Standalone App and API Protection][4]. This configuration reduces the amount of APM data sent to Datadog to the minimum required by App and API Protection products.

To enable standalone mode:

Set DD_APM_TRACING_ENABLED=false environment variable
Keep DD_APPSEC_ENABLED=true environment variable
This configuration will minimize APM data while maintaining full security monitoring capabilities

java -javaagent:/path/to/dd-java-agent.jar -Ddd.appsec.enabled=true -Ddd.apm.tracing.enabled=false -Ddd.service=<MY_SERVICE> -Ddd.env=<MY_ENV> -jar path/to/app.jar

Important considerations:

File system requirements: Read-only file systems are not currently supported. The application must have access to a writable /tmp directory.
Service identification: Always specify DD_SERVICE (or -Ddd.service) and DD_ENV (or -Ddd.env) for proper service identification in Datadog.