Glue Connection Network Isolation

What this rule checks

Detects Glue JDBC connections without VPC subnet placement or SSL enforcement.

How to fix it

1. 1Set PhysicalConnectionRequirements with SubnetId and SecurityGroupIdList
2. 2Include SSL parameters in the JDBC connection URL

import { CfnConnection } from 'aws-cdk-lib/aws-glue';

new CfnConnection(this, 'JdbcConnection', {
  catalogId: this.account,
  connectionInput: {
    name: 'analytics-db',
    connectionType: 'JDBC',
    connectionProperties: {
      JDBC_CONNECTION_URL: 'jdbc:mysql://db.example.internal:3306/analytics',
      USERNAME: 'etl_user',
      PASSWORD: 'placeholder',
    },
  },
});

import { CfnConnection } from 'aws-cdk-lib/aws-glue';

new CfnConnection(this, 'JdbcConnection', {
  catalogId: this.account,
  connectionInput: {
    name: 'analytics-db',
    connectionType: 'JDBC',
    connectionProperties: {
      JDBC_CONNECTION_URL:
        'jdbc:mysql://db.example.internal:3306/analytics?useSSL=true',
      JDBC_ENFORCE_SSL: 'true',
      USERNAME: 'etl_user',
      PASSWORD: 'placeholder',
    },
    physicalConnectionRequirements: {
      subnetId: 'subnet-0abc123',
      securityGroupIdList: ['sg-0def456'],
      availabilityZone: 'us-east-1a',
    },
  },
});

CDK Insights pinpoints the exact file and line in your CDK source for every finding, so you can jump straight to the fix.

Affected resource types

Intentional? Suppress this finding

Sometimes a flag is deliberate — a genuinely public endpoint, say. You can dismiss glue-connection-network-isolation and the reason is kept in the report, not silently hidden.

In .cdk-insights.json:

{
  "ignoreRules": [
    { "id": "glue-connection-network-isolation", "reason": "Why this is intentional" }
  ]
}

Or inline in your CDK code:

Validations.of(scope).acknowledge({
  id: 'cdk-insights::glue-connection-network-isolation',
  reason: 'Why this is intentional',
});

Use the rule ID glue-connection-network-isolation shown above — not the CDK-* ID from SARIF / GitHub code scanning. To dismiss every finding on one construct instead, use ignorePaths. Suppression docs →

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