Closes #2112 /claim #2112

📑 Description

This PR adds a new SNMP provider to Keep that enables receiving SNMP traps as alerts. The implementation includes:

• Full SNMP provider implementation with support for v1, v2c, and v3 protocols
• SNMP trap receiver that converts traps to Keep alerts
• Configurable trap port (default: 1162)
• Proper error handling and logging
• Automatic severity mapping from trap data
• Support for both IPv4 and IPv6 trap reception
• Comprehensive configuration validation
• Provider scopes:
  • Read (mandatory): For reading SNMP data from agents
  • Write (optional): For setting SNMP values on agents
  • Trap (optional): For receiving SNMP traps

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• All the tests have passed

ℹ Additional Information

Configuration

The SNMP provider supports the following authentication configurations:

• For v1/v2c:

  • Host
  • Version (v1/v2c)
  • Community string
  • Port (default: 161)
  • Trap port (default: 1162)

• For v3:

  • Host
  • Version (v3)
  • Username
  • Authentication protocol (MD5/SHA)
  • Authentication key
  • Privacy protocol (DES/AES)
  • Privacy key
  • Security level (noAuthNoPriv/authNoPriv/authPriv)
  • Port (default: 161)
  • Trap port (default: 1162)

Alert Generation

SNMP traps are converted to Keep alerts with:

• Automatic severity mapping based on trap data
• Source tracking from agent address
• Detailed trap information in alert description

Testing

The implementation includes tests for:

• Configuration validation
• Error handling scenarios

Breaking Changes

None. This is a new provider that doesn’t affect existing functionality.