Snmp Trap Receiver Example

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "SNMP Trap Receiver Example",
  "nodes": [
    {
      "parameters": {
        "resource": "trapReceiver",
        "trapOptions": {
          "port": 162,
          "timeout": 60,
          "allowedSources": {
            "sourceList": [
              {
                "source": "192.168.1.0/24"
              },
              {
                "source": "10.0.0.0/8"
              }
            ]
          }
        }
      },
      "id": "b6f0da66-d0a4-4db9-8f0a-7c5a85c7f0f8",
      "name": "SNMP Trap Listener",
      "type": "snmp",
      "typeVersion": 1,
      "position": [
        420,
        300
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict"
          },
          "conditions": [
            {
              "id": "7e8b1e8a-9c7d-4f6e-8a5b-2d9e1c8f7a6b",
              "leftValue": "={{ $json.status }}",
              "rightValue": "received",
              "operator": {
                "type": "string",
                "operation": "equals"
              }
            }
          ],
          "combinator": "and"
        }
      },
      "id": "c3d9e8f2-a1b2-4c5d-8e9f-3a7b9c1d5e6f",
      "name": "Check if Trap Received",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [
        660,
        300
      ]
    },
    {
      "parameters": {
        "content": "\ud83d\udea8 **SNMP Trap Alert!** \ud83d\udea8\n\n**Source:** {{ $json.source.address }}:{{ $json.source.port }}\n**Trap Type:** {{ $json.pdu.type }}\n**SNMP Version:** {{ $json.summary.version }}\n**Enterprise OID:** {{ $json.pdu.enterprise }}\n**Trap OID:** {{ $json.pdu.genericTrap }}.{{ $json.pdu.specificTrap }}\n**Agent Address:** {{ $json.pdu.agentAddr }}\n**Uptime:** {{ $json.pdu.uptime }}\n**Timestamp:** {{ $json.timestamp }}\n\n**Varbinds:**\n{{ $json.varbinds.map(vb => `- ${vb.oid}: ${vb.value} (${vb.type})`).join('\\n') }}",
        "options": {}
      },
      "id": "d4e5f6a7-b8c9-4d0e-8f1a-5b6c7d8e9f0a",
      "name": "Format Trap Alert",
      "type": "n8n-nodes-base.html",
      "typeVersion": 2,
      "position": [
        900,
        240
      ]
    },
    {
      "parameters": {
        "authentication": "none",
        "url": "https://hooks.slack.com/services/YOUR/SLACK/WEBHOOK",
        "sendBody": true,
        "bodyContentType": "json",
        "jsonBody": "{\n  \"text\": \"SNMP Trap Received\",\n  \"blocks\": [\n    {\n      \"type\": \"section\",\n      \"text\": {\n        \"type\": \"mrkdwn\",\n        \"text\": \"*SNMP Trap Alert* \ud83d\udea8\\n\\n*Source:* {{ $json.source.address }}:{{ $json.source.port }}\\n*Type:* {{ $json.pdu.type }}\\n*Version:* {{ $json.summary.version }}\\n*Enterprise:* {{ $json.pdu.enterprise }}\\n*Agent:* {{ $json.pdu.agentAddr }}\\n*Uptime:* {{ $json.pdu.uptime }}\\n*Timestamp:* {{ $json.timestamp }}\"\n      }\n    },\n    {\n      \"type\": \"section\",\n      \"text\": {\n        \"type\": \"mrkdwn\",\n        \"text\": \"*Varbinds:*\\n{{ $json.varbinds.map(vb => `\u2022 ${vb.oid}: ${vb.value} (${vb.type})`).join('\\n') }}\"\n      }\n    }\n  ]\n}",
        "options": {}
      },
      "id": "e5f6a7b8-c9d0-4e1f-8a2b-6c7d8e9f0a1b",
      "name": "Send to Slack",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        1140,
        240
      ]
    },
    {
      "parameters": {
        "content": "\u23f0 **SNMP Trap Listener Timeout**\n\nNo SNMP traps were received during the {{ $json.summary.timeout }} second listening period.\n\n**Configuration:**\n- Port: {{ $json.port }}\n- Allowed Sources: {{ $json.summary.allowedSources }} networks\n- Status: {{ $json.status }}",
        "options": {}
      },
      "id": "f6a7b8c9-d0e1-4f2a-9b3c-7d8e9f0a1b2c",
      "name": "Format Timeout Message",
      "type": "n8n-nodes-base.html",
      "typeVersion": 2,
      "position": [
        900,
        360
      ]
    },
    {
      "parameters": {
        "operation": "log",
        "message": "SNMP Trap Listener timed out - no traps received"
      },
      "id": "a7b8c9d0-e1f2-4a3b-9c4d-8e9f0a1b2c3d",
      "name": "Log Timeout",
      "type": "n8n-nodes-base.noOp",
      "typeVersion": 1,
      "position": [
        1140,
        360
      ]
    }
  ],
  "connections": {
    "SNMP Trap Listener": {
      "main": [
        [
          {
            "node": "Check if Trap Received",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check if Trap Received": {
      "main": [
        [
          {
            "node": "Format Trap Alert",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Format Timeout Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format Trap Alert": {
      "main": [
        [
          {
            "node": "Send to Slack",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format Timeout Message": {
      "main": [
        [
          {
            "node": "Log Timeout",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "staticData": null,
  "tags": [],
  "triggerCount": 0,
  "updatedAt": "2024-12-31T12:00:00.000Z",
  "versionId": "12345"
}

About this workflow

SNMP Trap Receiver Example. Uses snmp, httpRequest. Manual trigger; 6 nodes.

Source: https://github.com/magnetarz/oidyssey/blob/e3e9f6b4264fb245ce5c9ddeef0965606c0f89a3/examples/snmp-trap-receiver.json — original creator credit. Request a take-down →

More Web Scraping workflows → · Browse all categories →

Related workflows

Workflows that share integrations, category, or trigger type with this one. All free to copy and import.