{
  "seed": 22,
  "nodes": [
    {
      "id": "00000000-0000-0000-0000-000000000201",
      "kind": "pc",
      "ports": [
        {
          "id": "00000000-0000-0000-0000-000000000211",
          "label": "eth0"
        }
      ]
    },
    {
      "id": "00000000-0000-0000-0000-000000000202",
      "kind": "router",
      "ports": [
        {
          "id": "00000000-0000-0000-0000-000000000221",
          "label": "rt1"
        },
        {
          "id": "00000000-0000-0000-0000-000000000222",
          "label": "rt2"
        }
      ]
    },
    {
      "id": "00000000-0000-0000-0000-000000000203",
      "kind": "pc",
      "ports": [
        {
          "id": "00000000-0000-0000-0000-000000000213",
          "label": "eth0"
        }
      ]
    }
  ],
  "links": [
    {
      "id": "00000000-0000-0000-0000-00000000F004",
      "sourceNode": "00000000-0000-0000-0000-000000000201",
      "sourcePort": "00000000-0000-0000-0000-000000000211",
      "targetNode": "00000000-0000-0000-0000-000000000202",
      "targetPort": "00000000-0000-0000-0000-000000000221"
    },
    {
      "id": "00000000-0000-0000-0000-00000000F005",
      "sourceNode": "00000000-0000-0000-0000-000000000202",
      "sourcePort": "00000000-0000-0000-0000-000000000222",
      "targetNode": "00000000-0000-0000-0000-000000000203",
      "targetPort": "00000000-0000-0000-0000-000000000213"
    }
  ],
  "devices": {
    "00000000-0000-0000-0000-000000000201": {
      "ip": "10.0.0.2",
      "mask": "255.255.255.0",
      "gateway": "10.0.0.1"
    },
    "00000000-0000-0000-0000-000000000202": {
      "ip": "10.0.0.1",
      "mask": "255.255.255.0"
    },
    "00000000-0000-0000-0000-000000000203": {
      "ip": "20.0.0.2",
      "mask": "255.255.255.0",
      "gateway": "20.0.0.1"
    }
  },
  "interfaces": [
    {
      "node": "00000000-0000-0000-0000-000000000202",
      "port": "00000000-0000-0000-0000-000000000221",
      "ip": "10.0.0.1",
      "mask": "255.255.255.0"
    },
    {
      "node": "00000000-0000-0000-0000-000000000202",
      "port": "00000000-0000-0000-0000-000000000222",
      "ip": "20.0.0.1",
      "mask": "255.255.255.0"
    }
  ],
  "steps": [
    {
      "op": "bindUdp",
      "node": "00000000-0000-0000-0000-000000000203",
      "port": 5000
    },
    {
      "op": "bindUdp",
      "node": "00000000-0000-0000-0000-000000000203",
      "port": 5001
    },
    {
      "op": "bindUdp",
      "node": "00000000-0000-0000-0000-000000000201"
    },
    {
      "op": "bindUdp",
      "node": "00000000-0000-0000-0000-000000000202",
      "port": 5000
    },
    {
      "op": "sendUdp",
      "socket": "00000000-0000-0000-0000-000000000003",
      "target": "20.0.0.2",
      "port": 5000,
      "payload": "durch den Router"
    },
    {
      "op": "receiveUdp",
      "socket": "00000000-0000-0000-0000-000000000001",
      "timeout": 500
    },
    {
      "op": "sendUdp",
      "socket": "00000000-0000-0000-0000-000000000003",
      "target": "20.0.0.2",
      "port": 5001,
      "payload": "verboten"
    },
    {
      "op": "receiveUdp",
      "socket": "00000000-0000-0000-0000-000000000002",
      "timeout": 500
    },
    {
      "op": "sendUdp",
      "socket": "00000000-0000-0000-0000-000000000003",
      "target": "255.255.255.255",
      "port": 5000,
      "payload": "Broadcast"
    },
    {
      "op": "receiveUdp",
      "socket": "00000000-0000-0000-0000-000000000004",
      "timeout": 500
    },
    {
      "op": "receiveUdp",
      "socket": "00000000-0000-0000-0000-000000000001",
      "timeout": 500
    },
    {
      "op": "sendUdp",
      "socket": "00000000-0000-0000-0000-000000000001",
      "payload": "zurueck"
    },
    {
      "op": "receiveUdp",
      "socket": "00000000-0000-0000-0000-000000000003",
      "timeout": 500
    }
  ],
  "firewalls": {
    "00000000-0000-0000-0000-000000000202": {
      "active": true,
      "defaultPolicy": "accept",
      "filterUdp": true,
      "rules": [
        {
          "protocol": "udp",
          "port": 5001,
          "action": "drop"
        }
      ]
    }
  }
}