{
  "nftables": [
    {
      "metainfo": {
        "version": "1.0.9",
        "release_name": "Old Doc Yak #3",
        "json_schema_version": 1
      }
    },
    {
      "table": {
        "family": "inet",
        "name": "named_counter_demo",
        "handle": 1
      }
    },
    {
      "counter": {
        "family": "inet",
        "name": "cnt_http",
        "table": "named_counter_demo",
        "handle": 2,
        "comment": "count both http and https packets",
        "packets": 0,
        "bytes": 0
      }
    },
    {
      "counter": {
        "family": "inet",
        "name": "cnt_smtp",
        "table": "named_counter_demo",
        "handle": 3,
        "packets": 0,
        "bytes": 0
      }
    },
    {
      "chain": {
        "family": "inet",
        "table": "named_counter_demo",
        "name": "IN",
        "handle": 1
      }
    },
    {
      "rule": {
        "family": "inet",
        "table": "named_counter_demo",
        "chain": "IN",
        "handle": 4,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "tcp",
                  "field": "dport"
                }
              },
              "right": 21
            }
          },
          {
            "counter": {
              "packets": 0,
              "bytes": 0
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "inet",
        "table": "named_counter_demo",
        "chain": "IN",
        "handle": 5,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "tcp",
                  "field": "dport"
                }
              },
              "right": 25
            }
          },
          {
            "counter": "cnt_smtp"
          }
        ]
      }
    },
    {
      "rule": {
        "family": "inet",
        "table": "named_counter_demo",
        "chain": "IN",
        "handle": 6,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "tcp",
                  "field": "dport"
                }
              },
              "right": 80
            }
          },
          {
            "counter": "cnt_http"
          }
        ]
      }
    },
    {
      "rule": {
        "family": "inet",
        "table": "named_counter_demo",
        "chain": "IN",
        "handle": 7,
        "expr": [
          {
            "match": {
              "op": "==",
              "left": {
                "payload": {
                  "protocol": "tcp",
                  "field": "dport"
                }
              },
              "right": 443
            }
          },
          {
            "counter": "cnt_http"
          }
        ]
      }
    }
  ]
}