@corellium/nfqueue/demo/demo.js

Netfilter nfqueue binding

var nfq = require('../nfqueue');
var pcap = require('pcap');

var counter = 0;

console.log('Creating queue handler...');

nfq.createQueueHandler(1, function(nfpacket) {
  console.log('packet received');
  // console.log(JSON.stringify(nfpack, null, 2));

  var packet = pcap.decode.ip(nfpacket.payload, 0);
  console.log(' ip src=' + packet.saddr);
  console.log(' ip dst=' + packet.daddr);
  console.log(' ip proto=' + packet.protocol_name);

  nfpacket.setVerdict((counter++ % 2) ? nfq.NF_DROP : nfq.NF_ACCEPT);
});

console.log('Queue handler created!');

if (process.env.TEST_MODE) {
  console.log('Test mode active, exiting after createQueueHandler');
  process.exit(0);
}