iftop

Use the power and speed of iftop to get flow rates and totals of traffic incident on a network device.

Note that the user running this process will need capture permissions on the specified device.

Examples of how this is typically done:

linux:

sudo setcap cap_net_raw,cap_net_admin=eip /usr/sbin/iftop

macOS:

sudo chmod +r /dev/bpf*

Usage

constIftopParser=require('iftop');IftopParser.iftopPath="/usr/sbin/iftop";// only if iftop is not on the pathvariftop=newIftopParser("eth0");// set up error handleriftop.on('error',(e)=>{console.error(e);});// set up data handleriftop.on('data',(d)=>{console.log(d);});iftop.start();// optional manipulations after start() has been called (these are passed to iftop)iftop.toggleAggregateSrc();iftop.toggleAggregateDst();iftop.toggleDNSResolution();iftop.togglePortDisplay();

License

ISC