IP Carefully Creates HTTP or HTTPS agents for node.js that can filter based on IP. Accepts whitelists or blacklists. const Https = require(https);const IPCarefully = require('ipcarefully');const agent = IPCarefully.https({ type: 'blacklist', iplist: ['127.0.0.1'], agent: { maxSockets: 5 }); Https.request({host: 'localhost', agent }); //Socket will error out before connecting