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bro-ids

bro ids for nodejs

The idea is to do processing events from BRO IDS in nodejs - this is a simple first step by parsing the bro log files 'online' and generate new events when any of the logs gets modified.

the setup of bro itself

Enable JSON logging to your 'site/local.bro'

@load tuning/json-logs

install this module

npm install bro-ids

Use the events in node.js

Maybe you simply want to store the events to Redis, Crate, Elasticsearch whatever without waiting for the BRO team to hack this in C++ or bro scripts (they are nice - but not for generic programming). Or imagine that you make your own version of fail2ban or scan back when you recognize a port scan.

UNIX timestamps of the events are converted to JavaScript timestamps and event_source contains origin of Event (name of log in 3 version with path, without, and without extension .log). event listeners must be registered to the basename of the log file, e.g. http.log would need a registration for 'http'.

    var bro = require ('bro-ids')
    // directory with the bro logs
    var b = new bro('./testdata')
    // start watching the files
    b.watch()
 
    b.on ('http', function (e) {
        console.log (e)
    })
 
    b.on ('conn', function (e) {
        console.log (e)
    })
 
    b.on ('ssl', function (e) {
        console.log (e)
    })
 
    b.on ('x509', function (e) {
        console.log (e)
    })
 
    b.on ('file', function (e) {
        console.log (e)
    })
 
    b.on ('weird', function (e) {
        console.log (e)
    })
 
    b.on ('stats', function (e) {
        console.log (e)
    })
 
 

roadmap

soon

Save position of last read events per file for recovery after restart of the node.js app.

maybe

Filter functions for events using Regex and field names.

Just to have it on the roadmap :)

Implementation of brocolli protocol...