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Nmap Scan

Simple program to scan your LAN, identify hosts that are up and what ports are open on them. This info is then stored in mongodb database.

Setup

For OSX use brew to install mongodb:

brew update
brew install mongodb

Then use pip to get the python extensions:

pip install pymongo

Usage

You will need to run this as root using sudo. Unfortunately you have to be root to get the MAC addresses. Since IP addresses can change with DHCP, only the MAC addresses are constant and they are used to identify a host computer (or smart phone, play station, etc).

Python

sudo ./scan_network

MongoDB

Make sure you start the db server with:

 mongod --dbpath db

This will allow you to connect to it.

You can track clients from the command line tool mongo. Now list the databases and select one for use.

> show dbs
admin    (empty)
local    0.078GB
network  0.078GB
test     (empty)
> use network
switched to db network
> db.network.find().count()
11
>

How many machines found to date:

db.network.find().count()

Search for a particular machine using its MAC address (Note: there should only be one listing, if there is more, then something got messed up):

db.network.find({"addresses" : { "mac" : "40:30:04:F0:8C:5A"}})

List all machines found:

db.network.find()

Delete all records and start over:

db.network.remove('')

Insert a new record host.

db.network.insert( host )

To Do

  • can't seem to get the computer names, nmap doesn't know them and bonjour seems useless. Avahi under linux has a command line tool to convert IP's into hostnames.