home-assistant.io/source/_cookbook/webserver_details.markdown

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layout	title	description	date	sidebar	comments	sharing	footer	ha_category
page	Details about the web server	Use nmap to scan your Home Assistant instance	2016-10-06 08:00	true	false	true	true	Infrastructure

It was only a matter of time till the first queries for tools like https://www.shodan.io to search for Home Assistant instances showed up.

To get an idea about how your Home Assistant instance looks like for network scanner, you can use nmap. The nmap tool is already available if you are using the nmap device tracker.

$ nmap -sV -p 8123 --script=http-title,http-headers 192.168.1.3

Starting Nmap 7.12 ( https://nmap.org ) at 2016-10-06 10:01 CEST
Nmap scan report for 192.168.1.3 (192.168.1.3)
Host is up (0.00011s latency).
PORT     STATE SERVICE VERSION
8123/tcp open  http    CherryPy wsgiserver
| http-headers: 
|   Content-Type: text/html; charset=utf-8
|   Content-Length: 4309
|   Connection: close
|   Date: Thu, 06 Oct 2016 08:01:31 GMT
|   Server: Home Assistant
|
|_  (Request type: GET)
|_http-server-header: Home Assistant
|_http-title: Home Assistant

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 6.70 seconds