sgp-internet-ping/README.md

<h1 align="center">
    sgp-internet-ping
</h1>

<p align="center">
    A quick analysis of Internet latency from Singapore to the rest of the world.
</p>

<p align="center">
    <img src="poster.png" alt="poster">
</p>

## Scanning the Internet

To scan the IPv4 Internet, I used the tool [`masscan`](https://github.com/robertdavidgraham/masscan) by security researcher Robert Graham. He has extensively made use of `masscan` in the security research he does. It provides latency measurements up to the millisecond. 

I wrote a configuration file to run `masscan` on the entire Internet with the included exclusion list, and scan the top 5 open ports according to [speedguide.net](https://www.speedguide.net/ports_common.php). It is stored as `scan.conf`. I started the scan with: 

```
masscan -c scan.conf
```

This produces the output file `scan.bin`. 

## Categorising readings by country

To associate an IP address with a country, a geolocation lookup database must be used. I used two sources of geolocation databases; Maxmind's GeoLite2, and Webnet77's IPToCountry; to test the accuracy of either database. 

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