29 lines
1.0 KiB
Markdown
29 lines
1.0 KiB
Markdown
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<h1 align="center">
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sgp-internet-ping
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</h1>
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<p align="center">
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A quick analysis of internet latency form Singapore to the rest of the world.
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</p>
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## Scanning the internet
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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.
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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:
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```
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masscan -c scan.conf
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```
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This produces the output file `scan.bin`.
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## Categorising readings by country
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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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```
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```
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