Add section "background"
parent
fe884c5152
commit
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@ -1 +1,4 @@
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**/.DS_Store
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scan*.bin
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scan*.json
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28
README.md
28
README.md
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@ -23,10 +23,36 @@ masscan -c scan.conf
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This produces the output file `scan.bin`.
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## Counting latency
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I need to reduce the data for the five ports per host into a single latency reading for each host.
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But first, I had to convert the scan binary into JSON:
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```
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masscan --readscan scan.bin -oJ scan.json
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go run latency.go -in scan.json -out latency.json
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```
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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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Next, I wrote and used a Go script to group the scans by country:
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```
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go run country.go -in latency.json -db geolite -out country.json
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```
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## Plotting the latency from Singapore by country
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> Not implemented
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I will start with a simple plot of latency to every country from Singapore.
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```
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go run json2csv.go -in country.json -out country.csv
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```
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##
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@ -0,0 +1,9 @@
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package main
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import (
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"log"
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)
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func main() {
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log.Print("comp")
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}
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@ -0,0 +1,10 @@
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package main
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import (
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"log"
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"os"
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)
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func main() {
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log.Print(os.Args[1])
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}
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@ -0,0 +1,9 @@
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package main
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import (
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"log"
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)
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func main() {
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log.Print("comp")
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}
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@ -0,0 +1,9 @@
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package main
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import (
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"log"
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)
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func main() {
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log.Print("comp")
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}
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BIN
poster.png
BIN
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poster.svg
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poster.svg
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<sodipodi:guide
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@ -333,7 +333,7 @@
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id="flowPara6548">Latency is a crucial metric to measure network performance, especially in real-time systems. On the Internet, latency can affect user experience as pages and assets only start loading after one round-trip. With latency data, we can better understand the physical aspects of the Internet, make better decisions on server locations, and gamers can choose a better server closer to Singapore.</flowPara><flowPara
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id="flowPara6576">To measure latency, I scanned the entire Internet with the tool "masscan". More details can be found at <flowSpan
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id="flowSpan6574">https://github.com/serverwentdown/sgp-internet-ping</flowSpan>, together with the data collected.</flowPara><flowPara
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id="flowPara6590">A good overview of the data is the following chart of the top 5 countries with the lowest latency:</flowPara><flowPara
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id="flowPara6618">From that data, we can perform a 2-sample t-test on the latency data to USA and the UK. </flowPara><flowPara
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id="flowPara6672">We can generalise this to any two countries, by applying the same 2-sample t-test to the data. </flowPara></flowRoot> <g
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Reference in New Issue