Who am I ?

Denny Huang

• SITCON 2013, 2014 總召

• Rayark Inc.

• About me

Shell utils for Win

Kenny Huang, Ph.D. 黃勝雄 博士

• 網路之根 – 基礎建設與標準化

• SITCON 2017 - Cybersecurity and Internet Governance 網路安全與網路治理

History of the Internet

OSI

7?

IETF/RFC

RFC 2324

RFC 2468

Network Interface

Predictable Network Interface Names

Ask the man

man [command]

IP

Public IP / Private IP

ip a / ifconfig

Port

Gateway / Netmask

route / traceroute / mtr

TCP / UDP

nc -lvp [port] / nc -v [hostname/ip] [port]

Three-Way Handshake

DNS

dig / nslookup

HTTP

request method / status code / headers

nc -lvp 8080 / curl -v localhost:8080

python3 -m http.server

GET / HTTP/1.1

HTTPS

Cookie / Session

How Browsers Work?

API

Application Programming Interface

JSON

Example

jq / JSON Viewer / JSONView

RESTful

Web crawler / bot

Q & A

Thanks for listening!

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