Networking

DNS

• mess with dns - DNS playground.

Blocklist

• The Big Blocklist Collection

Protocols

• IPv6 Cheat Sheet

Tools

• CanYouSeeMe - Open Port Check Tool.
• mitmproxy - a free and open source interactive HTTPS proxy.

Speedtest

• Fast.com - How fast is your download speed? In seconds, FAST.com's simple Internet speed test will estimate your ISP speed.
• Internet Speed Test

Wireguard

# place wireguard config at `/etc/wireguard/wg0.conf`

wg-quick up wg0
wg-quick down wg0

ssh

# create SSH key
ssh-keygen -t ed25519

# SSH config
Host github.com
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa

# disable password auth
$ sudo nano /etc/ssh/sshd_config
## change this line
PasswordAuthentication no
## restart
$ sudo /etc/init.d/ssh restart

# port forwarding
ssh -L 5000:targethost:5000 NAME@TUNNEL_HOST

# add key to ssh-agent
ssh-add --apple-use-keychain $KEY_PATH

Interface

# disable network interface
sudo ifconfig wlan0 down

Cookbook

Intercepting HTTPS traffic on iOS

1. Start proxy server
2. Specify proxy for Wi-Fi SSID
3. Obtain SSL cert via magic domain
4. Install cert (Settings > General > VPN & Device Management)
5. Trust cert (Settings > General > About > Certificate Trust Settings)

Tools

• Subnet Mask Cheat Sheet