How Brook macOS allows only an app to connect to the Internet

https://www.txthinking.com/talks/
Updated at: 2023-06-13

Example

Only allow Telegram to connect to the Internet. You can get appid from Brook - Menu - Activity

ru.keepcoder.Telegram

Configure

• Fake DNS: On
• TUN: App
• Programmable: On

• Script:

  f := func() {
      if in_dnsquery {
          if in_dnsquery.appid && in_dnsquery.appid != "ru.keepcoder.Telegram" {
              return {block: true}
          }
      }
      if in_address {
          if in_address.appid && in_address.appid != "ru.keepcoder.Telegram" {
              return {block: true}
          }
      }
  }
  out := f()
  

Script

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