Exemplos conhecidos

• Filtros de pacotes

  • Routers CISCO, etc
  • PC’s + Drawbridge (MS-DOS, é verdade!)
  • PC’s + WinGate (Windows 9X/NT)

• Firewalls

  • PC’s + IPCHAINS (Linux, etc)
  • PC’s + FWTK (Linux, etc)

• Proxies

  • HTTP Squid (todos os UNIX)
  • HTTP WinGate (Windows 9X/NT)

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