Implementation

• Two hubs
  • Main servers (Sun clones)
  • Dial-up hosts
  • Firewalls to Internet
• Network
  • Permanent (leased lines)
    • TCP/IP over Frame Relay
    • 10 nodes (incl. hubs)
    • 8 offices with LAN's
    • optionally: Black Boxes
  • Dial-up (via X.25)
    • Terminal mode
    • PPP

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