4. The Intranet (cont.) Public/External Internet Users Intranet Clients Servers ERP Legacy systems E-mail servers Web servers Databases Firewalls
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8. The Extranet (cont.) Tunneling Internet Extranet Intranet Firewall Intranet Firewall Suppliers VPN Distributors VPN Customers VPN
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11. Summary : Internet, Intranet, and Extranet Network Typical Type of Type Users Access Information Internet Any individual with dial-up access or LAN Unlimited, public; no restrictions General, public and advertisement Intranet Authorized employees ONLY Private and restricted Specific, corporate and proprietary Extranet Authorized groups from collaborating companies Private and outside authorized partners Shared in authorized collaborating group