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Mastering Intranet and Internet Technology
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Communications Access Control

Routers and Filtering


Router and Firewall Comparison

Router and Firewall Comparison
Action Router FirewallHost/Server
Packet Filtering X
Socket Filtering X
Prevent IP Spoofing X
Prevent Port Attacks X
Passwords X
Authentication X


(Dis)Allowing TELNET Access

(Dis)Allowing FTP Access

Protecting your own Systems

Security Alert Services

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NBS Internet Marketing Last Update: 14/09/98 Web Author: Geoff May
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