Basic HTML version of Foils prepared July 6 99

Foil 71 Firewalls (3)

From Security Infrastructure fo Electronic Commerce and Internet CPS714 Computational Science Information Track -- June 2 and June 7 99. by Roman Markowski
Management and systems personnel often assume that if they have a firewall, they have sufficient security and no further security checks are needed
Some network services (like ftp, http, sendmail, telnet) are passed through the firewall
External
network
Internal
Mail, DNS, NIS, FTP
Print, NFS, WWW
Web
Server
Firewall
DNS
Multi-homed firewall

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