Q:If the OSI model does not match the way in which TCP/IP functions,then
why is it still used?
A:The OSI model is just that;a model.The OSI model was to be originally
used as the model for the development of networking protocols.However,
developers found the specifications too rigid for practical use.Most net-
working protocol suites do not follow the OSI model fully,but do follow the
layered concept that was identified first during the development of the OSI
model.
Q:Why would I want to use a SonicWALL firewall appliance when I could just
use Red Hat Linux with iptables?
A:A SonicWALL firewall appliance is built with one thing in mind;security
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