Netopia 430 S/T, Справочное руководство

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7-1
Chapter 7
Security
The Netopia ISDN Router provides a number of security features to
help protect its configuration screens and your local network from
unauthorized access. Although these features are optional, it is
strongly recommended that you use them, as appropriate for your
par ticular situation.
This chapter is divided into five main sections:
■
“Suggested security measures” on page 7-2 , lists actions for
blocking potential security holes.
■
“User accounts,” beginning on page 7-2 , shows you how to set
up name/password combinations to protect the Netopia ISDN
Router’s configuration screens.
■ “Telnet access” on page 7-5 , shows you how to control access
to the Netopia ISDN Router by those using the Telnet protocol.
■
“Calling number authentication (CNA),” beginning on page 7-6 ,
expains how to verify that an incoming call is originating from
an expected site.
■
“About filters and filter sets,” beginning on page 7-9 , and
“Working with IP filters and filter sets,” beginning on page 7-19 ,
have information on what filters are, how they work, how to
customize them, and how to use them in sets. For information
on IPX filters and filter sets, see
“IPX filters,” beginning on
page 5-11 .