Справочник Пользователя для Netopia R2121

The Netopia R2121 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.

This section covers the following topics:

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, lists actions for blocking potential security holes.

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, shows you how to set up name/password combinations to 

protect the Netopia R2121’s configuration screens.

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, shows you how to control access to the Netopia R2121 by those using the 

Telnet protocol.

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, 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 

.

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In addition to setting up user accounts, Telnet access, and filters (all of which are covered later in this chapter), 
there are other actions you can take to make the Netopia R2121 and your network more secure:

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Change the SNMP community strings (or passwords). The default community strings are universal and 
could easily be known to a potential intruder.

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Set the answer profile so it must match incoming calls to a connection profile.

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Use CallerID.

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Leave the “Enable Dial-in Console Access” option set to No.

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Where possible, insist on using PAP, CHAP, or secure authentication token card to authenticate 
connections to and from connection profiles.

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When using AURP, accept connections only from configured par tners.

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Configure the Netopia R2121 through the serial console por t to ensure that your communications cannot 
be intercepted.