Netopia 430 S/T, Справочное руководство

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7-2 Netopia ISDN Router Reference Guide
Suggested security measures
In addition to setting up user accounts, Telnet access, CNA, and
filters (all of which are covered later in this chapter), there are other
actions you can take to make the Netopia ISDN Router and your
network more secure:
■
If you will be using a PC Card modem for dial-up access through
a telephone line, keep the phone number secure and be sure to
set passwords to protect the configuration screens.
■
If you expect a lot of Internet traffic, consider setting up IP
filters to keep out cer tain types of Internet connections.
■
Change the SNMP community strings (or passwords). The
default community strings are universal and could easily be
known to a potential intruder.
■
Set the answer profile so it must match incoming calls to a
connection profile or hang up.
■
Where possible, insist on using PAP or CHAP to authenticate
connections to and from connection profiles.
■ When using AURP, accept connections only from configured
par tners.
■
Configure the Netopia ISDN Router through the console por t to
ensure that your communications cannot be intercepted.
User accounts
When you first set up and configure the Netopia ISDN Router, no
passwords are required to access the configuration screens.
Anyone could tamper with the router’s configuration by simply
connecting it to a console.
However, by adding user accounts, you can protect the most
sensitive screens from unauthorized access. User accounts are
composed of name/password combinations that can be given to
authorized users.