3Com VCX V7000 Installation Manual page 267

Read Community String
Common Agent supports a management station authentication feature.
Answering 'Y' here will allow only a set of pre-identified SNMP management
stations to manage the system. (You will be able to enter IP addresses of
authorized management stations next.
also be configured using EMS or another management station at a later
point.)
Enable management station authentication? [N]
CAUTION: Press the Enter or Return key to accept the default answer
(public). 3Com strongly recommends that users change this string for
security reasons.
Authorized management stations can
Press the Enter or Return key to accept the default answer (N). To enable
management station authentication, enter Y. The script will then accept
the IP addresses of up to four network management stations.
: public
:
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