Netopia Router PN Series - Manual (Page 202)

9-20 Reference Guide
Community strings
The Read-Only Community String and the Read/Write Community
String are like passwords that must be used by an SNMP manager
querying or configuring the Netopia Router. An SNMP manager using
the Read-Only Community String can examine statistics and
configuration information from the router, but cannot modify the
router’s configuration. An SNMP manager using the Read/Write
Community String can both examine and modify configuration
parameters.
By default, the read-only and read/write community strings are set
to “public” and “private,” respectively. You should change both of
the default community strings to values known only to you and
trusted system administrators.
To change a community string, select it and enter a new value.
Caution! Even if you decide not to use SNMP, you should change the
community strings. This prevents unauthorized access to the
Netopia Router through SNMP.
For more information on security issues, see “Suggested security
measures” on page 7-2 .
SNMP traps
An SNMP trap is an informational message sent from an SNMP
agent (in this case, the Netopia Router) to a manager. When a
manager receives a trap, it may log the trap as well as generate an
alert message of its own.
Standard traps generated by the Netopia Router include the
following:
■ An authentication failure trap is generated when the router
detects an incorrect community string in a received SNMP
packet. Auth. Traps Enable must be On for this trap to be
generated.
■ A cold start trap is generated after the router is reset.