Справочник Пользователя для Netopia PN Series

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 

.

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.