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D-Link DNR-4020-16P User Manual
Section 3 - Configuration
SNMPV1/
SNMPV2C
SNMPV3
Enable and enter a password for the Read/Write and Read-Only
community strings here. Change the community string to keep
intruders from getting information about the network setup.
This SNMP version adds encryption and authentication to the
service for better security. You can specify separate Read/Write
versus Read-only name and passwords as well as the type of
encryption to use.
SNMP
If you have SNMP agents that you would like to send traps (such as alarms and
syslog messages) to your NVR, you can enable and configure your SNMP settings
on this page.