General

On this page you specify the IP address and the SNMP port of the new device for monitoring by LANmonitor. If authentication is required to read-out the device data or perform actions on the device, these access credentials must also be stored in LANmonitor.

You must permanently store the credentials for read-only access as a minimum; otherwise the program cannot connect to the device. Permanently storing write-access credentials is optional. This saves you having to enter the credentials manually each time you send an action to LANmonitor for the first time.

Interface

• IP/Name: Enter the IP address of the device. You can also enter a domain name (DN or FQDN) or a NetBIOS name. This name is checked at every access. LANmonitor stores and uses the resolved IP address. If this check is not possible, then LANmonitor takes the last IP address that was last used successfully.
• SNMP port: Specify the port under which the SNMP service on the device is accessed. The default is this 161. Depending on the setting in the device (see Setup parameter 2.9.21) or ARF context, a different port may be required.

Authentication

In this section, choose how and with what credentials you authenticate yourself to the device. The setting you need depends on whether you have restricted the SNMP read-access to the device and have defined a community of your own. Learn more about this in the Section Configuring SNMP read-only access.

Network protocol

Select whether the LANmonitor accesses the device via SNMPv3 (encrypted), or via SNMPv2 (unencrypted, not recommended). Access via SNMPv3 is supported as of LCOS 9.20.

SNMPv3

• User: Specify the user for SNMPv3 access.
• Password: Specify the password for SNMPv3 access. This is usually the master device password.

SNMPv2

• SNMP read-only community: Use this setting if authentication at the device is handled by
  • the public community public or
  • your own community in the form of a master password or username:password pair
  . You then enter these into the Community field.
• Administrator/Password: Use this setting if authentication at the device is handled by
  • your own community in the form of a username:password pair or
  • the credentials of an administrator account
  . You then specify the user name in the Administrator field and the password in the Password field.

Important: Pay attention to the correct spelling/capitalization, because SNMP access to the device is blocked if the wrong data is entered.

You also have the option of saving the access credentials for device actions (SNMP write community) either for the current session or permanently in LANmonitor. This data is required for all device actions (such as deleting or resetting status values). If you do not store any credentials, the program prompts you for them the next time you attempt to execute an action.

Note: For read-only access, you should preferably specify a read-only community instead of an administrator account, as SNMP packets are transmitted in cleartext with SNMPv2.