Security4-6 7612-A2-GB20-00June 1997Controlling SNMP AccessThere are three methods for limiting SNMP access. Disable the SNMP management option. Refer to General SNMPManagement Options, Table A-7. Assign SNMP community names and access types. The DSU supportsSNMP Version 1, which provides limited security through the use ofcommunity names. Limit SNMP access through validation of the IP address of each allowedSNMP manager.Assigning SNMP Community Names and Access TypesThe DSU can be managed by an SNMP manager supporting SNMP. Thecommunity name must be supplied by an external SNMP manager accessing anobject in the MIB.To define SNMP community names, follow this menu selection sequence:Main Menu →Configuration →Load Configuration From →Edit →SNMP →General SNMP ManagementRefer to General SNMP Management Options, Table A-7, to: Enable SNMP Management. Assign the SNMP community names of the SNMP Managers that are allowedto access the DSU’s Management Information Base (MIB). Specify Read or Read/Write access for each SNMP community name.Limiting SNMP Access through the IP Addresses of the ManagersThe DSU provides an additional level of security through validation of theIP addresses.The SNMP Management option must be enabled. To control SNMP access withIP addresses, follow this menu selection sequence:Main Menu →Configuration →Load Configuration From →Edit →SNMP →SNMP NMS Security OptionsRefer to SNMP NMS Security Options, Table A-8. The SNMP access can belimited by: Enabling NMS IP address validation to perform validation checks on theIP address of an SNMP management system attempting to access the DSU. Specifying read or read-write access for each NMS authorized to access theunit.
