4-1

7610-A2-GB20-10 November 1997
Security 4

Security Overview

The DSU provides several methods of security by limiting user access to the ATI
through option settings. Refer to the
ATI Access
section.
Enable the Login Required option to require a Login ID for the:
— Terminal Port
— Telnet Session via the IP interfaces (the Management port or the IMC)
Limit the access:
— Port Access Level option of 1, 2, or 3 for the Terminal port
— Session Access Level option of 1, 2 or 3 for the Telnet Session
Disable the access:
— Telnet Session option
— Management Port Use option
— In-Band Management Channel Rate (bps) option for the IMC
— Dial-In Access option for an External Device
Refer to Effective Access Levels, Table 4-1.
SNMP security is handled through Community Names with access levels and
IP address validation. Refer to the
Controlling SNMP Access
section.