Dell S3100 EMC Command Line Reference Guide for the Series 9.14.2.2 - Page 1656

Usage Information Instead of using the system defined user roles, you can create a new user role that best matches your organization. When you create a new user role, you first inherit permissions from one of the system defined roles. Otherwise you would have to create a user role from scratch. You then restrict commands or add commands to that role. For information about this topic, See Modifying Command Permissions for Roles. NOTE: You can change user role permissions on system pre-defined user roles or user-defined user roles. Important Points to Remember Consider the following when creating a user role: • Only the system administrator and user-defined roles inherited from the system administrator can create roles and usernames. Only the system administrator, security administrator, and roles inherited from these can use the role command to modify command permissions. The security administrator and roles inherited by security administrator can only modify permissions for commands they already have access to. • Make sure you select the correct role you want to inherit. NOTE: If you inherit a user role, you cannot modify or delete the inheritance. If you want to change or remove the inheritance, delete the user role and create it again. If the user role is in use, you cannot delete the user role. role mode { { { addrole | deleterole } role-name } | reset } command - Modifies (adds or deletes) command permissions for newly created user roles and system defined roles. Related Commands • role mode { { { addrole | deleterole } role-name } | reset } command - modifies (adds or deletes) command permissions for newly created user roles and system defined roles. ICMP Vulnerabilities The internet control message protocol (ICMP) is a network-layer internet protocol that provides message packets to report errors and other information regarding IP packet processing back to the source. Dell EMC Networking OS mainly addresses the following ICMP vulnerabilities: • ICMP Mask Reply • ICMP Timestamp Request • ICMP Replies • IP ID Values Randomness You can configure the Dell EMC Networking OS to drop ICMP reply messages. When you configure the drop icmp command, the system drops the ICMP reply messages from the front end and management interfaces. By default, the Dell EMC Networking OS responds to all the ICMP messages. You can configure the Dell EMC Networking OS to suppress the following ICMPv4 and ICMPv6 message types: Table 7. Suppressed ICMPv4 message types ICMPv4 Message Types Echo reply (0) All sub types of destination unreachable (3) Source quench (4) Redirect (5) Router advertisement (9) 1656 Security