Administrator Guide

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)
Router solicitation (10)
Time exceeded (11)
IP header bad (12)
Timestamp request (13)
Timestamp reply (14)
Information request (15)
Information reply (16)
Address mask request (17)
Address mask reply (18)
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