Concept Guide

This module requires NAS for handling the access challenge from the RADIUS server. NAS sends the input OTP in an Access-Request to
the RADIUS server, and the user authentication succeeds or fails depending upon the Access-Accept or Access-Reject response received
at NAS from the RADIUS server.
Conguring the System to Drop Certain ICMP Reply
Messages
You can congure the Dell EMC Networking OS to drop ICMP reply messages. When you congure 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.
• Drop the ICMP or ICMPv6 message type.
drop {icmp | icmp6}
CONFIGURATION mode.
You can congure the Dell EMC Networking OS to suppress the following ICMPv4 and ICMP6 message types:
Table 79. Suppressed ICMP 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)
NOTE: The Dell EMC Networking OS does not suppress the ICMP message type echo request (8).
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