Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 1587
ICMP Vulnerabilities
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Defaults none Command Modes ● EXEC ● EXEC Privilege Command History This guide is platform-specific. For command information about other platforms, refer to the relevant Dell Networking OS Command Line Reference Guide. The following is a list of the Dell Networking OS version history for this command. Version Description 9.9(0.0) 9.2(1.0) 8.3.19.0 8.3.11.1 8.3.7.0 7.8.1.0 Introduced on the C9010. Introduced on the Z9500. Introduced on the S4820T. Introduced on the Z9000. Introduced on the S4810. Introduced on the C-Series and S-Series. Related Commands clear ip dhcp snooping - clears the contents of the DHCP binding table. 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 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 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 Networking OS responds to all the ICMP messages. You can configure the Dell Networking OS to suppress the following ICMPv4 and ICMPv6 message types: Table 11. 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) Security 1587
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