The Dell OS10 Router must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.
An XCCDF Rule
Description
Fragmented ICMP packets can be generated by hackers for denial-of-service (DoS) attacks such as Ping O' Death and Teardrop. It is imperative that all fragmented ICMP packets are dropped.
- ID
- SV-269873r1052004_rule
- Version
- OS10-RTR-000390
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Ensure all routers have their receive path filter configured to drop all fragmented ICMP packets.
Step 1: Configure a control-plane ACL that drops fragmented ICMP packets.
OS10(config)# ip access-list FILTER_FRAGMENTED_ICMP
OS10(config-ipv4-acl)# seq 10 deny icmp any any log fragment