Title

The system must not respond to multicast echo requests. (Cat III impact)

Discussion

Multicast echo requests can be useful for reconnaissance of systems and for denial of service attacks.

Check Content

Determine if response to multicast echo requests is disabled. # ipadm show-prop -p _respond_to_echo_multicast -co current ipv4 # ipadm show-prop -p _respond_to_echo_multicast -co current ipv6 If the output of all commands is not "0", this is a finding.

Fix Text

The Network Management profile is required. Disable respond to echo multi-cast for IPv4 and IPv6. # pfexec ipadm set-prop -p _respond_to_echo_multicast=0 ipv4 # pfexec ipadm set-prop -p _respond_to_echo_multicast=0 ipv6

Additional Identifiers

Rule ID: SV-216136r603268_rule

Vulnerability ID: V-216136

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.