The system must not respond to ICMPv6 echo requests sent to a broadcast address.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-23972 | GEN007950 | SV-29786r1_rule | ECSC-1 | Medium |
| Description |
|---|
| Responding to broadcast ICMP echo requests facilitates network mapping and provides a vector for amplification attacks. |
| STIG | Date |
|---|---|
| HP-UX 11.31 Security Technical Implementation Guide | 2017-01-27 |
Details
| Check Text ( None ) |
|---|
| None |
| Fix Text (F-32141r1_fix) |
|---|
| Add an IPF rule to block inbound IPv6 ICMP ECHO_REQUEST packets sent to the all-hosts multicast address. Edit /etc/opt/ipf/ipf6.conf and add a rule such as: block in quick proto icmpv6 from any to ff02::1 icmpv6-type 128 Reload the IPF rules. # ipf -6 -Fa -A -f /etc/opt/ipf/ipf6.conf |