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The system must not respond to ICMPv4 echoes sent to a broadcast address.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22410 | GEN003603 | SV-38797r1_rule | ECSC-1 | Medium |
| Description |
|---|
| Responding to broadcast Internet Control Message Protocol (ICMP) echoes facilitates network mapping and provides a vector for amplification attacks. |
| STIG | Date |
|---|---|
| Draft AIX Security Technical Implementation Guide | 2011-08-17 |
Details
| Check Text ( C-37253r1_chk ) |
|---|
| # /usr/sbin/no –o icmpaddressmask If the value returned is not 0, this is a finding. |
| Fix Text (F-32493r1_fix) |
|---|
| Configure the system to ignore ICMP ECHO_REQUESTs sent to broadcast addresses. #no –po icmpaddressmask=0 |