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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-26622r1_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 |
|---|---|
| SOLARIS 9 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE | 2015-10-01 |
Details
| Check Text ( C-27660r1_chk ) |
|---|
| Verify the system does not respond to ICMP ECHO_REQUESTs set to broadcast addresses. # ndd /dev/ip ip_respond_to_echo_broadcast If the result is not 0, this is a finding. |
| Fix Text (F-23865r1_fix) |
|---|
| Configure the system to not respond to ICMP ECHO_REQUESTs sent to broadcast addresses. # ndd -set /dev/ip ip_respond_to_echo_broadcast 0 Also add this command to a system startup script. |