The system must not apply reversed source routing to TCP responses.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22412	GEN003605	SV-38799r1_rule	ECSC-1	Medium

Description
Source-routed packets allow the source of the packet to suggest routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures.

STIG	Date
AIX 5.3 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2014-10-03

Details

Check Text ( C-37255r2_chk )
Determine if the system is configured to apply reverse source routing to TCP responses to source-routed packets. # /usr/sbin/no -p nonlocsrcroute If the value is not 0, this is a finding.

Fix Text (F-32495r2_fix)
Configure the system to not apply reverse source routing to TCP responses to source-routed packets. # /usr/sbin/no -po nonlocsrcroute=0