The system must use an appropriate reverse-path filter for IPv6 network traffic, if the system uses IPv6.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
GEN007900-ESXI5-PF	GEN007900-ESXI5-PF	GEN007900-ESXI5-PF_rule		Medium

Description
Reverse-path filtering provides protection against spoofed source addresses by causing the system to discard packets with source addresses for which the system has no route or if the route does not point towards the interface on which the packet arrived. Depending on the role of the system, reverse-path filtering may cause legitimate traffic to be discarded and, therefore, should be used with a more permissive mode or filter, or not at all. Whenever possible, reverse-path filtering should be used. Applicable, but permanent finding - The hypervisor does not support this functionality (No ndd/ipf network tuning facility). The hypervisor's network segment must not be routed, except possibly to networks where other management-related entities are found. Production virtual machine traffic must not be routed to this network.

Description

Reverse-path filtering provides protection against spoofed source addresses by causing the system to discard packets with source addresses for which the system has no route or if the route does not point towards the interface on which the packet arrived. Depending on the role of the system, reverse-path filtering may cause legitimate traffic to be discarded and, therefore, should be used with a more permissive mode or filter, or not at all. Whenever possible, reverse-path filtering should be used. Applicable, but permanent finding - The hypervisor does not support this functionality (No ndd/ipf network tuning facility). The hypervisor's network segment must not be routed, except possibly to networks where other management-related entities are found. Production virtual machine traffic must not be routed to this network.

STIG	Date
VMware ESXi v5 Security Technical Implementation Guide	2013-01-15

Details

Check Text ( C-GEN007900-ESXI5-PF_chk )
ESXi does not support this requirement. This is a permanent finding.

Fix Text (F-GEN007900-ESXI5-PF_fix)
This requirement is a permanent finding and cannot be fixed. An appropriate mitigation for the system must be implemented but this finding cannot be considered fixed.