The system must not send IPv4 ICMP redirects.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
GEN003610-ESXI5-PF	GEN003610-ESXI5-PF	GEN003610-ESXI5-PF_rule		Medium

Description
ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table that could reveal portions of the network topology. Applicable, but permanent finding - The hypervisor does not support this functionality. - The vSphere management network provides access to the vSphere management interface on each component. Services running on the management interface provide an opportunity for an attacker to gain privileged access to the systems. Any remote attack most likely would begin with gaining entry to this network. The vSphere management port group should be in a dedicated VLAN on a common vSwitch. The vSwitch can be shared with production (virtual machine) traffic, as long as the vSphere management port group's VLAN is not used by production virtual machines. Check that the network segment is not routed, except possibly to networks where other management-related entities are found. Production virtual machine traffic must not be routed to this network. The firewall is enabled by default and allows Internet Control Message Protocol (ICMP) pings and communication with DHCP and DNS (UDP only) clients.

Description

ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table that could reveal portions of the network topology. Applicable, but permanent finding - The hypervisor does not support this functionality. - The vSphere management network provides access to the vSphere management interface on each component. Services running on the management interface provide an opportunity for an attacker to gain privileged access to the systems. Any remote attack most likely would begin with gaining entry to this network. The vSphere management port group should be in a dedicated VLAN on a common vSwitch. The vSwitch can be shared with production (virtual machine) traffic, as long as the vSphere management port group's VLAN is not used by production virtual machines. Check that the network segment is not routed, except possibly to networks where other management-related entities are found. Production virtual machine traffic must not be routed to this network. The firewall is enabled by default and allows Internet Control Message Protocol (ICMP) pings and communication with DHCP and DNS (UDP only) clients.

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

Details

Check Text ( C-GEN003610-ESXI5-PF_chk )
ESXi does not support this requirement. This is a permanent finding.

Fix Text (F-GEN003610-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.