The system must be configured with a default gateway for IPv6 if the system uses IPv6, unless the system is a router.

From VMware ESXi Server 5.0 Security Technical Implementation Guide

Associated with: CCI-000366

SV-51102r1_rule The system must be configured with a default gateway for IPv6 if the system uses IPv6, unless the system is a router.

Vulnerability discussion

If a system has no default gateway defined, the system is at increased risk of man-in-the-middle, monitoring, and Denial-of-Service attacks. NOTE that IPv6 is not enabled by default.

Check content

If the system does not use IPv6, this check is not applicable. From the vSphere Client/vCenter; click on the "Configuration" tab, click on "Networking"; click on "Standard Switch/Properties"; click on "Management NetworkProperties/Edit/IP Settings" and click "Cancel". If the "VMkernel Default Gateway" field is not initialized (valid IP address is required), this is a finding.

Fix text

The following fix text applies only if the system uses IPv6. From the vSphere Client/vCenter; click on the "Configuration" tab; click on "Networking"; click on "Standard Switch/Properties"; click on "Management NetworkProperties/Edit/IP Settings". Select "Use the following IP settings"; fill in the field(s) (at a minimum, the default gateway IP Address is required) per the local site requirements and click "OK".

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