The system must be configured with a default gateway for IPv4 if the system uses IPv4, unless the system is a router.

From VMware ESXi Server 5.0 Security Technical Implementation Guide

Associated with: CCI-001098

SV-51253r1_rule The system must be configured with a default gateway for IPv4 if the system uses IPv4, 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.

Check content

From the vSphere Client/vCenter: Click on the Configuration tab, Click on the DNS and Routing tabs, and verify that the default gateway information is entered and Click "Cancel". If the default gateway field has not been initialized (IP address is required), this is a finding.

Fix text

From the vSphere Client/vCenter, click on the Configuration tab; click on DNS and Routing; click on Properties/DNS and Routing, Configuration/Routing. Add a default gateway (IP address is required). Click "OK"

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