Information
Virtual machines might share virtual switches and VLANs with the IP-based storage configurations. IP-based storage includes vSAN, iSCSI and NFS. This configuration might expose IP-based storage traffic to unauthorized virtual machine users. IP-based storage frequently is not encrypted. It can be viewed by anyone with access to this network. To restrict unauthorized users from viewing the IP-based storage traffic, the IP-based storage network must be logically separated from the production traffic. Configuring the IP-based storage adaptors on separate VLANs or network segments from other VMkernels and Virtual Machines will limit unauthorized users from viewing the traffic.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.
Solution
Configuration of an IP-Based VMkernel will be unique to each environment but for example to modify the IP address and VLAN information to the correct network on a standard switch for an iSCSI VMkernel do the following:
From the vSphere Web Client select the ESXi host and go to Configure >> Networking >> VMkernel adapters. Select the Storage VMkernel (for vSAN only) and click Edit settings >> On the Port properties tab uncheck everything but 'vSAN.' On the IP Settings tab >> Enter the appropriate IP address and subnet information and click OK.
Set the appropriate VLAN ID >> Configure >> Networking >> Virtual switches. Select the Storage portgroup (iSCSI, NFS, vSAN) and click Edit settings >> On the properties tab, enter the appropriate VLAN ID and click OK.