![]() If you do, the host compares the source MAC address being transmitted by the operating system with the effective MAC address for its adapter to see if they match. To protect against MAC impersonation, you can set this option to Reject. When the option is set to Accept, ESXi does not compare source and effective MAC addresses. ![]() The setting for the Forged Transmits option affects traffic that is transmitted from a virtual machine. ![]() Quote from VMWare ESXi and vCenter Server 5.1 Documentation > vSphere Security > Securing ESXi Configurations > Securing Standard Switch Ports: Interfaces and virtual machines within the portgroup will be able to see all traffic passing on the vSwitch, but all other portgroups within the same virtual switch do not.Ĭrucial for cluster configuration, where CCP packets are sent from different Source MAC addresses. Quote from VMWare Knowledge Base - How promiscuous mode works at the virtual switch and portgroup levels (1002934): When promiscuous mode is enabled at the portgroup level, objects defined within that portgroup have the option of receiving all incoming traffic on the vSwitch. Their values must be set to Accept under " Security Settings" in the ESXi.Ĭrucial for allowing communication to the Security Gateway VE. The following three options were found to be crucial for cluster of Security Gateways Virtual Edition in Network Mode. Note: Security Settings may change between ESXi configurations and versions.
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