category

VMWare vsphere client

How to Fix :Possible DHCP DOS attack seen on the esx host

DDOSAttack

Symptoms
In NSX-v 6.4.0, you see these symptoms:

  • You see the error: “NSX Alert :Possible DHCP DOS attack on host. (ScreenShot Attached)
    NSX Alert DHCP DOS Attack

Cause

This issue occurs because a new DHCP DoS related security feature was introduced in NSX-v 6.4.0, that may report false positives.

Resolution
This is a known issue affecting VMware NSX for vSphere 6.4.x. Currently, there is no resolution.

Workaround

To work around this issue, disable these warning messages. You can disable these warning messages NSX Manager Central Command Line Interface.

  1. Login to The NSX Manager SSh Console via Admin . Check the Status for the Event Notification
Read The Rest ......

vSphere Hardening – G2 : Configure Host Profiles to monitor and alert on configuration changes

 

Guideline ID : ESXi.enable-host-profiles

Vulnerability Discussion : Monitoring for configuration drift and unauthorized changes is critical to ensuring the security of an ESXi host. Host Profiles provide an automated method for monitoring host configurations against an established template and for providing notification if deviations are detected.

Risk Profile : 1, 2, 3

Description : Configure Host Profiles to monitor and alert on configuration changes

Create Host profile 

  1. Log in to the Webclient of your vCenter server and click on host profile .
    1
  2. click on the + Sign to create new host profile andit will pop up an wizard
    2
  3. Select
Read The Rest ......
Translate »