My VMWare ESXi 4 server appears to be under a Denial of Service attack. I am getting massive packet loss to the server (60+%) and am barely able to load any services on the VMs running on the host.
I have Cacti installed but cannot load it due to the attack. I can SSH in to the VMware host. Are there any commends I can run to either determine where the attack is coming from, or block all IP addresses except mine so that I can load Cacti again to troubleshoot?
esxcli network firewall get but received:
Unknown Object firewall in namespace network
All the VMs with network access are directly connected to the internet, that is, there is a virtual switch between the internet-facing VMs and the router.
EDIT: MDMarra had a great idea: disable the vswitch that the VMs are on. But I can't get the vSphere console to respond long enough to do this. Can this be done through SSH?