Virtual WAF Requirements

The following table describes the minimum system requirements to install a VMware virtual appliance. Note that these are minimum requirements. If your websites have high traffic load, please refer to the WAF Sizing Guide for some guidance on upsizing the virtual machine.

Components	System Requirements
Guest operating system	CentOS 64-bit
CPU	2 CPUs 64-bit
RAM	4 GB
Disk space	250 GB
Virtual network interface(s)	An interface with an external IP address for management
NIC type	em1000
Encryption/decryption for SSL traffic	AES-NI CPU instruction set for encryption/decryption of SSL traffic on VMs and host OS is recommended
Clustering	For clustering to work, ensure promiscuous mode, forged transmits, and MAC address changes are allowed on the VMware virtual switch (vSwitch) or the port group in the VMware ESX network configuration