Advanced security administrator

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The NSX-T administrator can use all NSX-T security features, including NSX-T Distributed Firewall and Data Security for Guest Introspection, as shown in Figure 22. The administrator can also add antivirus or antimalware partner solutions. Figure 22. Example of NSX-T security features: NSX-T distributed firewalls are used to create security rules for application and web tiers routed by the Cisco ACI fabric The approach of combining NSX-T security features with Cisco ACI integrated overlay offers the clear advantage of better visibility, as shown in Figure 23. Virtual machines that are part of a security group are also clearly identified as endpoints in the corresponding EPG. Figure 23. Virtual machines that are part of an NSX-T groups are visible inside the APIC EPG It is important to note that, in this model, the use of Cisco ACI contracts is entirely optional. Since we are assuming that the NSX-T DFW will be used to implement filtering or insert security services, the fabric administrator may choose to disable contract enforcement inside the VRF tables to eliminate the need for contracts. However, instead of completely disabling policy inside the VRF, we recommend placing EPGs mapped to the VMware SDN VMM domain in the Preferred group to allow open communication between them while allowing the fabric administrator to use contracts for other EPGs inside the same VRF. This design approach does not limit NSX-T to security features only. Other services, such as using the Edge Nodes for load balancing, can also be used. Full-featured firewalls are also capable of filtering based on URLs, DNS, IP options, packet size, and many other parameters. In addition, Next-Generation Firewalls (NGFWs) are also capable of performing deep packet inspection to provide advanced threat management. It may be desirable to insert more advanced security services to protect north-south or east-west traffic flows, or both. In this context, east-west commonly refers to traffic between virtual machines in vSphere clusters with a common NSX-T installation. Any other traffic must be considered north-south for NSX-T, even if it is traffic to endpoints connected in the fabric. The need for service insertion is not limited to NGFWs but also to other security services such as next-generation network intrusion prevention, or to advanced Application Delivery Controllers (ADCs) that can also perform SSL offload in hardware for high-performance web applications. Figure 24 illustrates the various insertion points available in this design. Because Cisco ACI provides the overlay where all endpoints are connected, organizations can use Cisco ACI service graphs and Policy-Based Redirect to insert services such as physical and virtual NGFWs between tiers without affecting NSX-T service insertion. Figure 24. Advanced services can be added using both Cisco ACI and NSX-T service partners Option 2: Running NSX-T overlays as an application of the Cisco ACI fabric Using the Cisco ACI integrated overlay offers many advantages, and customers who look at NSX-T to implement better security for their vSphere environments are encouraged to follow that model. Here we will explain instead how to best configure Cisco ACI in

Note You must set a BIOS Administrator password before performing this procedure. To set this password, press the F2 key when prompted during system boot to enter the BIOS Setup utility. Then navigate to Security > Set Administrator Password and enter the new password twice as prompted. Procedure Step 1 Enable TPM Support: Watch during bootup for the F2 prompt, and then press F2 to enter BIOS setup. Log in to the BIOS Setup Utility with your BIOS Administrator password. On the BIOS Setup Utility window, choose the Advanced tab. Choose Trusted Computing to open the TPM Security Device Configuration window. Change TPM SUPPORT to Enabled. Press F10 to save your settings and reboot the server. Step 2 Verify that TPM support is now enabled: Watch during bootup for the F2 prompt, and then press F2 to enter BIOS setup. Log into the BIOS Setup utility with your BIOS Administrator password. Choose the Advanced tab. Choose Trusted Computing to open the TPM Security Device Configuration window. Verify that TPM SUPPORT and TPM State are Enabled. Step 3 Continue with Enabling the Intel TXT Feature in the BIOS. Enabling the Intel TXT Feature in the BIOS Intel Trusted Execution Technology (TXT) provides greater protection for information that is used and stored on the business server. A key aspect of that protection is the provision of an isolated execution environment and associated sections of memory where operations can be conducted on sensitive data, invisibly to the rest of the system. Intel TXT provides for a sealed portion of storage where sensitive data such as encryption keys can be kept, helping to shield them from being compromised during an attack by malicious code. Procedure Step 1 Reboot the server and watch for the prompt to press F2. Step 2 When prompted, press F2