Context-aware micro-segmentation with nsx-t 2.4 – network virtualization 5 gases in the atmosphere


Micro-segmentation has been one of the key reasons why our customers deploy NSX. With Micro-segmentation, NSX enables organizations to implement a zero-trust network security model in their on-premise datacenter as well as in the cloud and beyond. A key component making Micro-segmentation possible is the Distributed electricity usage calculator spreadsheet Firewall, which is deployed at the logical port of every workload allowing the most granular level of enforcement, regardless of the form factor of that workload – Virtual Machine – Container – Bare Metal Server or where that workload resides – On Premise – AWS -Azure – VMC.

In the traditional network-centric approach to security, network and security teams are tasked with determining the appropriate policy and rules after a new application has been developed. This often is a very time consuming, manual and error-prone process involving various review cycles, and results in a complex set of rules based on network constructs such as IP addresses and Ports that are hard to tie to applications. In addition to that initial complexity, network-based security policies are hp gas kushaiguda phone number not conducive to changing applications

Modern day applications are a network of distributed servers, which can consists of Virtual Machines, Containers and sometimes Bare Metal systems, which are all intended to work together. In the traditional network-centric approach to security, VLANs and hairpinning of traffic to hardware-based firewalls are used to provide a certain level of segmentation between different kinds of workloads. This is often used to segment the tiers of applications, but does not prevent lateral communication between workload within a tier, leading to a large lateral attack surface between various applications. Most electricity icon importantly, this model and the lifecycle of associated policies is also not aligned with applications The disconnect between policies and the actual applications these policies should protect leads to explosion in the number of rules providing inadequate and inflexible security. Zero Trust through Context

The NSX-T Distributed Firewall is the key component in enforcing Micro-segmentation. It’s built directly into the hypervisor kernel and provides Layer 2 to Layer 7 stateful filtering, enabling a context-defined and network-independent policy and enforcement at line rate. This enforcement is distributed to the most granular level, with basically a firewall sitting right at the vNic of every virtual machine. All policies are centrally configured either from the UI, through a CMP or using our API.

Because NSX is embedded in the hypervisor, it has rich contextual knowledge of what is taking place with dynamic workloads in both the physical and virtual environments. Instead of grouping and rules based on where something is in the network, we can use constructs based on specific characteristics of that workload, including for example the Operating System or Name of the workload. Through the use of security tags, workload can also be grouped based electricity questions grade 6 on criteria such as the function of the application, the application tier the workload is part of, the security posture, regulatory requirements such as PCI or GDPR or the environment the application is deployed in. With Identity Firewalling, we can also create a policy that limits access to applications based on the Active Directory group a user belongs to, and with Layer 7 Application Identity in NSX-T 2.4, we now also provide customers the ability to define a policy that allows/denies flows from a particular application/protocol to traverse E-W between workloads regardless of the port that is being used.

FQDN whitelisting leverages physics c electricity and magnetism formula sheet the same context-aware architecture that is used for Layer 7 App-ID, in which nearly all packets for a flow are processed in kernel. Furthermore we leverage Distributed DNS Snooping to map domain names to IP addresses. Distributed DNS Snooping is unique to the NSX and take advantage of the unique position of the Distributed Firewall – In kernel, and applied to the logical port of every workload – which enables us to learn about every DNS query and response, regardless of whether it’s going to an external or internal DNS server, without requiring any agent.

In NSX-T 2.4, FQDN gas vs electric heat whitelisting is configured by defining a context profile with one or more pre-canned URLs, and then applying the context profile to a firewall rule. In addition to FQDN, Layer 7 App-ID can also be defined in the same context profile to limit the types of applications/protocols that can access the specified URL/FQDN. Identity Firewall

Besides micro-segmenting applications, many of our customers also leverage NSX to protect their VDI infrastructure and Desktops. NSX provides isolation between desktops, granular access to applications for distinct groups of desktops, and micro-segmentation for the VDI infrastructure. With NSX-T 2.4, we further expand on this with E-W Service Insertion and Guest Introspection, allowing customers to insert additional security controls such as IPS/IDS electricity hair stand up or Agentless Anti-virus into their VDI environment. One other key feature introduced in NSX-T 2.4 is User-based or Identity Firewall (IDFW). With IDFW, customers can create firewall rules based on active directory user groups in order to provide granular per-user access to applications. The Identity Firewall features is based on flow context, and therefore can be applied to both users accessing their apps from VDI Desktops or RDSH sessions. With NSX-T 2.4, IDFW-based electricity cost calculator rules can also use Layer 7 and/or FQDN context-profiles to provide even more granular per-user control.

NSX-T can retrieve User to Group mapping from Active Directory, allowing users to then configure a Group based on one or more AD-Groups. When firewall rules are configured with an AD-based group as the source, the Security Identifier (SID) of that group is programmed in the dataplane of the Distributed Firewall. When a user logs in to a VDI desktop or RDSH host, VMware tools (thin agent) is used to retrieve the user/group information. The Context-engine which is an NSX component running on the hypervisor then programs the group SID to flow mapping into the context table. Finally, the oil n gas prices information about the flow in the context table is matched against SID-based rules in the firewall rule table and the appropriate action is taken.

Identity Firewall is disabled by default, and can be enabled per cluster and/or for standalone hosts. Active Directory needs to be registered with NSX in order for NSX to retrieve group and user information. Once that is done, security administrators can create a group based on one or more AD-groups. This group can then be used as the source of one or more Distributed Firewall rules.