VMware NSX is a security platform that enables virtual cloud networking, a software-defined networking approach that spans data center, cloud, and application frameworks.

An ESXi host is a hypervisor that loads VMware software. The NSX solution is designed to remove all manual switch and router configurations. Memory over-commitment and deduplication, memory ballooning, network traffic shaping, network interface card teaming, and more.

For your vSphere environment, NSX Data Center for vSphere offers networking and security technologies like logical switching, logical routing, distributed firewall, load balancer, NAT, and VPN. In addition, the VMware vCenter Server plug-in for NSX Data Center for vSphere is installed.

 VMware NSX Distributed Firewall is a Layer 7 software-defined firewall built to protect multi-cloud traffic across virtualized workloads. It provides a stateful firewall with IDS/IPS, Sandbox, and NTA/NDR delivered as software and distributed to each host.

 NSX Distributed Firewall is a hypervisor kernel-embedded firewall that propagates across VMware ESXi. Network administrators can create custom firewall policies at the virtual network interface card level.

NSX allows you to treat your physical network as a pool of transport capacity, connecting network and security services to your workloads in a policy-driven approach. That automates network operations and eliminates the bottlenecks associated with hardware-based networks.