Follow this workflow to configure NSX networking and security in your SDDC. What to read next Assign NSX Service Roles to Organization MembersGrant users in your organization an NSX service role to allow them to view or configure NSX features in the SDDC. SDDC Network Administration with NSX ManagerYou can use either the NSX Web UI or the VMware Cloud Console Networking & Security tab to manage your SDDC networks. Configure AWS Direct Connect Between Your SDDC and On-Premises Data CenterUse of AWS Direct Connect is optional. If traffic between your on-premises network and your SDDC workloads requires higher speeds and lower latency than you can achieve with a connection over the public Internet, configure VMware Cloud on AWS to use AWS Direct Connect. Configure a VPN Connection Between Your SDDC and On-Premises Data CenterConfigure a VPN to provide a secure connection to your SDDC over the public Internet or AWS Direct Connect. Route-based and policy-based IPsec VPNs are supported. Either type of VPN can connect to the SDDC over the Internet. A route-based VPN can also connect to the SDDC over AWS Direct Connect. Configure Management Gateway Networking and SecurityThe management network and Management Gateway are largely preconfigured in your SDDC, but you'll still need to configure access to management network services like vCenter and HCX and create management gateway firewall rules to allow traffic between the management network and other networks, including your on-premises networks and other SDDC networks. Configure Compute Gateway Networking and SecurityCompute Gateway networking includes a compute network with one or more segments and the DNS, DHCP, and security (gateway firewall and distributed firewall) configurations that manage network traffic for workload VMs. It can also include a layer 2 VPN and extended network that provides a single broadcast domain that spans your on-premises network and your SDDC workload network. Add a Custom Tier-1 Gateway to a VMware Cloud on AWS SDDCEvery new VMware Cloud on AWS SDDC includes a default Tier-1 gateway named the Compute Gateway (CGW). You can create and configure additional custom Tier-1 gateways if you need them. Each Tier-1 gateway sits between the SDDC Tier-0 gateway and an arbitrary number of compute network segments. Enabling and Using IPv6 in SDDC NetworksBeginning with SDDC Version 1.22, you can enable dual-stack (IPv4 and IPv6) networking in a new SDDC. Configure a Multi-Edge SDDC With Traffic GroupsIn the default configuration, your SDDC network has a single edge (T0) router through which all North-South traffic flows. This edge supports the default traffic group, which is not configurable. If you need additional bandwidth for the subset of this traffic routed to SDDC group members, a Direct Connect Gateway attached to an SDDC group, VMware HCX Service Mesh, or to the Connected VPC, you can reconfigure your SDDC to be Multi-Edge by creating traffic groups, each of which creates an additional T0 router. Enable AWS Managed Prefix List Mode for the Connected Amazon VPCAWS Managed Prefix List Mode can simplify route table management in a Multi-Edge SDDC and enable support in any SDDC for custom route tables and route aggregation. Aggregate and Filter Routes to UplinksUse route aggregation and egress filtering to control the set of routes advertised to SDDC network uplinks like Direct Connect, VMware Transit Connect and the Connected VPC. You'll need this in cases where you have to reduce the number of entries in a VPC route table or limit the set of routes that are advertised to uplinks. Working With Inventory GroupsVMware Cloud on AWS network administrators can use NSX inventory objects to define collections of services, groups, context profiles, and virtual machines to use in firewall rules. Managing Workload ConnectionsWorkload VMs on routed segments or HCX extended networks with MON enabled can connect to the Internet by default. NAT rules, Compute Gateway firewall rules, and distributed firewall rules, as well as default routes advertised by a VPN, DX, or VTGW connection all give you fine-grained control over Internet access.