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Virtual Private Cloud — Isolated Network · Free Infrastructure

Your cloud.
Your network.
Completely isolated.

A logically isolated network environment that belongs entirely to you. Define your own IP space, divide into subnets across availability zones, control every traffic flow with ACLs and Security Groups — and pay nothing for the network layer itself.

FreeVPC & Subnets
Multi-AZSubnet coverage
7Network components
5minSetup time
Internet Public Network Internet Gateway VPC · 10.0.0.0/16 AZ — Dubai-1 Public Subnet · 10.0.1.0/24 Web Server NAT Gateway Private Subnet · 10.0.2.0/24 App Server DB MySQL Security Group · deny-all-public AZ — Dubai-2 Public Subnet · 10.0.3.0/24 LB Node Private Subnet · 10.0.4.0/24 App Server DB Replica Security Group · deny-all-public Repl Network ACL · Subnet-level inbound / outbound rules Route Table · custom rules
How It Works

Your private network in four steps

A complete, production-ready VPC network takes under 5 minutes to configure. Start from scratch or adapt the planning guide for enterprise architectures.

1
10.0.0.0/16

Create VPC

Define your private network by choosing a CIDR block. Three segment types freely combinable — adjust the range at any time. One VPC per project, or multiple for environment isolation.

2
10.0.1.0/24

Create Subnets

Divide your VPC into public and private subnets. Subnets can span any availability zone within the region — place public-facing resources in one, backend and database resources in another.

3
VPS · DB · LB

Add Cloud Resources

Launch VPS instances, databases, load balancers, and other services directly into your subnets. All resources inherit the network isolation, routing, and security rules you've defined.

4
NAT · ACL · SG

Configure Security & Routing

Add a NAT Gateway for outbound internet access from private subnets. Bind Network ACLs to control subnet-level traffic. Apply Security Groups to individual instances for fine-grained access control.

Network Components

Seven building blocks. One private network.

Each component is independently configurable. All core components are free — use exactly what your architecture requires.

VPC · 10.0.0.0/16 Web App DB
Free · Core

Virtual Private Cloud

Your logically isolated network environment. Define a custom CIDR block, create subnets, and manage all cloud resources in complete isolation from other tenants.

Public 10.0.1.0/24 AZ-1 + AZ-2 Private 10.0.2.0/24 AZ-1 + AZ-2
Free · Multi-AZ

Subnets

Divide your VPC into public and private segments. A single subnet can span multiple availability zones for built-in disaster recovery — no extra configuration required.

Private 10.0.2.x NAT Gateway Internet + EIP Outbound only · EIP billed
Free · EIP extra

NAT Gateway

Enterprise-level VPC gateway. Private subnet resources initiate outbound internet connections without public IPs. Port forwarding rules let them selectively receive inbound traffic too.

Free · Subnet-level

Network ACL

Subnet-level stateless firewall. Precise inbound and outbound rules for IP ranges, protocols, and ports — the first line of defence before traffic reaches resources.

Free · Instance-level

Security Group

Stateful instance-level firewall. Define allowed inbound/outbound rules per resource — allowed inbound automatically permits the response. Fine-grained per-instance control.

Free · VPC-level

Routing Table

Control network traffic paths for all resources. Multiple routing rules bound to subnets — for VPC peering, dedicated line connections, and internet gateway routing.

Free · Internal

Internal VIP

Floating private IP between resources. Binds to a primary instance and auto-fails over to standby — no DNS delay, no application reconnection, transparent to clients.

Reference Architecture

A production-ready three-tier VPC

Web tier, application tier, and database tier — each isolated in private subnets across two availability zones. The pattern behind the majority of enterprise cloud deployments on NubexCloud.

NUBEXCLOUD REGION · DUBAI 🌐 Internet · Public Users VPC · 10.0.0.0/16 NETWORK ACL · Subnet-level inbound / outbound enforcement WEB / PUBLIC TIER AZ — Dubai-1 · 10.0.1.0/24 Web Server A NAT Gateway AZ — Dubai-2 · 10.0.3.0/24 Web Server B Load Balancer APPLICATION TIER · PRIVATE SUBNETS AZ — Dubai-1 · 10.0.2.0/24 App Server A SG: allow-web-only AZ — Dubai-2 · 10.0.4.0/24 App Server B DATABASE TIER · PRIVATE SUBNETS · NO PUBLIC ROUTING AZ — Dubai-1 · 10.0.5.0/24 DB Primary AZ — Dubai-2 · 10.0.6.0/24 DB Replica Internal VIP float Route Table UDPN / Dedicated Line Repl
Pricing

The network layer is free. Build without budget constraints.

Unlike other cloud providers who charge for VPC endpoints, NAT gateways by the hour, and data transfer within the VPC — NubexCloud's core networking is entirely free. You only pay for the elastic IP that connects your NAT Gateway to the internet.

No hidden networking costs

Core networking included in every NubexCloud account.

VPC, subnets, routing, security groups, ACLs, internal VIP — all of the infrastructure that defines and protects your network is permanently free. There is no minimum commit, no per-AZ charge, and no data transfer fee for traffic that stays inside your VPC.

The only billable component is the Elastic IP (EIP) that you bind to your NAT Gateway when private subnet resources need outbound internet access. EIP pricing is per-hour and per-traffic, visible in the console.

View EIP Pricing →
Virtual Private Cloud (VPC) $0 / month
Subnets (any number) $0 / month
NAT Gateway $0 / month
Network ACL $0 / month
Security Groups $0 / month
Routing Table $0 / month
Internal VIP $0 / month
Elastic IP (EIP) — NAT outbound
Scenarios

Every architecture that needs a private network foundation

VPC is the networking layer underneath every serious cloud deployment — from a two-tier startup app to a globally distributed enterprise platform.

Public · Web Tier Web A Web B Private · App Tier App A App B Private · DB Tier · No public route DB
Multi-tier Apps

Three-tier Application Architecture

Web servers in public subnets, application servers and databases in private subnets. VPC enforces this separation at the network layer — no application-level policy can substitute for proper subnet isolation.

Subnet isolation SG per tier ACL boundary
AZ — Dubai-1 Web A App A DB Primary AZ — Dubai-2 Web B App B DB Replica Repl
Disaster Recovery

Multi-AZ High Availability

Deploy across two availability zones in the same VPC. Load balancer routes to the healthy AZ on failure. Internal VIP floats the database endpoint — no IP change, no application reconnection.

Multi-AZ subnets VIP failover Zero IP change
On-premises Legacy Systems Core DB UDPN / DC NubexCloud VPC Cloud Apps Cloud DB Private backbone · No public internet
Hybrid Cloud

On-premises to Cloud

Connect your data centre to NubexCloud VPC via dedicated line or UDPN backbone. Legacy systems communicate with cloud workloads over the private network as if on the same LAN.

UDPN / VPN Private backbone
NETWORK ACL · Zone enforcement Public Zone Web / API Processing Payment Data Zone Cardholder DB
Compliance

Regulatory & Compliance Architecture

Financial, healthcare, and government deployments require documented network zone isolation. ACLs at subnet boundaries and Security Groups per instance satisfy auditors on first review.

ACL zones Audit-ready
Dev VPC 10.10.0.0/16 Dev Servers Dev DBs Staging VPC 10.20.0.0/16 Staging Production VPC 10.30.0.0/16 Prod Servers Prod DBs Separate CIDR ranges · Zero cross-environment traffic possible
Environment Isolation SaaS Multi-tenant

Dev · Staging · Production Isolation

Run separate VPCs for each environment with distinct CIDR ranges. No accidental cross-environment traffic is possible at the network layer. The same pattern works for SaaS tenant isolation — dedicated subnets with ACL rules that prevent any cross-tenant communication.

VPC per environment Separate CIDR No cross-traffic
Customer Stories

How teams are building with NubexCloud VPC

We migrated our entire three-tier application stack to NubexCloud and built the VPC architecture in under an hour. The subnet isolation and Security Groups replaced months of firewall configuration we maintained on-premises. And the network layer cost us nothing.

Enterprise · Multi-tier
Head of Cloud Infrastructure
Enterprise SaaS platform, UAE
$0
network layer cost

Our PCI compliance required strict network isolation between payment processing and customer-facing API. NubexCloud VPC let us define exact CIDR ranges, apply ACLs at subnet boundaries, and Security Groups per instance. The auditors passed our network segmentation on first review.

Fintech · Compliance
CTO
Payment platform, GCC
1st try
compliance audit pass

We use NubexCloud VPC connected to our on-premises data centre via dedicated line and UDPN. Our legacy systems communicate with cloud workloads over the private backbone as if on the same LAN. Cross-region peering means Dubai and Riyadh share internal services without any public internet exposure.

DevOps · Hybrid Cloud
VP Engineering
Regional infrastructure operator, MENA
100%
private network traffic
FAQ

Common questions about NubexCloud VPC

Start building today

Your private cloud network. Free. Ready in minutes.

VPC, Subnets, Security Groups, NAT Gateway, ACLs, Routing Table, and Internal VIP — all free. Define your network, deploy your resources, and control every traffic flow from day one.

Create VPC Free → Read the Docs