Service overview
Private networking failures are often boundary problems: a route exists but DNS chooses the wrong address, or a permitted connection returns through a different path. Clouvenix scopes AWS VPC connectivity around complete application flows. We assess routing, security controls, name resolution and shared-network ownership, then design or repair the specific path between accounts, services and on-premises dependencies.
When this service is useful
This service is useful when AWS workloads need controlled connectivity to an office, data center, another account or a private service. Typical symptoms include routes that work only in one direction, unclear DNS behavior and network changes that depend on undocumented exceptions. We trace the required application conversations before proposing a network design, making routing and security responsibilities visible to both infrastructure and application teams.
Design and operating decisions
Connectivity topology and address ownership
We compare the required paths with the current account, region and network layout. Address overlap, routing ownership and shared transit dependencies influence the choice of connectivity. The design identifies which team controls each routing decision and avoids treating an established tunnel or attachment as proof that an application can communicate.
DNS, security rules and failure paths
Private connectivity must include name resolution and the permissions around the connection. We review forward and return paths, firewall behavior and security boundaries together. Where resilience is required, the acceptance plan defines an observable failure exercise and the expected routing behavior rather than assuming a second connection guarantees an effective recovery path.
Scope and deliverables
- VPC, subnet and route-table assessment
- Transit Gateway and account-connectivity design
- PrivateLink and endpoint-access planning
- Private DNS and resolver-path validation
- Traffic evidence, diagrams and change runbooks
Delivery approach
1. Trace the complete connection
Identify source identity, destination, protocol, DNS answer and return route. Record network owners and the flows that must remain isolated.
2. Implement the reviewed path
Stage routing, endpoint or DNS changes with access to recovery controls. Validate shared-network dependencies before applying changes to additional accounts.
3. Prove the intended boundary
Run representative allowed and denied connection checks. Document packet or flow evidence and the operator steps for the next connectivity investigation.
Illustrative engagement
An illustrative engagement could connect a private application in AWS to an existing database in a customer data center. We map the application name, source and destination addresses, ports and return route before implementing a pilot. Validation checks name resolution and an application transaction from the intended runtime. A controlled path interruption can then be rehearsed if approved. Evidence records both teams' responsibilities, including any external carrier or firewall dependency that limits recovery.
Acceptance evidence
| Area | Evidence reviewed |
|---|---|
| Reachability | The approved source reaches the target service over the documented private path. |
| Isolation | A selected unapproved source remains blocked without breaking the required return traffic. |
| DNS | Name resolution produces the expected destination from every agreed caller environment. |
Before we start
Provide account and VPC inventories, address ranges, DNS ownership, connectivity diagrams, required application flows and access to the relevant network-control teams.
Planning the scope
Scope depends on sites, accounts, regions, address overlap and the parties controlling firewalls or provider connections. Physical circuits and third-party provisioning can introduce external lead times. Discovery separates customer network preparation, carrier work and application changes from AWS configuration, and identifies the access and maintenance windows needed for meaningful connectivity and failure testing.
Handover and ownership
Handover includes network diagrams, route ownership, approved traffic requirements, DNS dependencies and a troubleshooting sequence. We show operators where to inspect connection state and how to distinguish routing, security and application failures. Any resilience assumptions are recorded with the results of the agreed exercises, giving the customer a practical basis for future changes and incident escalation.
Ongoing operations
After delivery, route changes, new subnets and DNS updates need review against the agreed traffic map. A working connection can still be affected by certificate, firewall or application changes elsewhere. We establish owners for monitoring and escalation, while ongoing network management and response coverage are defined around the customer's operating requirements and dependencies.
Boundaries and support
Overlapping address space, carrier provisioning and third-party firewalls can require additional work. Private connectivity alone does not authorize application access or encrypt every application protocol.
Frequently asked questions
Can you connect separate AWS accounts?
Yes. The design depends on routing scale, ownership, address ranges and service exposure requirements. We compare the appropriate VPC, transit or endpoint pattern for the required flows.
Why does a private endpoint still fail?
We examine endpoint policy, security groups, DNS selection, service permissions and caller routing. A created endpoint is only one part of the complete connection.
Can you include office or datacenter links?
Hybrid connectivity can be scoped with your network and carrier teams. Provisioning lead times, ownership and acceptance checks are identified before implementation.
Discuss this service
Tell us about your environment, the problem you need to solve and the people who will accept the work. Discuss a scoped engagement with Clouvenix.