Cloud VPN Services Questions and Answers for Viva

Answer-1: Cloud VPN is a virtual private network that allows secure communication between cloud infrastructure and on-premises networks over the public internet.

Answer-2: Benefits include secure data transmission,scalable infrastructure connectivity,remote access,and reduced costs compared to physical VPN appliances.

Answer-3: Google Cloud VPN,AWS Site-to-Site VPN,Azure VPN Gateway.

Answer-4: IPSec is the most commonly used protocol for Cloud VPNs.

Answer-5: IPSec (Internet Protocol Security) is a suite of protocols that encrypts and authenticates IP packets for secure VPN communication.

Answer-6: Site-to-site VPN connects two networks,while remote access VPN connects individual users to a network.

Answer-7: Yes,many cloud VPNs support dynamic routing protocols such as BGP (Border Gateway Protocol).

Answer-8: Border Gateway Protocol is a dynamic routing protocol used to exchange routing and reachability information between networks.

Answer-9: A tunnel is an encrypted path used to transmit data securely between endpoints in a VPN.

Answer-10: Internet Key Exchange (IKE) is a protocol used to set up a security association in IPSec.

Answer-11: VPN endpoints are the connection points for the VPN tunnel?typically one on the cloud and one on the on-premises network.

Answer-12: It's a resource representing the on-premises VPN device in an AWS Site-to-Site VPN configuration.

Answer-13: It is the AWS side of a VPN connection used to route traffic to and from AWS resources.

Answer-14: Monitoring tools such as CloudWatch (AWS),Network Watcher (Azure),or logs and alerts in GCP can be used.

Answer-15: Hybrid cloud deployments,secure communications,regulatory compliance,and business continuity.

Answer-16: High availability means having redundant VPN tunnels and gateways to ensure continuous connectivity during failures.

Answer-17: Failover is managed using redundant tunnels and dynamic routing (like BGP) for automatic rerouting of traffic.

Answer-18: A Microsoft Azure service that connects on-premises networks to Azure via Site-to-Site or Point-to-Site VPNs.

Answer-19: A managed VPN service by Google Cloud that connects your on-premises network to Google?s VPC network.

Answer-20: The number varies by provider; AWS supports multiple tunnels per connection,typically two for redundancy.

Answer-21: A VPN that connects individual client machines to the cloud network.

Answer-22: A VPN that connects entire networks (like on-prem to cloud).

Answer-23: Encryption algorithms like AES-256 are commonly used for encrypting data in transit.

Answer-24: A Virtual Private Cloud is an isolated section of the cloud provider?s network where you can deploy cloud resources.

Answer-25: Cloud VPN connects the VPC to other networks via encrypted tunnels.

Answer-26: Yes,some providers like AWS and Azure allow multi-region VPN configurations.

Answer-27: Yes,multi-cloud VPN setups are possible using third-party or open-source VPN solutions.

Answer-28: MTU (Maximum Transmission Unit) affects packet size and performance in VPN tunnels; mismatched MTUs can cause fragmentation.

Answer-29: Tools like ping,traceroute,and vendor-specific monitoring dashboards help test and troubleshoot VPN connectivity.

Answer-30: They use hashing algorithms like SHA-256 to ensure data hasn't been altered during transmission.

Answer-31: Yes,Cloud VPN configurations can be managed using tools like Terraform or CloudFormation.

Answer-32: DPD is used to detect unresponsive VPN peers and close tunnels when necessary.

Answer-33: NAT traversal allows VPN traffic to pass through NAT devices like firewalls or routers.

Answer-34: It?s a secret key shared between two VPN endpoints to establish a secure connection.

Answer-35: If configured with high availability,traffic is rerouted to a backup tunnel; otherwise,connectivity is lost.

Answer-36: VPNs can introduce slight latency due to encryption and tunneling but are generally optimized for performance.

Answer-37: Yes,many enterprises use VPN for backup connectivity alongside Direct Connect (AWS) or ExpressRoute (Azure).

Answer-38: Pricing typically depends on the amount of traffic,duration of connection,and region.

Answer-39: SKU defines the performance and features (like throughput,BGP) of an Azure VPN Gateway.

Answer-40: By using strong encryption,regularly rotating keys,enabling DPD,and monitoring for unauthorized access.

Answer-41: Alternatives include leased lines,MPLS,or cloud-specific networking solutions like AWS Direct Connect.

Answer-42: It refers to limiting bandwidth usage over a VPN connection,which may be done intentionally or due to ISP restrictions.

Answer-43: It is the process of interconnecting two VPN networks so they can exchange traffic.

Answer-44: A firewall can filter VPN traffic and ensure only allowed ports and protocols are used.

Answer-45: Phase 1 establishes a secure channel for negotiating Phase 2,which sets up the actual data tunnel.

Answer-46: GCP provides HA VPN with two interfaces,each capable of creating multiple tunnels for redundancy.

Answer-47: Split tunneling allows sending only specific traffic through the VPN while other traffic uses a direct internet connection.

Answer-48: Yes,VPNs can securely connect on-premises infrastructure with cloud-hosted Kubernetes clusters.

Answer-49: Logs track events like tunnel status,connection attempts,data flow,and errors for auditing and troubleshooting.

Answer-50: Check tunnel status,routing configuration,shared keys,firewall rules,and network reachability on both ends.