Converge Cloud NAT Gateway maps EIPs and ports to the private IPs and ports of CVM instances, allowing VPC CVMs without public IPs to access and be accessed over the public network.
It provides a rich set of features, including:
- Source Network Address Translation (SNAT)
- Destination Network Address Translation (DNAT)
- Gateway traffic control
- Traffic alarms
- Bandwidth packages
- Anti-DDoS protection
- Automatic disaster recovery
SNAT (Source Network Address Translation)
- SNAT enables multiple CVMs in a VPC to access the public network through the same public IP address.
- A single NAT Gateway supports a maximum forwarding capacity of 5 Gbps.
- You can bind multiple EIPs to the NAT Gateway, allowing CVMs to access the public network through random EIPs.
- To specify a particular EIP for public network access, add it to the SNAT address pool to ensure CVMs only use the designated EIP.
DNAT (Destination Network Address Translation)
- DNAT maps public IP addresses, protocols, and ports to the private IPs, protocols, and ports of CVMs in the VPC.
- This allows services hosted on CVMs to be accessible from the Internet.
Bandwidth Packages
- NAT Gateway can be paired with IP bandwidth packages to share public network bandwidth among multiple IPs.
- After binding EIPs to the NAT Gateway and adding them to bandwidth packages, applications with staggered traffic can effectively reduce bandwidth costs.
Gateway Traffic Control
- Traffic control can be enabled to manage bandwidth from a private IP to the NAT Gateway.
- Provides visual monitoring at the IP-gateway level, helping network operations personnel track traffic patterns.
- Supports IP-level speed limiting to block unhealthy traffic and protect key services.
Traffic Alarm
- Custom traffic alarms can be configured for NAT Gateway metrics.
- Notifications are sent automatically via email or SMS when thresholds are exceeded.
- Monitoring and alarms are free, helping you quickly identify and resolve issues.
Anti-DDoS Protection
- Anti-DDoS Pro defends against DDoS and CC attacks with up to 310 Gbps protection bandwidth.
- You can bind an Anti-DDoS Pro instance to the NAT Gateway to enhance security.
Automatic Disaster Recovery
- NAT Gateway features dual-server hot backup and automatic disaster recovery.
- Services on a failed server are seamlessly switched to the backup server.
- Ensures up to 99.99% availability, maintaining service stability for critical applications.